US3379523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-pressing of decomposable compounds to form oxide-containing products
Assignee: Canadian Patents and Development Ltd
•
Filing: 1964-12-14
•
Granted: 1968-04-23
•
Expires: 1984-12-14
Abstract
No abstract record available.
Inventors
- 👤 Chaklader Asoke Chandra Das
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:02
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/32; C04B33/326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1533689A
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US1548808A
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US2538959A
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US2915407A
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US3141782A
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US2952535A
Cited
US3177077A
Cited
US3143413A
Cited
US3168371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |