US2315519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of zirconium oxide
Assignee: Tam Ceramics LLC
•
Filing: 1940-10-16
•
Granted: 1943-04-06
•
Expires: 1960-10-16
Abstract
No abstract record available.
Inventors
- 👤 Donald S Hake
- 👤 Harold D Prior
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:43
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/02; C03; C03C; C03C1/00; C03C1/04; C01P; C01P2004/00; C01P2004/60; C01P2004/61
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-04-05 | 1946-10-05 | 1947-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-04-05 | 1950-10-05 | 1951-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-04-05 | 1954-10-05 | 1955-04-06 | $7700.00 | Window Closed / Lapsed |