Patent US2170855A successfully refreshed from Google Patents.
Patent US3810845A successfully refreshed from Google Patents.
US3810845A
Expired / Lapsed
US
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Catalyst and process of preparing
Assignee: CROSFIELD CHEMICALS COMPANY A DIVISION OF INDOPCO Inc A CORP OF DELAWARE
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Filing: 1972-09-28
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Granted: 1974-05-14
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Expires: 1992-09-28
Abstract
Abstract A METHOD OF BONDING NEW ACTIVE CATALYTIC SURFACES ON TO A CATALYST SUPPORT IN ORDER TO PRODUCE A CATALYST FOR PETROLEUM OR PETROCHEMICAL PROCESSING IS DESCRIBED.
Inventors
- 👤 D Braithwaite
- 👤 C Johnson
- 👤 V Seale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:49
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/084; B01J29/085; B01J29/088; B01J2229/00; B01J2229/30; B01J2229/36; B01J2229/42; C10G2300/00; C10G2300/70
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) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |