US Patent No: 4,797,308
Number of patents in Portfolio can not be more than 2000
Simulated mother-of-pearl
Stats
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Jan 10, 1989
Issued date -
Jul 6, 1987
filing date -
07/070,051
serial no -
Expired
status
Importance
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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.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,205,997 Powdery pearlescent pigment compositions | 19 | 1978 | |
| 4,720,438 Molded clay article coated with pearl pigment | 8 | 1986 | |
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| 4,499,143 Multilayer automative paint system | 38 | 1983 | |
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| 4,457,540 Multicolor printed product containing pearl luster pigment | 10 | 1981 | |
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| 4,309,480 Iron blue nacreous pigments | 18 | 1980 | |
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| RE31780 Multilayer light-reflecting film | 51 | 1983 | |