Patent US1857799A successfully refreshed from Google Patents.
US1857799A
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US
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Production of water gas
Assignee: IG Farbenindustrie AG
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Filing: 1926-06-26
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Granted: 1932-05-10
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Expires: 1946-06-26
Abstract
No abstract record available.
Inventors
- 👤 Winkler Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J3/463; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/42; C10J2200/00; C10J2200/12; C10J2200/15; C10J2200/158; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0933; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/16; Y10S48/00; Y10S48/04
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) | 1935-05-10 | 1935-11-09 | 1936-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-10 | 1939-11-09 | 1940-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-10 | 1943-11-09 | 1944-05-10 | $7700.00 | Window Closed / Lapsed |