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Patent US2575324A successfully refreshed from Google Patents.
US2575324A
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Nickel-magnesia-zirconium silicate catalyst
Assignee: Hercules Powder Co
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Filing: 1946-05-18
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Granted: 1951-11-20
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Expires: 1966-05-18
Abstract
No abstract record available.
Inventors
- 👤 James H Shapleigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:44
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J37/00; B01J37/02; B01J37/0201; C; C01; C01B; C01B2203/00; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A CATALYST FOR PROMOTING THE REACTION BETWEEN A HYDROCARBON AND STEAM COMPRISING ZIRCONIU SILICATE, MAGNESIA AND BETWEEN ABOUT 5% AND ABOUT 50% OF NICKEL.
Claim 2
Dependent Claim
24 words
A CATALYST FOR PROMOTING THE REACTION BETWEEN A HYDROCARBON AND STEAM COMPRISING ZIRCONIU SILICATE, MAGNESIA AND BETWEEN ABOUT 5% AND ABOUT 50% OF NICKEL.
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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) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |