Patent US4957787A successfully refreshed from Google Patents.
US4957787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial flower
Assignee: PPG Industries Inc
•
Filing: 1988-09-27
•
Granted: 1990-09-18
•
Expires: 2008-09-27
Abstract
Abstract An artificial flower comprises at least one petal of microporous material which comprises a matrix consisting essentially of linear ultrahigh molecular weight polyolefin, a large proportion of finely divided water-insoluble siliceous filler, and interconnecting pores, and which microporous material has regions of stretch-induced molecularly oriented polymer in the matrix.
Inventors
- 👤 Linda P. Reinhardt
- 👤 W. Brent Burleson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:23
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/28; A; A01; A01N; A01N25/00; A01N25/18; A41; A41G; A41G1/00; A41G1/001; A41G1/006; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/042; B; B29; B29C; B29C55/00; B29C55/005; B29K; B29K2105/00; B29K2105/04; C08J2201/00; C08J2201/04; C08J2201/054; C08J2201/0542; C08J2201/0543; C08J2201/0545; C08J2201/0546; C08J2323/00; C08J2323/02; Y; Y10; Y10S; Y10S428/00; Y10S428/905; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/24901
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
141 words
In an artificial flower comprising at least one artificial petal, the improvement wherein said artificial petal comprises microporous material which comprises: (a) a matrix consisting essentially of essentially linear ultrahigh molecular weight polyolefin which is essentially linear ultrahigh molecular weight polyethylene having an intrinsic viscosity of at least about 18 deciliters/gram, essentially linear ultrahigh molecular weight polypropylene having an intrinsic viscosity of at least about 6 deciliters/gram, or a mixture thereof; said matrix comprising regions of stretch-induced molecularly oriented ultrahigh molecular weight polyolefin distributed throughout said matrix, (b) finely divided particulate substantially water-insoluble siliceous filler distributed throughout said matrix, said filler constituting from about 50 percent to about 90 percent by weight of said microporous material, and (c) a network of interconnecting pores communicating throughout said microporous material, said pores constituting more than 80 percent by volume of said microporous material.
Claim 2
Dependent Claim
141 words
In an artificial flower comprising at least one artificial petal, the improvement wherein said artificial petal comprises microporous material which comprises: (a) a matrix consisting essentially of essentially linear ultrahigh molecular weight polyolefin which is essentially linear ultrahigh molecular weight polyethylene having an intrinsic viscosity of at least about 18 deciliters/gram, essentially linear ultrahigh molecular weight polypropylene having an intrinsic viscosity of at least about 6 deciliters/gram, or a mixture thereof; said matrix comprising regions of stretch-induced molecularly oriented ultrahigh molecular weight polyolefin distributed throughout said matrix, (b) finely divided particulate substantially water-insoluble siliceous filler distributed throughout said matrix, said filler constituting from about 50 percent to about 90 percent by weight of said microporous material, and (c) a network of interconnecting pores communicating throughout said microporous material, said pores constituting more than 80 percent by volume of said microporous material.
Claim 3
Dependent Claim
31 words
The artificial flower of claim 1 wherein said essentially linear ultrahigh molecular weight polyolefin is essentially linear ultrahigh molecular weight polyethylene having an intrinsic viscosity of at least about 18 deciliters/gram.
Claim 4
Dependent Claim
15 words
The artificial flower of claim 2 wherein high density polyethylene is present in said matrix.
Claim 5
Dependent Claim
27 words
The artificial flower of claim 2 wherein said ultrahigh molecular weight polyethylene has an intrinsic viscosity in the range of from about 18 to about 39 deciliters/gram.
Claim 6
Dependent Claim
24 words
The artificial flower of claim 2 wherein said filler constitutes from about 50 percent to about 85 percent by weight of said microporous material.
Claim 7
Dependent Claim
11 words
The artificial flower of claim 2 wherein said filler is silica.
Claim 8
Dependent Claim
13 words
The artificial flower of claim 2 wherein said inorganic filler is precipitated silica.
Claim 9
Dependent Claim
22 words
The artificial flower of claim 7 wherein said precipitated silica has an average ultimate particle size of less than about 0.1 micrometer.
Claim 10
Dependent Claim
31 words
The artificial flower of claim 2 wherein the volume average diameter of said pores as determined by mercury porosimetry is in the range of from about 0.6 to about 50 micrometers.
Claim 11
Dependent Claim
24 words
The artificial flower of claim 2 wherein said pores constitute from about 85 percent to about 95 percent by volume of said microporous material.
Claim 12
Dependent Claim
24 words
The artificial flower of claim 2 wherein said microporous material has a thickness in the range of from about 0.03 to about 0.25 millimeter.
Claim 13
Dependent Claim
17 words
The artificial flower of claim 11 which exhibits high degrees of suppleness and softness to the touch.
Claim 14
Dependent Claim
19 words
The artificial flower of claim 12 wherein all artificial petals of said artificial flower are of said microporous material.
Claim 15
Dependent Claim
11 words
The artificial flower of claim 2 wherein said petal contains colorant.
Claim 16
Dependent Claim
11 words
The artificial flower of claim 2 wherein said petal contains perfume.
Claim 17
Dependent Claim
11 words
The artificial flower of claim 1 wherein said petal contains colorant.
Claim 18
Dependent Claim
11 words
The artificial flower of claim 1 wherein said petal contains perfume.
Claim 19
Dependent Claim
12 words
The artificial flower of claim 1 wherein said petal has been printed.
Claim 20
Dependent Claim
164 words
An artificial flower comprising at least one artificial petal of microporous material exhibiting high degrees of suppleness and softness to the touch and having a thickness in the range of from about 0.03 to about 0.25 millimeter, said microporous material comprising: (a) a matrix consisting essentially of essentially linear ultrahigh molecular weight polyethylene having an intrinsic viscosity of at least about 18 deciliters/gram, said matrix comprising regions of stretch-induced molecularly oriented ultrahigh molecular weight polyethylene distributed throughout said matrix, (b) finely divided particlulate precipitated silica having an average ultimate particle size of less than about 0.1 micrometer distributed throughout said matrix, said precipitated silica constituting from about 50 to about 90 percent by weight of said microporous material, and (c) a network of interconnecting pores having a volume average diameter as determined by mercury porosimetry in the range of from about 0.6 to about 50 micrometers communicating throughout said microporous material, said pores constituting more than 80 percent by volume of said microporous material.
Claim 21
Dependent Claim
164 words
An artificial flower comprising at least one artificial petal of microporous material exhibiting high degrees of suppleness and softness to the touch and having a thickness in the range of from about 0.03 to about 0.25 millimeter, said microporous material comprising: (a) a matrix consisting essentially of essentially linear ultrahigh molecular weight polyethylene having an intrinsic viscosity of at least about 18 deciliters/gram, said matrix comprising regions of stretch-induced molecularly oriented ultrahigh molecular weight polyethylene distributed throughout said matrix, (b) finely divided particlulate precipitated silica having an average ultimate particle size of less than about 0.1 micrometer distributed throughout said matrix, said precipitated silica constituting from about 50 to about 90 percent by weight of said microporous material, and (c) a network of interconnecting pores having a volume average diameter as determined by mercury porosimetry in the range of from about 0.6 to about 50 micrometers communicating throughout said microporous material, said pores constituting more than 80 percent by volume of said microporous material.
Claim 22
Dependent Claim
11 words
The artificial flower of claim 19 wherein said petal contains colorant.
Claim 23
Dependent Claim
11 words
The artificial flower of claim 19 wherein said petal contains perfume.
Claim 24
Dependent Claim
17 words
The artificial flower of claim 1 which is an artificial carnation comprising petals of said microporous material.
Claim 25
Dependent Claim
11 words
The artificial flower of claim 22 wherein said petals contain colorant.
Claim 26
Dependent Claim
11 words
The artificial flower of claim 22 wherein said petals contain perfume.
Claim 27
Dependent Claim
17 words
The artificial flower of claim 1 which is an artificial rose comprising petals of said microporous material.
Claim 28
Dependent Claim
11 words
The artificial flower of claim 25 wherein said petals contain colorant.
Claim 29
Dependent Claim
11 words
The artificial flower of claim 25 wherein said petals contain perfume.
References Cited (Backward Citations)
US2823421A
Cited
US2940830A
Cited
US3137610A
Cited
US3351495A
Cited
US3775227A
Cited
US4600146A
Cited
US4734229A
Cited
DE3545615A1
Cited
GB2169129A
Cited
EP0191615A2
Cited
US4681750A
Cited
JPS62227932A
Cited
US4833172A
Cited
US4861644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-17 | 1994-03-19 | 1994-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-17 | 1998-03-19 | 1998-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-17 | 2002-03-19 | 2002-09-18 | $7700.00 | Window Closed / Lapsed |