US2639223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic decomposition of hydrocarbons
Assignee: Hercules Powder Co
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Filing: 1951-08-04
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Granted: 1953-05-19
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Expires: 1971-08-04
Abstract
No abstract record available.
Inventors
- 👤 James H Shapleigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:44
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; B01J37/00; B01J37/02; B01J37/0201; C01B2203/00; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE PROCESS OF DECOMPOSING A HYDROCARBON TO FORM HYDROGEN WHICH COMPRISES PASSING A GASEOUS MIXTURE OF HYDROCARBON AND STEAM OVER A HEATED CATALYST COMPRISING ZIRCONIUM SILICATE, MAGNESIA AND FROM ABOUT 5% TO ABOUT 50% OF NICKEL.
Claim 2
Dependent Claim
36 words
THE PROCESS OF DECOMPOSING A HYDROCARBON TO FORM HYDROGEN WHICH COMPRISES PASSING A GASEOUS MIXTURE OF HYDROCARBON AND STEAM OVER A HEATED CATALYST COMPRISING ZIRCONIUM SILICATE, MAGNESIA AND FROM ABOUT 5% TO ABOUT 50% OF NICKEL.
References Cited (Backward Citations)
GB317391A
Cited
US1948338A
Cited
US1970695A
Cited
US2028326A
Cited
US2125743A
Cited
US2417164A
Cited
US2489334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |