US2901381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electrical resistors
Assignee: AT&T Inc
•
Filing: 1956-10-12
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Granted: 1959-08-25
•
Expires: 1976-10-12
Abstract
No abstract record available.
Inventors
- 👤 Gordon K Teal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:58
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/075; H01C17/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
THE METHOD OF FORMING AN ELECTRICAL RESISTOR HAVING A HIGH RESISTANCE DEPOSITED LAYER WHICH COMPRISES PYROLYTICALLY DECOMPOSING A GASEOUS MIXTURE COMPRISING TITANIUM TETRACHLORIDE AND A CARBONACEOUS GAS AT THE HEATED SURFACE OF A BASE ON WHICH SAID FILM IS TO BE DEPOSITED.
Claim 2
Independent Claim
42 words
THE METHOD OF FORMING AN ELECTRICAL RESISTOR HAVING A HIGH RESISTANCE DEPOSITED LAYER WHICH COMPRISES PYROLYTICALLY DECOMPOSING A GASEOUS MIXTURE COMPRISING TITANIUM TETRACHLORIDE AND A CARBONACEOUS GAS AT THE HEATED SURFACE OF A BASE ON WHICH SAID FILM IS TO BE DEPOSITED.
References Cited (Backward Citations)
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Cited
US2057431A
Cited
US2405449A
Cited
US2556991A
Cited
US2656284A
Cited
US2551341A
Cited
US2671735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |