US3013328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a conductive film
Assignee: General Electric Co
•
Filing: 1954-10-22
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Granted: 1961-12-19
•
Expires: 1974-10-22
Abstract
No abstract record available.
Inventors
- 👤 James E Beggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:18
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/636; C04B35/6365; C04B37/028; H; H01; H01B; H01B1/00; H01C; H01C17/00; H01C17/06; H01C17/20; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/08; C04B2237/086; C04B2237/12; C04B2237/122; C04B2237/123; C04B2237/125; C04B2237/126; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/341; C04B2237/343; C04B2237/40; C04B2237/403; C04B2237/405; C04B2237/50; C04B2237/59; C04B2237/592; C04B2237/62; C04B2237/64; C04B2237/70; C04B2237/708; C04B2237/76; C04B2237/765; C04B2237/78; C04B2237/80; C04B2237/84; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE METHOD OF FORMING A RESISTANCE FILM ON THE SURFACE OF A CERAMIC MEMBER WHICH COMPRISES FORMING A COATING BY APPLYING A CARBON CONTAINING COMPOUND TO THE SURFACE OF SAID MEMBER ON WHICH THE FILM IS TO BE FORMED, SAID CARBON-CONTAINING COMPOUND BEING OF THE TYPE THAT WHEN DECOMPOSED BY HEAT LEAVES A CARBON RESIDUE UPON CERAMIC MATERIAL, PLACING A METAL HYDRIDE IN CONTACT WITH SAID COATING, THE METAL BEING SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, HAFNIUM, THORIUM, AND TANTALUM, HEATING THE MEMBER, THE COMPOUND AND HYDRIDE IN A VACUUM TO FORM A CARBONACEOUS FILM ON SAID MEMBER, DECOMPOSE THE HYDRIDE AND COMBINE THE METAL OF THE HYDRIDE WITH THE CERAMIC AND CONTROLLING THE DURATION AND LEVEL OF SAID HEATING TO CONTROL THE RESISTANCE CHARACTERISTIC OF THE FILM PRODUCED.
Claim 2
Independent Claim
131 words
THE METHOD OF FORMING A RESISTANCE FILM ON THE SURFACE OF A CERAMIC MEMBER WHICH COMPRISES FORMING A COATING BY APPLYING A CARBON CONTAINING COMPOUND TO THE SURFACE OF SAID MEMBER ON WHICH THE FILM IS TO BE FORMED, SAID CARBON-CONTAINING COMPOUND BEING OF THE TYPE THAT WHEN DECOMPOSED BY HEAT LEAVES A CARBON RESIDUE UPON CERAMIC MATERIAL, PLACING A METAL HYDRIDE IN CONTACT WITH SAID COATING, THE METAL BEING SELECTED FROM THE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, HAFNIUM, THORIUM, AND TANTALUM, HEATING THE MEMBER, THE COMPOUND AND HYDRIDE IN A VACUUM TO FORM A CARBONACEOUS FILM ON SAID MEMBER, DECOMPOSE THE HYDRIDE AND COMBINE THE METAL OF THE HYDRIDE WITH THE CERAMIC AND CONTROLLING THE DURATION AND LEVEL OF SAID HEATING TO CONTROL THE RESISTANCE CHARACTERISTIC OF THE FILM PRODUCED.
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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) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |