US4364637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly reflective plastic reflector with crystalline inorganic film coating
Assignee: NHK Spring Co Ltd
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Filing: 1979-06-13
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Granted: 1982-12-21
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Expires: 1999-06-13
Abstract
Abstract The present invention relates to a plastic reflector having high reflective properties and the method of preparing the same. The reflector is obtained by disposing a reflective film in which a light-reflective metal is coated by a vacuum coating method on one or all sides of a molded body made of polymeric materials or the derivative thereof and further by disposing a light-transmissible coated film in which an inorganic substance selected from metallic oxides and oxides of amphoteric elements or a derivative thereof is vacuum coated on the reflective film.
Inventors
- 👤 Akira Ohno
- 👤 Shitomi Katayama
- 👤 Susumu Senaha
- 👤 Suizo Kyo
- 👤 Akira Akagami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:32
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08; G02B5/0816; G02B5/085; G02B5/0858
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
75 words
A reflector comprising a light-reflecting metallic film vacuum coated on one or more sides of a molded body of polymeric material or a composite thereof, with the surface of said body formed of a thermosetting resin devoid of volatile components, and a light-transmissible crystalline film of an inorganic material selected from the group consisting of a metal oxide, an oxide of an amphoteric element and a mixture thereof vacuum coated on said light-reflecting metallic film.
Claim 2
Dependent Claim
75 words
A reflector comprising a light-reflecting metallic film vacuum coated on one or more sides of a molded body of polymeric material or a composite thereof, with the surface of said body formed of a thermosetting resin devoid of volatile components, and a light-transmissible crystalline film of an inorganic material selected from the group consisting of a metal oxide, an oxide of an amphoteric element and a mixture thereof vacuum coated on said light-reflecting metallic film.
Claim 3
Dependent Claim
54 words
The reflector as set forth in claim 1, in which said polymeric material is selected from the group consisting of a volatile matter-free thermosetting resin and a mixture thereof, with one or more of a reinforcing filler, a flame retardant and a self fire-extinguishing agent, which are free of volatile components under a vacuum.
Claim 4
Dependent Claim
54 words
The reflector as set forth in claim 2, wherein said thermosetting resin is a polycarbonate resin, a polyester resin, a phenol resin, a urea resin, a furfural resin, an allyl resin, an epoxy resin, a silicone resin, a borosilicone resin and a carbosilicone resin; and said reinforcing filler is glass fiber, mica, or asbestos.
Claim 5
Dependent Claim
61 words
The reflector as set forth in claim 1, in which said light-reflecting metallic film is a film of a colorless light-reflecting metal selected from the group consisting of aluminum, silver, chromium, nickel, platinum and alloys thereof; a colored light-reflective metal or metallic compound selected from the group consisting of copper, gold, alloys thereof and nitrides thereof, brass, and nitrides of titanium.
Claim 6
Dependent Claim
39 words
The reflector as set forth in claim 1, in which said metal oxide is a crystallized quartz; a metal oxide ceramic selected from the group consisting of magnesia, alumina, and zirconia; spinel; a cordierite ceramic; or a lithia ceramic.
Claim 7
Dependent Claim
37 words
The reflector as set forth in claim 1, wherein the thickness of the light-reflecting metal film is several thousand Angstroms to 1 micron and the thickness of the light-transmissible film is several thousand Angstroms to 4 microns.
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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) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |