US3634291A
Expired / Lapsed
US
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Method of recovering cobalt or cobalt plus group ii metal catalyst in oxo synthesis process
Assignee: Tonen General Sekiyu KK
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Filing: 1968-10-21
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Granted: 1972-01-11
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Expires: 1988-10-21
Abstract
Abstract A METHOD FOR RECOVERING A REACTION CATALYST FROM AN OXO OR AN ALDOX PROCESS IN WHICH THE WASTE CATALYSTCONTAINING SOLUTION OBTAINED BY THE DECATALYXING STEP IS TREATED WITH AN ORGANIC EXTRACTING MEDIUM AND AN ALKALI METAL HYDROXIDE IN ORDER TO OBTAIN THE CATALYST METAL OR METALS IN THE FORM OF HYDROXIDES SUSPENDED IN THE ORGANIC EXTRACTING MEDIUM.
Inventors
- 👤 Seiji Usami
- 👤 Kotaro Nishimura
- 👤 Takeo Koyama
- 👤 Saburo Fukushi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:27
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; B; B01; B01J; B01J23/00; B01J23/90; B01J23/94; C07C45/78; C07C45/80; C07C45/85; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/262; C22B3/302; C22B3/306; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |