US3387942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrogen
Assignee: Catalysts and Chemicals Inc
•
Filing: 1965-05-10
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Granted: 1968-06-11
•
Expires: 1985-05-10
Abstract
No abstract record available.
Inventors
- 👤 Robert H Habermehl
- 👤 Kenton A Atwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:04
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/12; C01B3/16; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/80; C01B3/32; C01B3/34; C01B3/48; C01B2203/00; C01B2203/02; C01B2203/0205; C01B2203/0227; C01B2203/0233; C01B2203/0283; C01B2203/0288; C01B2203/04; C01B2203/0415; C01B2203/0435; C01B2203/0445; C01B2203/0465; C01B2203/047; C01B2203/0475; C01B2203/08; C01B2203/0805; C01B2203/0811; C01B2203/0816; C01B2203/0866; C01B2203/0872; C01B2203/0883; C01B2203/10; C01B2203/1005; C01B2203/1011; C01B2203/1041; C01B2203/1047; C01B2203/1052; C01B2203/1076; C01B2203/12; C01B2203/1205; C01B2203/1211; C01B2203/1235; C01B2203/1241; C01B2203/1258; C01B2203/1264; C01B2203/127; C01B2203/14; C01B2203/146; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |