US3288725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalysts for hydrogenation
Assignee: Cabot Corp
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Filing: 1963-10-25
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Granted: 1966-11-29
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Expires: 1983-10-25
Abstract
No abstract record available.
Inventors
- 👤 Victor D Aftandilian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:43
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/22; B01J31/2282; B01J31/2291; B01J31/1616; B01J31/1625; B01J31/1633; B01J31/2295; B01J31/26; B01J21/00; B01J21/06; B01J21/08; B01J21/18; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/645; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/824; B01J2531/828; B01J2531/84; B01J2531/847
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
60 words
A PROCESS FOR PRODUCING A HYDROGNENATION CATALYST WHICH COMPRISES ACTIVATING BY REDUCTION THE SOLID PRODUCT OF REACTION PRODUCED BY REACTING (A) A FINELY-DIVIDED INORGANIC SOLID HAVING AVERAGE PARTICLE DIAMETER OF LESS THAN ABOUT 0.1 MICRON AND HAVING A SURFACE HYDROXYL GROUP CONCENTRATION OF AT LEAST ABOUT 1X10**4 EQUIVALENTS PER GRAM OF SOLID AND (B) A COMPOUND CONFORMING TO THE FORMULA
References Cited (Backward Citations)
US3123571A
Cited
US2600379A
Cited
US2717889A
Cited
US2861960A
Cited
US2980662A
Cited
US3166541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |