US2823116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing sintered zirconium metal from its hydrides
Assignee: Individual
•
Filing: 1950-12-27
•
Granted: 1958-02-11
•
Expires: 1970-12-27
Abstract
No abstract record available.
Inventors
- 👤 Roswell P Angier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:51
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/14; C22B60/00; C22B60/02; C22B60/0291; C22C; C22C1/00; C22C1/04; C22C1/045; C22C1/0458
Claims Analysis
Total Claims: 0
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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) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |