US3580970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation of cycloaliphatic ketones and alcohols
Assignee: Gulf Research and Development Co
•
Filing: 1967-11-22
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Granted: 1971-05-25
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Expires: 1987-11-22
Abstract
Abstract CYCLOALIPHATIC KETONES AND ALCOHOLS ARE DEHYDROGENATED TO THE CORRESPONDING HYDROXYAROMATIC COMPOUNDS AT ELEVATED TEMPERATURES IN THE PRESENCE OF A NOVEL NICKEL-TIN CATALYST.
Inventors
- 👤 Harold E Swift
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:44
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/835; B01J21/00; B01J21/06; B01J21/08; B01J21/20; B01J23/38; B01J23/54; B01J23/56; B01J23/62; B01J23/622; B01J23/626; C; C07; C07C; C07C37/00; C07C37/06; C07C37/07; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y02P20/584
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |