Patent US3736233A successfully refreshed from Google Patents.
US3736233A
Expired / Lapsed
US
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Process of pyrolyzing and desulfurizing sulfur bearing agglomerative bituminous coal
Assignee: Occidental Petroleum Corp
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Filing: 1970-07-23
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Granted: 1973-05-29
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Expires: 1990-07-23
Abstract
Abstract THIS INVENTION DISCLOSES AN EFFICIENT ECONOMICAL CONTINUOUS METHOD OF PYROLYSING AND DESULRURIZING AGGLOMERATIVE BITUMINOUS COAL IN A TRANSPORT REACTOR TO RECOVER VOLATILE HYDROCARBONS AND HYDROGEN BY HEATING THE PARTICULAR COAL AND CHAR HAVING PARTICLE SIZES OF LESS THAN 65 MICRONS ENTRAINED IN AN INERT CARRIER GAS HAVING PYROLYSIS REACTOR RESIDENCE TIMES OF UNDER THREE SECONDS.
Inventors
- 👤 A Sass
- 👤 C Finney
- 👤 H Mccarthy
- 👤 P Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:48
CPC Classifications
C; C10; C10G; C10G1/00; C10B; C10B49/00; C10B49/16; C10B49/20; C10G1/002; C10G1/006; C10G1/02; C10G1/06
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |