US4255214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of manufacturing and protecting mirrors
Assignee: FALCONER ACQUISITION Inc A DE CORP
•
Filing: 1977-11-21
•
Granted: 1981-03-10
•
Expires: 1997-11-21
Abstract
Abstract A method is provided for protecting silver and copper coated mirrors against oxidation and corrosion by passivating the metallic coating prior to applying a protective organic coating. The silver and copper can be passivated by applying an effective amount of tolyltriazole to the metal surfaces by spraying, wiping, flooding or the like.
Inventors
- 👤 Frank M. Workens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:49
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/38; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; G02B1/105; G; G02; G02B; G02B1/00; G02B1/10; G02B1/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
57 words
The method of treating mirrors having at least one metal layer selected from the group consisting of copper and silver and combinations thereof comprising the steps of, (a) applying to a freshly exposed surface of said metal layer a solution consisting essentially of at least about 0.25% tolyltriazole in a liquid solvent, and (b) drying said surface.
Claim 2
Independent Claim
57 words
The method of treating mirrors having at least one metal layer selected from the group consisting of copper and silver and combinations thereof comprising the steps of, (a) applying to a freshly exposed surface of said metal layer a solution consisting essentially of at least about 0.25% tolyltriazole in a liquid solvent, and (b) drying said surface.
Claim 3
Independent Claim
56 words
The method of treating mirrors having at least one metal layer from the group consisting of copper and silver and combinations thereof comprising the steps of, (a) applying to a freshly exposed metal coating an organic paint coating containing about 0.25% to 1% tolyltriazole, and (b) drying said surface to form a protective paint film thereover.
Claim 4
Independent Claim
56 words
The method of treating mirrors having at least one metal layer from the group consisting of copper and silver and combinations thereof comprising the steps of, (a) applying to a freshly exposed metal coating an organic paint coating containing about 0.25% to 1% tolyltriazole, and (b) drying said surface to form a protective paint film thereover.
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) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |