US1848295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of phosphoric acid and hydrogen
Assignee: Bayerische Stickstoffwerke A G
•
Filing: 1929-02-28
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Granted: 1932-03-08
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Expires: 1949-02-28
Abstract
No abstract record available.
Inventors
- 👤 Ipatiew Wladimir Nikolajewitch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:53
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/20; C01B3/00; C01B3/02; C01B3/06; C01B3/066; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36
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) | 1935-03-08 | 1935-09-07 | 1936-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-08 | 1939-09-07 | 1940-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-08 | 1943-09-07 | 1944-03-08 | $7700.00 | Window Closed / Lapsed |