Patent US3776133A successfully refreshed from Google Patents.
Patent US3421869A successfully refreshed from Google Patents.
US3421869A
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Method for the production of a mixture of hydrogen and steam
Assignee: Con-Gas Service Corp
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Filing: 1964-06-01
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Granted: 1969-01-14
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Expires: 1984-06-01
Abstract
No abstract record available.
Inventors
- 👤 Homer E Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:11
CPC Classifications
C; C10; C10J; C10J3/00; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/061; C01B3/063; C01B3/08; C01B3/10; C10J3/46; C10J3/48; C10J3/482; C10J3/72; C10J3/721; C10J3/725; C10J3/74; C10J3/78; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0946; C10J2300/0953; C10J2300/0956; C10J2300/0973; C10J2300/0976; C10J2300/12; C10J2300/1253; C10J2300/16; C10J2300/1603; C10J2300/1606; C10J2300/18; C10J2300/1807; C10J2300/1861; C10J2300/1869; C10J2300/1884; C10J2300/1892; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36; Y02P; Y02P20/00; Y02P20/10; Y02P20/129
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3222147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |