US2978366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film removal method
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1957-11-12
•
Granted: 1961-04-04
•
Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Stephen H Harwig
- 👤 Dwight W Barkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:39
CPC Classifications
C; C03; C03C; C03C23/00; H; H01; H01B; H01B1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A METHOD OR REMOVING TRANSPARENT ELECTRICALLY CONDUCTING METAL FILMS FROM TRANSPARENT GLASS WINDOWS WITHOUT IMPAIRING THE OPTICAL PROPERTIES OF THE GLASS WINDOWS, COMPRISING IMMERSING THE TRANSPARENT GLASS WINDOWS IN AN ACIDIC HYDROHALIDE SOLUTION CONTAINING A SALT FROM THE GROUP CONSISTING OF POTASSIUM IODIDE AND CUPRIC CHLORIDE.
Claim 2
Independent Claim
46 words
A METHOD OR REMOVING TRANSPARENT ELECTRICALLY CONDUCTING METAL FILMS FROM TRANSPARENT GLASS WINDOWS WITHOUT IMPAIRING THE OPTICAL PROPERTIES OF THE GLASS WINDOWS, COMPRISING IMMERSING THE TRANSPARENT GLASS WINDOWS IN AN ACIDIC HYDROHALIDE SOLUTION CONTAINING A SALT FROM THE GROUP CONSISTING OF POTASSIUM IODIDE AND CUPRIC CHLORIDE.
References Cited (Backward Citations)
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Cited
US2291202A
Cited
US2536075A
Cited
US2637669A
Cited
US2572576A
Cited
US2726180A
Cited
US2850409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |