US4724164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of mirror manufacture and products made thereby
Assignee: FALCONER ACQUISITION Inc A DE CORP
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Filing: 1985-10-29
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Granted: 1988-02-09
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Expires: 2005-10-29
Abstract
Abstract A method for making mirrors and a mirror product, free from black edge and similar adhesion problems, are provided by coating a metal film onto one side of a glass sheet and then heating the glass and film with convection heating to a temperature above 200° F. using hot air.
Inventors
- 👤 Stephen J. Columbare
- 👤 Frank Workens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:44
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08; C; C03; C03C; C03C17/00; C03C17/06; C03C17/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
The method of making mirrors to eliminate black edge or edge creep comprising the steps of: (a) applying "a light reflective nontransmitting" film of at least one metal on one side of a sheet of glass; and (b) heating the metal film and glass substrate "free from applied oxidation agents", to a temperature above 200° F. and to complete dryness by convection heating with high temperature gases flowing across the metal film to provide a metal film which is substantially free from metal removal from the applied film on applying and removing a strip of pressure sensitive tape from the metal surface.
Claim 2
Independent Claim
102 words
The method of making mirrors to eliminate black edge or edge creep comprising the steps of: (a) applying "a light reflective nontransmitting" film of at least one metal on one side of a sheet of glass; and (b) heating the metal film and glass substrate "free from applied oxidation agents", to a temperature above 200° F. and to complete dryness by convection heating with high temperature gases flowing across the metal film to provide a metal film which is substantially free from metal removal from the applied film on applying and removing a strip of pressure sensitive tape from the metal surface.
Claim 3
Dependent Claim
32 words
A method as claimed in claim 1 wherein the metal film is a film of silver having thereon a film of copper on the side of the silver film opposite the glass.
Claim 4
Dependent Claim
32 words
The method as claimed in claim 1 or 2 wherein the glass is first treated with a sensitizing solution of stannous chloride prior to applying the film of at least one metal.
Claim 5
Dependent Claim
19 words
The method as claimed in claim 1 or 2 wherein hot air is forced directly against the metal film.
Claim 6
Dependent Claim
17 words
The method as claimed in claim 3 wherein hot air is forced directly against the metal film.
Claim 7
Dependent Claim
21 words
The method as claimed in claim 1 or 2 wherein the high temperature gases are at a temperature above 350° F.
References Cited (Backward Citations)
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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) | 1991-02-08 | 1991-08-10 | 1992-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-08 | 1995-08-10 | 1996-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-08 | 1999-08-10 | 2000-02-09 | $7700.00 | Window Closed / Lapsed |