US4303729A
Expired / Lapsed
US
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Hollow plastic microspheres
Assignee: Carvellas Perry
•
Filing: 1979-12-12
•
Granted: 1981-12-01
•
Expires: 1999-12-12
Abstract
Abstract Hollow plastic microspheres made from thermoplastic or thermosetting plastic compositions are described. The hollow plastic microspheres can be used as filler materials in plastics, in plastic foam compositions and in concrete and asphalt compositions. The hollow plastic mircospheres can be made from low heat conductivity plastic compositions and blown with a low heat conductivity gas and used to make improved insulation materials and composites and insulating systems. The hollow plastic microspheres can be made to contain a thin transparent or reflective metal coating deposited on the inner wall surface of the microspheres by adding to the blowing gas small dispersed metal particles and/or gases of organo metal compounds and decomposing the organo metal compounds. The hollow plastic microspheres can also be made in the form of filamented plastic microspheres with a thin plastic filament connecting adjacent plastic microspheres.
Inventors
- 👤 Leonard B. Torobin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:35
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/08; B; B01; B01J; B01J13/00; B01J13/02; B01J13/20; B01J13/22; B29; B29C; B29C49/00; B29C49/42; B29C49/46; B29C70/00; B29C70/58; C; C03; C03B; C03B19/00; C03B19/10; C03B19/107; C03B19/1075; C04; C04B; C04B14/00; C04B14/02; C04B14/04; C04B14/22; C04B14/24; C04B20/00; C04B20/10; C04B20/1055; C08; C08J; C08J9/00; C08J9/32; F16L59/06; F16L59/065; F24; F24S; F24S80/00; F24S80/50; F24S80/52; F24S80/525; F24S80/56; B29C2049/4602; B29C2049/465; B29C2049/4655; B29C2049/4664; B29K; B29K2105/00; B29K2105/06; B29K2105/16; B29K2105/165; C03B2203/00; C03B2203/10; C03B2203/14; C03B2203/16; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/26; Y10T428/261; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 59
Claim 1
Independent Claim
69 words
A shaped form or formed mass of cemented or bonded together hollow organic film forming material microspheres having a diameter of 200 to 10,000 microns and having a wall thickness of 0.1 to 1,000 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Claim 2
Dependent Claim
69 words
A shaped form or formed mass of cemented or bonded together hollow organic film forming material microspheres having a diameter of 200 to 10,000 microns and having a wall thickness of 0.1 to 1,000 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Claim 3
Dependent Claim
71 words
A shaped form or formed mass of cemented or bonded together hollow organic film forming material microspheres of substantially uniform diameter of 500 to 6,000 microns and of substantially uniform wall thickness of 0.5 to 400 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Claim 4
Dependent Claim
71 words
A shaped form or formed mass of cemented or bonded together hollow organic film forming material microspheres of substantially uniform diameter of 500 to 6,000 microns and of substantially uniform wall thickness of 0.5 to 400 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Claim 5
Dependent Claim
34 words
The shaped form or formed mass of microspheres of claim 2 wherein the microspheres are cemented together by fusion or sintering or are bonded together with an organic or inorganic bonding agent or adhesive.
Claim 6
Dependent Claim
18 words
The shaped form or formed mass of microspheres of claim 2 wherein the microspheres comprise a filler material.
Claim 7
Dependent Claim
15 words
The microspheres of claim 4 having a contained gas pressure of 15 to 75 p.s.i.a.
Claim 8
Dependent Claim
18 words
The shaped form or formed mass of microspheres of claim 3 formed into a thin sheet or panel.
Claim 9
Dependent Claim
22 words
The microspheres of claim 6 having deposited on the inner wall surfaces thereof a thin metal coating 50° to 5000° A thick.
Claim 10
Dependent Claim
68 words
A shaped form or formed mass of cemented or bonded together filamented, hollow organic film forming material microspheres having a diameter of 200 to 10,000 microns and having a wall thickness of 0.1 to 1000 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 11
Dependent Claim
68 words
A shaped form or formed mass of cemented or bonded together filamented, hollow organic film forming material microspheres having a diameter of 200 to 10,000 microns and having a wall thickness of 0.1 to 1000 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 12
Dependent Claim
68 words
A shaped form or formed mass of cemented or bonded together filamented, hollow organic film forming material microspheres having a diameter of 500 to 6000 microns and having a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 13
Dependent Claim
68 words
A shaped form or formed mass of cemented or bonded together filamented, hollow organic film forming material microspheres having a diameter of 500 to 6000 microns and having a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 14
Dependent Claim
34 words
The shaped form or formed mass of microspheres of claim 9 wherein the microspheres are cemented together by fusion or sintering or are bonded together with an organic or inorganic bonding agent or adhesive.
Claim 15
Dependent Claim
26 words
The microspheres of claim 10 wherein the length of the connecting filaments is substantially equal and is 2 to 30 times the diameter of the microspheres.
Claim 16
Dependent Claim
31 words
The microspheres of claim 10 wherein the length of the connecting filaments is substantially equal and the diameter of the connecting filaments is 1/2500 to 1/20 the diameter of the microspheres.
Claim 17
Dependent Claim
18 words
The shaped form or formed mass of microspheres of claim 9 wherein the microspheres comprise a filler material.
Claim 18
Dependent Claim
18 words
The shaped form or formed mass of microspheres of claim 10 formed into a thin sheet or panel.
Claim 19
Dependent Claim
66 words
A shaped form or formed mass of cemented or bonded together hollow plastic microspheres having a diameter of 200 to 10,000 microns and having a wall thickness of 0.1 to 1,000 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Claim 20
Dependent Claim
66 words
A shaped form or formed mass of cemented or bonded together hollow plastic microspheres having a diameter of 200 to 10,000 microns and having a wall thickness of 0.1 to 1,000 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Claim 21
Dependent Claim
68 words
A shaped form or formed mass of cemented or bonded together hollow plastic microspheres of substantially uniform diameter of 500 to 6,000 microns and of substantially uniform wall thickness of 0.5 to 400 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Claim 22
Dependent Claim
68 words
A shaped form or formed mass of cemented or bonded together hollow plastic microspheres of substantially uniform diameter of 500 to 6,000 microns and of substantially uniform wall thickness of 0.5 to 400 microns, wherein said microspheres are free of latent solid or liquid blowing gas materials or gases and the walls of said microspheres are substantially free of holes, relatively thinned wall portions or sections and bubbles.
Claim 23
Dependent Claim
34 words
The shaped form or formed mass of microspheres of claim 16 wherein the microspheres are cemented together by fusion or sintering or are bonded together with an organic or inorganic bonding agent or adhesive.
Claim 24
Dependent Claim
32 words
The microspheres of claim 17 having a thin metal coating deposited on the inner wall surfaces of the microspheres consisting of a layer of dispersed metal particles 50° to 5000° A thick.
Claim 25
Dependent Claim
22 words
The microspheres of claim 17 having a diameter of 500 to 3000 microns and a wall thickness of 0.5 to 200 microns.
Claim 26
Dependent Claim
17 words
The microspheres of claim 17 having an average bulk density of 0.5 to 12 lb/ft 3 .
Claim 27
Dependent Claim
18 words
The shaped form or formed mass of microspheres of claim 16 wherein the microspheres comprise a filler material.
Claim 28
Dependent Claim
15 words
The microspheres of claim 21 having a contained gas pressure of 15 to 75 p.s.i.a.
Claim 29
Dependent Claim
35 words
The shaped form or formed mass of microspheres of claim 21 wherein the shaped form or formed mass comprises said microspheres and a member selected from the group consisting of plastics, resins, concrete and asphalt.
Claim 30
Dependent Claim
18 words
The shaped form or formed mass of microspheres of claim 17 formed into a thin sheet or panel.
Claim 31
Dependent Claim
22 words
The microspheres of claim 24 having deposited on the inner wall surfaces thereof a thin metal coating 100° to 1000° A thick.
Claim 32
Dependent Claim
21 words
The microspheres of claim 25 wherein the deposited metal is less than 100° A thick and is transparent to visible light.
Claim 33
Dependent Claim
21 words
The microspheres of claim 25 wherein the deposited metal is more than 100° A thick and is reflective of visible light.
Claim 34
Dependent Claim
10 words
The microspheres of claim 24 having an oblate spheroid shape.
Claim 35
Dependent Claim
25 words
The plastic microspheres of claim 24 wherein there is deposited on the inner wall surfaces a thin metal transparent coating 25° to 95° A thick.
Claim 36
Dependent Claim
26 words
The plastic microspheres of claim 24 wherein there is deposited on the inner wall surfaces thereof a thin metal reflective coating 105° to 600° A thick.
Claim 37
Dependent Claim
25 words
The microspheres of claim 24 wherein the microspheres have deposited on the inner wall surfaces thereof a thin metal coating 150° to 250° A thick.
Claim 38
Dependent Claim
25 words
The microspheres of claim 24 wherein the microspheres have deposited on the inner wall surfaces thereof a thin metal coating 150° to 400° A thick.
Claim 39
Dependent Claim
65 words
A shaped form or formed mass of cemented or bonded together filamented, hollow plastic microspheres having a diameter of 200 to 10,000 microns and having a wall thickness of 0.1 to 1000 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 40
Dependent Claim
65 words
A shaped form or formed mass of cemented or bonded together filamented, hollow plastic microspheres having a diameter of 200 to 10,000 microns and having a wall thickness of 0.1 to 1000 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 41
Dependent Claim
65 words
A shaped form or formed mass of cemented or bonded together filamented, hollow plastic microspheres having a diameter of 500 to 6000 microns and having a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 42
Dependent Claim
65 words
A shaped form or formed mass of cemented or bonded together filamented, hollow plastic microspheres having a diameter of 500 to 6000 microns and having a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 43
Dependent Claim
34 words
The shaped form or formed mass of microspheres of claim 34 wherein the microspheres are cemented together by fusion or sintering or are bonded together with an organic or inorganic bonding agent or adhesive.
Claim 44
Dependent Claim
18 words
The shaped form or formed mass of microspheres of claim 34 wherein the microspheres comprise a filler material.
Claim 45
Dependent Claim
15 words
The microspheres of claim 36 having a contained gas pressure of 15 to 75 p.s.i.a.
Claim 46
Dependent Claim
35 words
The shaped form or formed mass of microspheres of claim 36 wherein the shaped form or formed mass comprises said microspheres and a member selected from the group consisting of plastics, resins, concrete and asphalt.
Claim 47
Dependent Claim
18 words
The shaped form or formed mass of microspheres of claim 35 formed into a thin sheet or panel.
Claim 48
Dependent Claim
22 words
The microspheres of claim 39 having deposited on the inner wall surfaces thereof a thin metal coating 50° to 5000° A thick.
Claim 49
Dependent Claim
21 words
The microspheres of claim 40 wherein the deposited metal is less than 100° A thick and is transparent to visible light.
Claim 50
Dependent Claim
21 words
The microspheres of claim 40 wherein the deposited metal is more than 100° A thick and is reflective of visible light.
Claim 51
Dependent Claim
10 words
The microspheres of claim 39 having an oblate spheroid shape.
Claim 52
Dependent Claim
26 words
The microspheres of claim 35 wherein the length of the connecting filaments is substantially equal and is 2 to 20 times the diameter of the microspheres.
Claim 53
Dependent Claim
31 words
The microspheres of claim 35 wherein the length of the connecting filaments is substantially equal and the diameter of the connecting filament is 1/2500 to 1/20 the diameter of the microspheres.
Claim 54
Dependent Claim
72 words
A formed panel comprising a mass of filamented hollow, organic film forming material microspheres and an adhesive binder for said microspheres, said microspheres having a diameter of 500 to 6000 microns and a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 55
Dependent Claim
72 words
A formed panel comprising a mass of filamented hollow, organic film forming material microspheres and an adhesive binder for said microspheres, said microspheres having a diameter of 500 to 6000 microns and a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filament portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 56
Dependent Claim
81 words
A tape comprising a mass of filamented hollow, organic film forming material microspheres, an adhesive binder for said microspheres, a backing for said microspheres and an adhesive for said tape, said microspheres having a diameter of 500 to 6000 microns and a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filamented portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 57
Dependent Claim
81 words
A tape comprising a mass of filamented hollow, organic film forming material microspheres, an adhesive binder for said microspheres, a backing for said microspheres and an adhesive for said tape, said microspheres having a diameter of 500 to 6000 microns and a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filamented portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 58
Dependent Claim
66 words
A composition comprising asphalt and a mass of filamented hollow, organic film forming material microspheres, said microspheres having a diameter of 500 to 6000 microns and a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filamented portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
Claim 59
Dependent Claim
66 words
A composition comprising asphalt and a mass of filamented hollow, organic film forming material microspheres, said microspheres having a diameter of 500 to 6000 microns and a wall thickness of 0.5 to 400 microns, wherein said microspheres are connected to each other by filamented portions which are continuous with the microspheres and are of the same organic film forming material from which the microspheres are made.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-30 | 1985-06-01 | 1985-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-30 | 1989-06-01 | 1989-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-30 | 1993-06-01 | 1993-12-01 | $7700.00 | Window Closed / Lapsed |