US3576899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing high purity methane
Assignee: JGC Corp
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Filing: 1968-04-18
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Granted: 1971-04-27
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Expires: 1988-04-18
Abstract
Abstract IN THE MANUFACTURE OF METHANE FROM A HYDROCARBON HAVING TWO OR MORE CARBON ATOMS PER MOLECULE BY HYDROCRACKING THE SAME, I.E. BY PASSING THE HYDROCARBON JOINTLY WITH HYDROGEN THROUGH A BED OF HIGHLY ACTIVATED SOLID NICKEL CATALYST, A HIGH PURITY METHANE WILL BE OBTAINED IF THE MAXIMUM TEMPERATURE OF SAID CATALYST BED IS HELD WITHIN THE RANGE FROM 400*C. TO 600*C. BY SUPPLYING STEAM TO SAID BED AND IF THE TEMPERATURE AT THE OUTLET OF SAID BED IS MAINTAINED 100*C. LOWER THAN SAID MAXIMUM TEMPERATURE BY REMOVING REACTION HEAT FROM THE CATALYST BED BY MEANS OF INDIRECT HEAT EXCHANGE.
Inventors
- 👤 Tadashi Ishiguro
- 👤 Akira Tomita
- 👤 Shohachi Egashira
- 👤 Tetsuji Nakamura
- 👤 Hiroo Matsuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:53
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |