US4797308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simulated mother-of-pearl
Assignee: BASF Catalysts LLC
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Filing: 1987-07-06
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Granted: 1989-01-10
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Expires: 2007-07-06
Abstract
Abstract An iridescent lustrous composite which can simulate the appearance of mother-of-pearl comprises a substrate comprising a transparent or translucent plastic which has been pigmented with a metal oxide coated mica pigment and the substrate carries on at least one of its surfaces a transparent thermoplastic resinous laminate film of at least ten very thin and generally parallel layers of transparent thermoplastic resinous materials, the contiguous layers differing in refractive index by at least about 0.03 and in which the layer at each external surface of the laminate film has a thickness which is greater than the thickness of any one of the multiple very thin layers.
Inventors
- 👤 Harry E. Mattin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:45
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/02; B32B7/023; B32B27/00; B32B27/18; B32B27/20; B32B27/06; B32B27/08; B32B27/36; B44; B44F; B44F9/00; B44F9/08; B32B2250/00; B32B2250/05; B32B2307/00; B32B2307/40; B32B2307/406; B32B2307/409; B32B2307/418; B32B2367/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2911
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
100 words
An irridescent, lustrous composite consisting of a transparent or translucent thermoplsastic resin pigmented with 0.5-10% of a metal oxide-coated mica pigment, said substrate carrying on at least one surface thereof a transparent thermoplastic resinous laminate film of at least 70 very thin and generally parallel layers of transparent thermoplastic resinous materials, the contiguous layers differing in refractive index by at least about 0.06, and in which the layer at each external surface has a thickness which is greater than the thickness of any one of said very thin layers and at least 5% of the total thickness of the film.
Claim 2
Dependent Claim
100 words
An irridescent, lustrous composite consisting of a transparent or translucent thermoplsastic resin pigmented with 0.5-10% of a metal oxide-coated mica pigment, said substrate carrying on at least one surface thereof a transparent thermoplastic resinous laminate film of at least 70 very thin and generally parallel layers of transparent thermoplastic resinous materials, the contiguous layers differing in refractive index by at least about 0.06, and in which the layer at each external surface has a thickness which is greater than the thickness of any one of said very thin layers and at least 5% of the total thickness of the film.
Claim 3
Dependent Claim
13 words
The composite of claim 1, in which the pigment is titanium dioxide-coated mica.
Claim 4
Dependent Claim
13 words
The composite of claim 1, in which the pigment is ferric oxide-coated mica.
Claim 5
Dependent Claim
32 words
The composite of claim 1, in which a plurality of the layers of said film is a terephthalate polyester or copolyester resin having a refractive index of 1.55 to 1.61 or polystyrene.
Claim 6
Dependent Claim
40 words
The composite of claim 1, in which the substrate thermoplastic resin is polyvinyl chloride, the internal layers of the film are alternating layers of polystyrene and ethylene vinyl acetate and the film layer at each external surface is polyvinyl chloride.
Claim 7
Dependent Claim
26 words
The composite of claim 1, wherein the thermoplastic resin of the substrate and of the external surface of the film are heat laminatable without intervening adhesive.
Claim 8
Dependent Claim
13 words
The composite of claim 1, in which the substrate exhibits a variegated luster.
Claim 9
Dependent Claim
24 words
The composite of claim 4 in which the thermoplastic resin of the substrate and of the external surface of the film are the same.
Claim 10
Dependent Claim
26 words
The composite of claim 8, in which the substrate thermoplastic resin is polymethyl methacrylate and said film comprises alternate layers of polybutylene terephthalate and polymethyl methacrylate.
Claim 11
Dependent Claim
46 words
The composite of claim 4, in which the substrate thermoplastic resin is cellulose acetate, the internal layers of the film are alternating layers of glycol-modified polyethylene terephthalate and polymethyl methacrylate and the layer at the external surface contains a mixture of polymethyl methacrylate and acrylic resin.
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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) | 1992-01-10 | 1992-07-11 | 1993-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-10 | 1996-07-11 | 1997-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-10 | 2000-07-11 | 2001-01-10 | $7700.00 | Window Closed / Lapsed |