US3401095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying nitric acid
Assignee: GNII PI AZOTNOJ
•
Filing: 1964-07-21
•
Granted: 1968-09-10
•
Expires: 1984-07-21
Abstract
No abstract record available.
Inventors
- 👤 Saradzhev Lev Vaagovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:59
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/38; C01B21/44; C01B21/46
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1379260A
Cited
GB281642A
Cited
US2463453A
Cited
US2761761A
Cited
US3106515A
Cited
US2990341A
Cited
US3206381A
Cited
US3250687A
Cited
US3161574A
Cited
US3202481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |