Patent US5713946A successfully refreshed from Google Patents.
US3083445A
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Method of making an electrical resistance device
Assignee: Engelhard Industries Inc
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Filing: 1957-08-08
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Granted: 1963-04-02
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Expires: 1977-08-08
Abstract
No abstract record available.
Inventors
- 👤 James S Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:08
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF MAKING A RESISTANCE HEATED MEMBER COMPRISING FLAME SPRAYING AN ALUMINUM OXIDE FIRST COATING ON A SURFACE OF A SILICA CONTAINING REFRACTORY SUPPORT, MOUNTING A METAL TAKEN FROM THE GROUP CONSISTING OF PLATINUM GROUP METALS AND ALLOYS THEREOF ON THE SPRAYED SURFACE, AND FLAME SPRAYING A FURTHER COATING OF ALUMINUM OXIDE ON THE METAL AND SAID FIRST COATING THEREBY EMBEDDING THE METAL IN FUSED ALUMINUM OXIDE.
Claim 2
Independent Claim
68 words
THE METHOD OF MAKING A RESISTANCE HEATED MEMBER COMPRISING FLAME SPRAYING AN ALUMINUM OXIDE FIRST COATING ON A SURFACE OF A SILICA CONTAINING REFRACTORY SUPPORT, MOUNTING A METAL TAKEN FROM THE GROUP CONSISTING OF PLATINUM GROUP METALS AND ALLOYS THEREOF ON THE SPRAYED SURFACE, AND FLAME SPRAYING A FURTHER COATING OF ALUMINUM OXIDE ON THE METAL AND SAID FIRST COATING THEREBY EMBEDDING THE METAL IN FUSED ALUMINUM OXIDE.
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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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |