US3074817A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrolytically decomposed resistor consisting of the elements carbon, oxygen and silicon
Assignee: International Resistance Co
•
Filing: 1957-04-26
•
Granted: 1963-01-22
•
Expires: 1977-04-26
Abstract
No abstract record available.
Inventors
- 👤 Gentner Konrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:28
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/20; H01B; H01B1/00; H01B1/20; H01B1/24; H01C7/00; H01C7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
AN ELECTRICAL RESISTOR FORMED BY PYROLYTICALLY DECOMPOSING A NON-CONDUCTIVE BASE AN ATMOSPHERE CONTAINING THE ELEMENTS CARBON, SILICON AND OXYGEN, AND DEPOSITING ON THE BASE A RESISTANCE FILM CONSISTING ESSENTIALLY OF THE ELEMENTS CARBON, SILICON AND OXYGEN WITH THE CONTENT OF CARBON IN SAID RESISTANCE FILM BEING SUFFICIENT TO PROVIDE A DESIRED RESISTANCE VALUE, AND THEN PYROLYTICALLY DECOMPOSING OVER SAID RESISTANCE FILM A SECOND ATMOSPHERE CONTAINING THE ELEMENTS CARBON, SILICAN AND OXYGEN WITH THE PERCENTAGE CONTENT OF THE OXYGEN IN SAID SECOND ATMOSPHERE BEING GREATER THAN THAT IN SAID FIRST ATMOSPHERE, AND DEPOSITING ON SAID RESISTANCE FILM A SECOND FILM CONSISTING ESSENTIALLY OF THE ELEMENTS CARBON, SILICON AND OXYGEN WITH THE PERCENTAGE CONTENT OF OXIDES IN SAID SECOND FILM BEING GREATER THAN THAT IN SAID FIRST RESISTANCE FILM.
Claim 2
Dependent Claim
127 words
AN ELECTRICAL RESISTOR FORMED BY PYROLYTICALLY DECOMPOSING A NON-CONDUCTIVE BASE AN ATMOSPHERE CONTAINING THE ELEMENTS CARBON, SILICON AND OXYGEN, AND DEPOSITING ON THE BASE A RESISTANCE FILM CONSISTING ESSENTIALLY OF THE ELEMENTS CARBON, SILICON AND OXYGEN WITH THE CONTENT OF CARBON IN SAID RESISTANCE FILM BEING SUFFICIENT TO PROVIDE A DESIRED RESISTANCE VALUE, AND THEN PYROLYTICALLY DECOMPOSING OVER SAID RESISTANCE FILM A SECOND ATMOSPHERE CONTAINING THE ELEMENTS CARBON, SILICAN AND OXYGEN WITH THE PERCENTAGE CONTENT OF THE OXYGEN IN SAID SECOND ATMOSPHERE BEING GREATER THAN THAT IN SAID FIRST ATMOSPHERE, AND DEPOSITING ON SAID RESISTANCE FILM A SECOND FILM CONSISTING ESSENTIALLY OF THE ELEMENTS CARBON, SILICON AND OXYGEN WITH THE PERCENTAGE CONTENT OF OXIDES IN SAID SECOND FILM BEING GREATER THAN THAT IN SAID FIRST RESISTANCE FILM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |