Patent US3515523A successfully refreshed from Google Patents.
US3515523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory alloys containing a dispersed phase of thoria and in processes for their production
Assignee: Office National d'Études et de Recherches Aérospatiales
•
Filing: 1968-03-22
•
Granted: 1970-06-02
•
Expires: 1988-03-22
Abstract
No abstract record available.
Inventors
- 👤 Philippe Galmiche
- 👤 Andre Hivert
- 👤 Michel Marty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:05
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/10; C22C1/1089
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |