Patent US1868831A successfully refreshed from Google Patents.
Patent US3794598A successfully refreshed from Google Patents.
US3794598A
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Catalyst preparation method
Assignee: Shell USA Inc
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Filing: 1972-06-21
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Granted: 1974-02-26
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Expires: 1992-06-21
Abstract
Abstract A HYDROCONVERSATION CATALYST INCLUDING A HYDROGENATING METAL COMPOUND HAVING AN ATOMIC NUMBER BETWEEN 20 AND 32 ZEOLITE AT LEAST PARTIALLY IN HYDROGEN (ACID) FROM IN EXCESS OF THE ION-EXCHANGE CAPACITY OF THE ZEROLITE IS PREPARED IN A SINGLE REACTION STEP BY REMOVING SUFFICIENT HYDROGEN IONS AS GENERATED DURING THE ION-EXCHANGE REACTION TO INCOPORATE THE DESIRED AMOUNT OF HYDROGENATING COMPONENT.
Inventors
- 👤 W Schlaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:26
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |