Patent US2694649A successfully refreshed from Google Patents.
US2694649A
Expired / Lapsed
US
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Indium oxide coating on a silicious base
Assignee: PPG Industries Inc
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Filing: 1949-07-02
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Granted: 1954-11-16
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Expires: 1969-07-02
Abstract
No abstract record available.
Inventors
- 👤 Milton S Tarnopol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:00
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/215; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A TRANSPARENT REFRACTORY BASE HAVING A TRANSPARENT ELECTROCONDUCTIVE INDIUM OXIDE COATING THEREON; SAID COATING HAVING A SPECIFIC RESISTIVITY BELOW ABOUT 0.05 OHM-CENTIMETER.
Claim 2
Dependent Claim
22 words
A TRANSPARENT REFRACTORY BASE HAVING A TRANSPARENT ELECTROCONDUCTIVE INDIUM OXIDE COATING THEREON; SAID COATING HAVING A SPECIFIC RESISTIVITY BELOW ABOUT 0.05 OHM-CENTIMETER.
References Cited (Backward Citations)
US894845A
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US2118795A
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US2429420A
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US2475379A
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US2564987A
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US2516663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |