US3552924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen manufacture
Assignee: Phillips Petroleum Co
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Filing: 1966-08-15
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Granted: 1971-01-05
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Expires: 1986-08-15
Abstract
Abstract A PROCESS FOR PRODUCING HYDROGEN FROM AN EXCESS REFINERY STREAM OR MIXTURE OF REFINERY STREAMS BY HYDROCRACKING, STEAM REFORMING A VAPOROUS FRACTION FROM THE HYDROCRACKING STEP, CONTACTING THE EFFLUENT FROM THE REFORMING STEP ADMIXED WITH ADDITIONAL STEAM WITH A WATER GAS SHIFT CATALYST, RECYCLING A PORTION OF THE HYDROGEN SEPARATED FROM THE SHIFT REACTION TO THE HYDROCRACKING STEP, AND RECOVERING THE REMAINDER OF THE HYDROGEN AS PRODUCT.
Inventors
- 👤 Harold J Hepp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:42
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/48; C01B3/06; C01B3/12; C01B3/16; C01B2203/00; C01B2203/02; C01B2203/0205; C01B2203/0227; C01B2203/0233; C01B2203/0283; C01B2203/04; C01B2203/0415; C01B2203/0465; C01B2203/0475; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; C01B2203/1076; C01B2203/1082; C01B2203/12; C01B2203/1205; C01B2203/1211; C01B2203/1235; C01B2203/1247; C01B2203/1258; C01B2203/14; C01B2203/148; C10; C10G; C10G2400/00; C10G2400/26
Claims Analysis
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |