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Patent US3130170A successfully refreshed from Google Patents.
US3130170A
Expired / Lapsed
US
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Preparation of cracking catalysts from clay
Assignee: WR Grace and Co
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Filing: 1961-08-07
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Granted: 1964-04-21
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Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 Stover William Albert
- 👤 Warren S Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:26
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR PREPARING CRACKING CATALYTS FROM CLAY WHICH COMPRISES: (A) CALCINING A CLAY SELECTED FROM THE GROUP CONSISTING OF KAOLIN AND HALLOYSITE AT A TEMPERATURE OF 800 TO 1400*F. FOR A PERIOD OF 1 TO 4 HOURS WITH FROM 35 TO 80% BY WEIGHT OF THE DRY CLAY OF A SODIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM CARBONATE, SODIUM SULFITE, SODIUM ACID SULFITE AND SODIUM HYDROXIDE SUFFICIENT TO FORM A SODIUM-ALUMINA SILICATE COMPLEX.
Claim 2
Dependent Claim
76 words
A PROCESS FOR PREPARING CRACKING CATALYTS FROM CLAY WHICH COMPRISES: (A) CALCINING A CLAY SELECTED FROM THE GROUP CONSISTING OF KAOLIN AND HALLOYSITE AT A TEMPERATURE OF 800 TO 1400*F. FOR A PERIOD OF 1 TO 4 HOURS WITH FROM 35 TO 80% BY WEIGHT OF THE DRY CLAY OF A SODIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM CARBONATE, SODIUM SULFITE, SODIUM ACID SULFITE AND SODIUM HYDROXIDE SUFFICIENT TO FORM A SODIUM-ALUMINA SILICATE COMPLEX.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |