US2018760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for ammonia oxidation and the like
Assignee: Bishop & Co Platinum Works J
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Filing: 1930-10-29
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Granted: 1935-10-29
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Expires: 1950-10-29
Abstract
No abstract record available.
Inventors
- 👤 George M Hickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:53
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/24; C01B21/26; C01B21/265; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/46; B01J23/464
Claims Analysis
Total Claims: 0
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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) | 1938-10-28 | 1939-04-29 | 1939-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-28 | 1943-04-29 | 1943-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-28 | 1947-04-29 | 1947-10-29 | $7700.00 | Window Closed / Lapsed |