US3751515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation process
Assignee: Goodyear Tire and Rubber Co
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Filing: 1972-03-28
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Granted: 1973-08-07
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Expires: 1992-03-28
Abstract
Abstract THERE IS DISCLOSED A METHOD FOR THE HYDROGENATION OF MONOOLEFINS, CYCLOOLEFINS, DIOLEFINS, CYCLODIOLEFINS AND ACETYLENES WHICH ARE HYDROGENATED WHEN PASSED WITH HYDROGEN OVER A CATALYST COMPRISING AN ALKALI METAL DISPERSED ON AN ANHYDROUS SUPPORT, SAID CATALYST HAVING A SURFACE AREA OF AT LEAST ONE SQUARE METER PER GRAM AT TEMPERATURES RANGING FROM ABOUT 80*C. TO ABOUT 500*C.
Inventors
- 👤 M Zadra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:39
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/08; C07C5/03; C07C2523/00; C07C2523/02; C07C2523/04
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |