US4519909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microporous products
Assignee: Akzona Inc
•
Filing: 1979-11-23
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Granted: 1985-05-28
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Expires: 1999-11-23
Abstract
Abstract Novel microporous polymers in forms ranging from films to blocks and intricate shapes from synthetic thermoplastic polymers, such as, olefinic, condensation, and oxidation polymers, are disclosed. In one embodiment the microporous polymers are characterized by a relatively homogeneous, three-dimensional cellular structure having cells connected by pores of smaller dimension. Also disclosed are microporous polymer products which contain relatively large amounts of functionally useful liquids and behave as solids.
Inventors
- 👤 Anthony J. Castro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:44
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/08; A01N25/10; B; B41; B41N; B41N7/00; C; C08; C08J; C08J9/00; C08J9/28; C09; C09K; C09K3/00; C09K3/14; C09K3/149; C08J2201/00; C08J2201/04; C08J2201/052; C08J2201/054; C08J2201/0542; C08J2201/0543; C08J2201/0545; C08J2201/0546
Claims Analysis
Total Claims: 84
Claim 1
Independent Claim
93 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said pores and said cells being void and said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxidation polymers and blends thereof.
Claim 2
Dependent Claim
93 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said pores and said cells being void and said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxidation polymers and blends thereof.
Claim 3
Dependent Claim
13 words
The polymer structure of claim 1 wherein said polymer is an olefinic polymer.
Claim 4
Dependent Claim
26 words
The polymer structure of claim 2 wherein the ratio of the average cell diameter to the average pore diameter is from about 5:1 to about 40:1.
Claim 5
Dependent Claim
32 words
The polymer structure of claim 3 wherein the average cell diameter is from about 1 to about 20 microns and the average pore diameter is from about 0.05 to about 10 microns.
Claim 6
Dependent Claim
19 words
The polymer structure of claim 4 wherein the average pore size is from about 0.1 to about 1.0 micron.
Claim 7
Dependent Claim
13 words
The polymer structure of claim 5 wherein the polymer is a non-acrylic polyoefin.
Claim 8
Dependent Claim
48 words
The polymer structure of claim 6 wherein the polymer is selected from the group consisting of low density polyethylene, high density polyethylene, polypropylene, polystyrene, polyvinylchloride, acrylonitrile-butadiene-styrene terpolymers, styrene-acrylonitrile copolymers, styrene butadiene copolymers, poly(4-methyl-pentene-1), polybutylene, polyvinylidene chloride, polyvinyl butyral, chlorinated polyethylene, ethylene-vinyl acetate copolymers, polyvinyl acetate and polyvinyl alcohol.
Claim 9
Dependent Claim
13 words
The polymer structure of claim 5 wherein the polymer is an acrylic polyolefin.
Claim 10
Dependent Claim
27 words
The polymer structure of claim 8 wherein the polymer is selected from the group consisting of polymethyl-methacrylate, polymethyl-acrylate, ethylene-acrylic acid copolymers, and ethylene-acrylic acid metal salt copolymers.
Claim 11
Dependent Claim
13 words
The polymer structure of claim 1 wherein the polymer is an oxidation polymer.
Claim 12
Dependent Claim
26 words
The polymer structure of claim 10 wherein the ratio of the average cell diameter to the average pore diameter is from about 5:1 to about 40:1.
Claim 13
Dependent Claim
32 words
The polymer structure of claim 11 wherein the average cell diameter is from about 1 to about 20 microns and the average pore diameter is from about 0.05 to about 10 microns.
Claim 14
Dependent Claim
19 words
The polymer structure of claim 12 wherein the average pore diameter is from about 0.1 to about 1.0 micron.
Claim 15
Dependent Claim
12 words
The polymer structure of claim 13 wherein the polymer is polyphenylene oxide.
Claim 16
Dependent Claim
13 words
The polymer structure of claim 1 wherein said polymer is a condensation polymer.
Claim 17
Dependent Claim
26 words
The polymer structure of claim 15 wherein the ratio of the average cell diameter to the average pore diameter is from about 5:1 to about 40:1.
Claim 18
Dependent Claim
32 words
The polymer structure of claim 16 wherein the average cell diameter is from about 1 to about 20 microns and the average pore diameter is from about 0.05 to about 10 microns.
Claim 19
Dependent Claim
19 words
The polymer structure of claim 17 wherein the average pore diameter is from about 0.1 to about 1.0 microns.
Claim 20
Dependent Claim
31 words
The polymer structure of claim 18 wherein the polymer is selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate, Nylon 6, Nylon 11, Nylon 13, Nylon 66, polycarbonates and polysulfone.
Claim 21
Dependent Claim
13 words
The polymer structure of claim 1 wherein the polymer is a non-acrylic polyolefin.
Claim 22
Dependent Claim
48 words
The polymer structure of claim 1 wherein the polymer is selected from the group consisting of low density polyethylene, high density polyethylene, polypropylene, polystyrene, polyvinylchloride, acrylonitrile-butadiene-styrene terpolymers, styrene-acrylonitrile copolymers, styrene butadiene copolymers, poly(4-methyl-pentene-1), polybutylene, polyvinylidene chloride, polyvinyl butyral, chlorinated polyethylene, ethylene-vinyl acetate copolymers, polyvinyl acetate and polyvinyl alcohol.
Claim 23
Dependent Claim
13 words
The polymer structure of claim 1 wherein the polymer is an acrylic polyolefin.
Claim 24
Dependent Claim
27 words
The polymer structure of claim 1 wherein the polymer is selected from the group consisting of polymethyl-methacrylate, polymethyl-acrylate, ethylene-acrylic acid copolymers, and ethylene-acrylic acid metal salt copolymers.
Claim 25
Dependent Claim
12 words
The polymer structure of claim 1 wherein the polymer is polyphenylene oxide.
Claim 26
Dependent Claim
31 words
The polymer structure of claim 1 wherein the polymer is selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate, Nylon 6, Nylon 11, Nylon 13, Nylon 66, polycarbonates and polysulfone.
Claim 27
Dependent Claim
24 words
The polymer structures of claim 1 wherein said structure is in the form of a block having a thickness up to about 21/2 inches.
Claim 28
Dependent Claim
14 words
The polymer structure of claim 1 wherein said structure has an essentially non-cellular skin.
Claim 29
Dependent Claim
17 words
The polymer structure of claim 27 wherein said skin is relatively impervious to the passage of liquid.
Claim 30
Dependent Claim
16 words
The polymer structure of claim 1 wherein said structure is in the form of a film.
Claim 31
Dependent Claim
59 words
A microporous cellular polymer structure comprising a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxidation polymers, and blends thereof characterized by a C/P ratio of from about 2 to about 200, an S value of from about 1 to about 30, and an average cell size from about 0.5 to about 100 microns.
Claim 32
Dependent Claim
59 words
A microporous cellular polymer structure comprising a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxidation polymers, and blends thereof characterized by a C/P ratio of from about 2 to about 200, an S value of from about 1 to about 30, and an average cell size from about 0.5 to about 100 microns.
Claim 33
Dependent Claim
47 words
The polymer structure of claim 30 wherein the polymer is selected from the group consisting of low density polyethylene, high density polyethylene, polypropylene, polystyrene, polyvinylchloride, acrylonitrile-butadiene-styrene terpolymers, styrene-acrylonitrile copolymers, styrene-butadiene copolymers, poly(4-methyl-pentene-1), polybutylene, polyvinylidene chloride, polyvinyl butyral, chlorinated polyethylene, ethylene-vinyl acetate copolymers, polyvinyl acetate and polyvinyl alcohol.
Claim 34
Dependent Claim
27 words
The polymer structure of claim 30 wherein the polymer is selected from the group consisting of polymethyl-methacrylate, polymethyl-acrylate, ethylene-acrylic acid copolymers, and ethylene-acrylic acid metal salt copolymers.
Claim 35
Dependent Claim
11 words
The polymer of claim 30 wherein the polymer is polyphenylene oxide.
Claim 36
Dependent Claim
31 words
The polymer structure of claim 30 wherein the polymer is selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate, Nylon 6, Nylon 11, Nylon 13, Nylon 66, polycarbonates and polysulfone.
Claim 37
Dependent Claim
40 words
The polymer structure of claim 30 wherein the C/P ratio is from about 5 to about 40, the S value is from about 2 to about 10, and the average cell size is from about 1 to about 20 microns.
Claim 38
Dependent Claim
49 words
A microporous cellular structure comprising a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxidation polymers and blends thereof characterized by a log C/P value of from about 0.2 to about 2.4 and a log S/C value of from about -1.4 to about 1.0.
Claim 39
Dependent Claim
49 words
A microporous cellular structure comprising a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxidation polymers and blends thereof characterized by a log C/P value of from about 0.2 to about 2.4 and a log S/C value of from about -1.4 to about 1.0.
Claim 40
Dependent Claim
45 words
The polymer structure of claim 36 wherein the polymer is selected from the group consisting of low density polyethylene, polypropylene, polystyrene, polyvinylchloride, acrylonitrile-butadiene-styrene terpolymers, styrene-acrylonitrile copolymers, styrene butadiene copolymers, poly(4-methyl-pentene-1), polybutylene, polyvinylidene chloride, polyvinyl butyral, chlorinated polyethylene, ethylene-vinyl acetate copolymers, polyvinyl acetate and polyvinyl alcohol.
Claim 41
Dependent Claim
27 words
The polymer structure of claim 36 wherein the polymer is selected from the group consisting of polymethyl-methacrylate, polymethyl-acrylate, ethylene-acrylic acid copolymers and ethylene-acrylic acid metal salt copolymers.
Claim 42
Dependent Claim
12 words
The polymer structure of claim 36 wherein the polymer is polyphenylene oxide.
Claim 43
Dependent Claim
31 words
The polymer structure of claim 36 wherein the polymer is selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate, Nylon 6, Nylon 11, Nylon 13, Nylon 66, polycarbonates and polysulfone.
Claim 44
Dependent Claim
30 words
The polymer structure of claim 36 wherein the log C/P value is from about 0.6 to about 2.2 and the log S/C value is from about -0.6 to about 0.4.
Claim 45
Dependent Claim
48 words
An isotropic microporous polymer structure comprising a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, oxidation polymers, and blends thereof characterized by an average pore diameter of from about 0.1 to about 5 microns and an S value of from about 1 to about 10.
Claim 46
Dependent Claim
48 words
An isotropic microporous polymer structure comprising a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, oxidation polymers, and blends thereof characterized by an average pore diameter of from about 0.1 to about 5 microns and an S value of from about 1 to about 10.
Claim 47
Dependent Claim
48 words
The polymer structure of claim 42 wherein the polymer is selected from the group consisting of low density polyethylene, high density polyethylene, polypropylene, polystyrene, polyvinylchloride, acrylonitrile-butadiene-styrene terpolymers, styrene-acrylonitrile copolymers, styrene butadiene copolymers, poly(4-methyl-pentene-1), polybutylene, polyvinylidene chloride polyvinyl butyral, chlorinated polyethylene, ethylenevinyl acetate copolymers, polyvinyl acetate and polyvinyl alcohol.
Claim 48
Dependent Claim
27 words
The polymer structure of claim 42 wherein the polymer is selected from the group consisting of polymethyl-methacrylate, polymethyl-acrylate, ethylene-acrylic acid copolymers, and ethylene-acrylic acid metal salt copolymers.
Claim 49
Dependent Claim
12 words
The polymer structure of claim 42 wherein the polymer is polyphenylene oxide.
Claim 50
Dependent Claim
30 words
The polymer structure of claim 42 wherein the average pore diameter is from about 0.2 to about 1 micron and the S value is from about 5 to about 10.
Claim 51
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid lubricant.
Claim 52
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid lubricant.
Claim 53
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid surfactant.
Claim 54
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid surfactant.
Claim 55
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid slip agent.
Claim 56
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid slip agent.
Claim 57
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid moth repellant.
Claim 58
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid moth repellant.
Claim 59
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid pesticide.
Claim 60
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid pesticide.
Claim 61
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid plasticizer.
Claim 62
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid plasticizer.
Claim 63
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid medicinal.
Claim 64
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid medicinal.
Claim 65
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid fuel additive.
Claim 66
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid fuel additive.
Claim 67
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid polishing agent.
Claim 68
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid polishing agent.
Claim 69
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid insect repellant.
Claim 70
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid insect repellant.
Claim 71
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid animal repellant.
Claim 72
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid animal repellant.
Claim 73
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid fragrance.
Claim 74
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid fragrance.
Claim 75
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid flame retardant.
Claim 76
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid flame retardant.
Claim 77
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid antioxidant.
Claim 78
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid antioxidant.
Claim 79
Dependent Claim
100 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid odor masking agent.
Claim 80
Dependent Claim
100 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid odor masking agent.
Claim 81
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid antifogging agent.
Claim 82
Dependent Claim
99 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid antifogging agent.
Claim 83
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid perfume.
Claim 84
Dependent Claim
98 words
A relatively homogeneous, three-dimensional, microporous cellular polymer structure comprising a plurality of substantially spherical cells having an average diameter from about 0.5 to about 100 microns, distributed substantially uniformly throughout the structure, adjacent cells being interconnected by pores smaller in diameter than said microcells, the ratio of the average cell diameter to the average pore diameter being from about 2:1 to about 200:1, said polymer being a synthetic thermoplastic polymer selected from the group consisting of olefinic polymers, condensation polymers, oxipolymers and blends thereof, and said cells and pores being at least partially filled with a liquid perfume.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |