US2695247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of transparent electroconductive article
Assignee: PPG Industries Inc
•
Filing: 1952-03-05
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Granted: 1954-11-23
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Expires: 1972-03-05
Abstract
No abstract record available.
Inventors
- 👤 Albert E Junge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:12
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C17/253; H; H01; H01B; H01B1/00; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/211; C03C2217/24; C03C2218/00; C03C2218/10; C03C2218/11
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
A METHOD OF PREPARING A TRANSPARENT ELECTROCONDUCTIVE ARTICLE WHICH COMPRISES HEATING A LIME-SODA-SILICA GLASS BASE TO A TEMPERATURE ABOVE ABOUT 500* F., BUT BELOW THE TEMPERATURE AT WHICH THE GLASS BECOMES MOLTEN, CONTACTING THE HEATED BASE WITH HYDROFLUOSILICIC ACID AND THEREAFTER CONTACTING THE GLASS BASE WITH A DECOMPOSABLE TIN COMPOUND WHILE THE BASE IS AT A TEMPERATURE OF FROM 500 TO 1250* F.
References Cited (Backward Citations)
GB596346A
Cited
US2566346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |