Patent US3189476A successfully refreshed from Google Patents.
US3189476A
Expired / Lapsed
US
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Metallizing process for ceramics
Assignee: Individual
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Filing: 1962-09-18
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Granted: 1965-06-15
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Expires: 1982-09-18
Abstract
No abstract record available.
Inventors
- 👤 Robert E Cowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:03
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/51; C04B41/5133; C04B41/5138; C04B41/80; C04B41/81; C04B41/85; C04B41/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FOR FORMING A METALLIC COATING ON AN ALUMINA CERAMIC SURFACE, SAID COATING CONTAINING BETWEEN 84 AND 95 PERCENT BY WEIGHT OF THE METAL, SAID METAL BEING SELECTED FROM THE CLASS CONSISTING OF MOLYBDENUM AND TUNGSTEN, COMPRISING THE APPLYING OF A POWDERED CALCIUM OXIDE-ALUMINUM OXIDE AND A METALLIC OXIDE OF AT LEAST ONE OF THE SAID METALS IN AN APPROXIMATE MOLAR RATIO OF 1:1:10 RESPECTIVELY IN A THIN COATING TO THE SAID CERAMIC SURFACE AND HEATING THE SAID CERAMIC AND ITS COATING IN AN ATMOSPHERE WHICH IS REDUCING ONLY TO SAID METALLIC OXIDE TO A TEMPERATURE OF APPROXIMATELY 1650*C. FOR ABOUT 30 MINUTES.
Claim 2
Dependent Claim
104 words
A PROCESS FOR FORMING A METALLIC COATING ON AN ALUMINA CERAMIC SURFACE, SAID COATING CONTAINING BETWEEN 84 AND 95 PERCENT BY WEIGHT OF THE METAL, SAID METAL BEING SELECTED FROM THE CLASS CONSISTING OF MOLYBDENUM AND TUNGSTEN, COMPRISING THE APPLYING OF A POWDERED CALCIUM OXIDE-ALUMINUM OXIDE AND A METALLIC OXIDE OF AT LEAST ONE OF THE SAID METALS IN AN APPROXIMATE MOLAR RATIO OF 1:1:10 RESPECTIVELY IN A THIN COATING TO THE SAID CERAMIC SURFACE AND HEATING THE SAID CERAMIC AND ITS COATING IN AN ATMOSPHERE WHICH IS REDUCING ONLY TO SAID METALLIC OXIDE TO A TEMPERATURE OF APPROXIMATELY 1650*C. FOR ABOUT 30 MINUTES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |