US2004141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the oxidation of ammonia and improved catalyst therefor
Assignee: Baker and Co Inc
•
Filing: 1933-07-22
•
Granted: 1935-06-11
•
Expires: 1953-07-22
Abstract
No abstract record available.
Inventors
- 👤 John N Tilley
- 👤 Whitehead Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:54
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/24; C01B21/26; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/46; B01J23/464
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) | 1938-06-10 | 1938-12-10 | 1939-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-06-10 | 1942-12-10 | 1943-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-06-10 | 1946-12-10 | 1947-06-11 | $7700.00 | Window Closed / Lapsed |