US3051737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation and use of catalysts
Assignee: Council of Scientific and Industrial Research
•
Filing: 1958-07-18
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Granted: 1962-08-28
•
Expires: 1978-07-18
Abstract
No abstract record available.
Inventors
- 👤 Gibson Eric John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:26
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/0445; B; B01; B01J; B01J37/00; B01J37/34; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/70; C07C2523/74; C07C2523/745; C07C2523/76; C07C2523/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METHOD OF INCREASING THE ACTIVITY OF A SOLID UNREDUCED ALKALI-PROMOTED IRON OXIDE CATALYST WHICH HAS BEEN SUBJECTED AT LEAST TO INCIPIENT MELTING TEMPERATURE, FOR USE IN THE CATALYTIC SYNTHESIS OF HYDROCARBONS FROM CARBON MONOXIDE AND HYDROGEN COMPRISING SUBJECTING SAID CATALYST IN THE FROM OF PARTICLES BELOW 200U IN SIZE OF IONIZING RADIATION.
Claim 2
Independent Claim
53 words
A METHOD OF INCREASING THE ACTIVITY OF A SOLID UNREDUCED ALKALI-PROMOTED IRON OXIDE CATALYST WHICH HAS BEEN SUBJECTED AT LEAST TO INCIPIENT MELTING TEMPERATURE, FOR USE IN THE CATALYTIC SYNTHESIS OF HYDROCARBONS FROM CARBON MONOXIDE AND HYDROGEN COMPRISING SUBJECTING SAID CATALYST IN THE FROM OF PARTICLES BELOW 200U IN SIZE OF IONIZING RADIATION.
References Cited (Backward Citations)
US2485945A
Cited
US2845414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |