US3069289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective backing for mirrors
Assignee: Turner Manufacturing Co
•
Filing: 1960-03-21
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Granted: 1962-12-18
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Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 William C Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:18
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
IN A PROCESS OF CAOATING A FRESHLY SILVERED MIRROR SURFACE WITH A PROTECTIVE COATING OF COPPER BY JOINTLY APPLYING TO SAID SILVER SURFACE AN AQEOUS SOLUTION OF COPPER SULFATE AND SULFURIC ACID AND AN AQUEOUS SUSPENSION OF FINELY DIVIDED PARTICLES OF IRON, THE IMPROVEMENT WHICH COMPRISES INCORPORATING BENTONITE IN SAID SUSPENSION.
Claim 2
Dependent Claim
51 words
IN A PROCESS OF CAOATING A FRESHLY SILVERED MIRROR SURFACE WITH A PROTECTIVE COATING OF COPPER BY JOINTLY APPLYING TO SAID SILVER SURFACE AN AQEOUS SOLUTION OF COPPER SULFATE AND SULFURIC ACID AND AN AQUEOUS SUSPENSION OF FINELY DIVIDED PARTICLES OF IRON, THE IMPROVEMENT WHICH COMPRISES INCORPORATING BENTONITE IN SAID SUSPENSION.
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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |