US4666264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mirror using transparent synthetic resin plate
Assignee: Marui Industrial Co Ltd
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Filing: 1985-06-11
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Granted: 1987-05-19
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Expires: 2005-06-11
Abstract
Abstract A mirror comprising: a transparent plate of a synthetic resin; a surface-hardening layer (a) coated on an entire surface of the resin plate; a reflective metal layer (b) deposited on the layer (a) of the back of resin, and a back-coat layer (c) closely covering the surface of the reflective film, characterized in that said metal layer is formed by a dry metal plating, said metal being selected from the group consisting of tin or alloy of tin and copper (Sn:Cu=1:less than 0.4 by weight), thickness of layer (b) being in the range of 700-1600 ANGSTROM and moisture permeability of layer (a) being smaller than those of layer (b) and layer (c) is disclosed.
Inventors
- 👤 Taiji Yamabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:12
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08; G02B5/0816; G02B5/085; G02B5/0858; G02B5/0866; B; B60; B60R; B60R1/00; B60R1/02; G02B5/0808; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
A mirror comprising: a transparent plate of synthetic resin; a surface-hardening layer coated on all surfaces of the resin plate; a reflective metal layer deposited on the surface-hardening layer of one side of the resin plate, and a back-coat layer closely covering the surface of the reflective metal layer, wherein said metal layer is formed by a dry metal plating, said metal being selected from the group consisting of tin and an alloy of tin and copper (Sn:Cu=1:less than 0.4 by weight), the thickness of said reflective metal layer being in the range of 700-1600 Å and the moisture permeability of said surface-hardening layer being substantially smaller than those of said reflective metal layer and said back-coat layer.
Claim 2
Dependent Claim
118 words
A mirror comprising: a transparent plate of synthetic resin; a surface-hardening layer coated on all surfaces of the resin plate; a reflective metal layer deposited on the surface-hardening layer of one side of the resin plate, and a back-coat layer closely covering the surface of the reflective metal layer, wherein said metal layer is formed by a dry metal plating, said metal being selected from the group consisting of tin and an alloy of tin and copper (Sn:Cu=1:less than 0.4 by weight), the thickness of said reflective metal layer being in the range of 700-1600 Å and the moisture permeability of said surface-hardening layer being substantially smaller than those of said reflective metal layer and said back-coat layer.
Claim 3
Dependent Claim
10 words
The mirror of claim 1 wherein said metal is tin.
Claim 4
Dependent Claim
18 words
The mirror of claim 1 wherein said metal is an alloy of tin and copper (Sn:Cu=1:less than 0.4).
Claim 5
Dependent Claim
17 words
The mirror of claim 1 wherein said dry metal plating is vacuum metallizing, sputtering or ion plating.
Claim 6
Dependent Claim
12 words
The mirror of claim 1 wherein said synthetic resin is polymethyl methacrylate.
Claim 7
Dependent Claim
17 words
The mirror of claim 1 wherein said surface hardening layer is formed essentially of an organosilicone polymer.
Claim 8
Dependent Claim
25 words
The mirror of claim 1 wherein the front and back surfaces of the resin plate are both flat and are not parallel to each other.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |