US1330772A
Expired / Lapsed
US
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Producing hydrogen
Assignee: Chemical Foundation Inc
•
Filing: 1914-06-04
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Granted: 1920-02-10
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Expires: 1934-06-04
Abstract
No abstract record available.
Inventors
- 👤 Bosch Carl
- 👤 Mittasch Alwin
- 👤 Beck Christoph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:18
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16; C01B2203/00; C01B2203/02; C01B2203/0283; C01B2203/04; C01B2203/0435; C01B2203/045; C01B2203/0465; C01B2203/0485; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; C01B2203/1076; C01B2203/1094
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) | 1923-02-09 | 1923-08-11 | 1924-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-02-09 | 1927-08-11 | 1928-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-02-09 | 1931-08-11 | 1932-02-10 | $7700.00 | Window Closed / Lapsed |