US3442989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming carbon-bonded silicon carbide bodies
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1966-03-07
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Granted: 1969-05-06
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Expires: 1986-03-07
Abstract
No abstract record available.
Inventors
- 👤 Richard D Hildebrandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:47
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/956
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3168602A
Cited
US2131021A
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US2637072A
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US2799912A
Cited
US2807856A
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US3092437A
Cited
US3166614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |