US3404185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromium amine complex catalyzed oxidation of cyclic hydrocarbons to ketones
Assignee: Union Carbide Corp
•
Filing: 1964-04-29
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Granted: 1968-10-01
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Expires: 1984-04-29
Abstract
No abstract record available.
Inventors
- 👤 Donald C Thomas
- 👤 Joe T Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:31
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/14; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1805; B01J31/181; C07C407/00; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/36; B01J2531/00; B01J2531/60; B01J2531/62; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1789924A
Cited
US2640084A
Cited
GB824046A
Cited
US3164611A
Cited
US2920087A
Cited
US3040101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |