US2769778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making transparent conducting films by cathode sputtering
Assignee: National Research Development Corp UK
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Filing: 1952-09-02
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Granted: 1956-11-06
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Expires: 1972-09-02
Abstract
No abstract record available.
Inventors
- 👤 Preston John Silvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:21
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/27; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/211; C03C2217/215; C03C2217/23; C03C2217/231; C03C2218/00; C03C2218/10; C03C2218/15; C03C2218/154; C03C2218/30; C03C2218/32; C03C2218/322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
THE METHOD OF PROVIDING A SURFACE OF AN ARTICLE OF HEAT RESISTING MATERIAL WITH A THIN ELECTRICALLY CONDUCTIVE FILM WHICH COMPRISES DEPOSITING ON THE SURFACE BY CATHODE SPUTTERING, IN THE PRESENCE OF OXYGEN INSUFFICIENT IN CONCENTRATION TO OXIDISE THE METAL COMPLETELY, A THIN YELLOWTO-BROWN COATING, AS UNIFORM AS MAY BE, DERIVED FROM A METAL SELECTED FROM THE GROUP CONSISTING OF METALLIC TIN AND METALLIC INDIUM, AND THEREAFTER HEATING THE COATED SURFACE UNDER OXIDISING CONDITIONS UNTIL IT BECOMES SUBSTANTIALLY TRANSPARENT.
Claim 2
Independent Claim
79 words
THE METHOD OF PROVIDING A SURFACE OF AN ARTICLE OF HEAT RESISTING MATERIAL WITH A THIN ELECTRICALLY CONDUCTIVE FILM WHICH COMPRISES DEPOSITING ON THE SURFACE BY CATHODE SPUTTERING, IN THE PRESENCE OF OXYGEN INSUFFICIENT IN CONCENTRATION TO OXIDISE THE METAL COMPLETELY, A THIN YELLOWTO-BROWN COATING, AS UNIFORM AS MAY BE, DERIVED FROM A METAL SELECTED FROM THE GROUP CONSISTING OF METALLIC TIN AND METALLIC INDIUM, AND THEREAFTER HEATING THE COATED SURFACE UNDER OXIDISING CONDITIONS UNTIL IT BECOMES SUBSTANTIALLY TRANSPARENT.
References Cited (Backward Citations)
US2429420A
Cited
US2516663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |