US3275722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of dense bodies of silicon carbide
Assignee: Power Jets Research and Development Ltd
•
Filing: 1959-07-08
•
Granted: 1966-09-27
•
Expires: 1979-07-08
Abstract
No abstract record available.
Inventors
- 👤 Popper Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:30
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/573; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/956; C01B32/963; C01B32/984
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1013701A
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US992698A
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US1266478A
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US2431326A
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US2431327A
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US2614947A
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US3079273A
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US2938807A
Cited
US3035325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |