US2928755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-coated ceramic article and process for producing the same
Assignee: VEB FUNKWERK ERFURT
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Filing: 1958-01-28
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Granted: 1960-03-15
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Expires: 1978-01-28
Abstract
No abstract record available.
Inventors
- 👤 Brandstadt Wilhelm
- 👤 Wlokka Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:15
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B37/00; C04B37/02; C04B37/023; C04B37/026; C04B41/45; C04B41/50; C04B41/51; C04B41/5138; C04B41/80; C04B41/81; C04B41/85; C04B41/88; H; H01; H01B; H01B1/00; C04B2235/00; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/124; C04B2237/126; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/40; C04B2237/403; C04B2237/50; C04B2237/55
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
A PROCESS FOR PRODUCING A METALLIC COATING ON A CERAMIC BODY CONSISTING OF HIGHLY SINTERED ALUMINUM OXIDE WHICH COMPRISES APPLYING TO SAID CERAMIC BODY HAVING A SINTERING TEMPERATURE OF APPROXIMATELY 1800* C. A MIXTURE OF POWDERED INGREDIENTS CONSISTING OF COPPER AND MANGANESE IN THE APPROXIMATE RATION OF 2:1, AND OF ZIRCONIUM OXIDE IN AN AMOUNT RANGING FROM 2-20% BY WEIGHT OF THE TOTAL MIXTURE, AND HEATING SAID POWDERED MIXTURE TO A SINTERING TEMPERATURE OF ABOUT 1400*C., WHEREBY A METALLIC COATING IS FOUND ON SAID CERAMIC BODY.
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) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |