US3652641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocyanation of olefins
Assignee: EIDP Inc
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Filing: 1969-08-04
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Granted: 1972-03-28
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Expires: 1989-08-04
Abstract
Abstract A PROCESS FOR THE HYDROCYANATION OF NON-CONJUGATED ETHYLENICALLY UNSATURATED ORGANIC COMPOUNDS, USING CERTAIN NICKEL COMPLEXES, SUCH AS A TETRAKIS (TRIARYL PHOSPHITE) NICKEL (0), AS CATALYST AND A BORON COMPOUND SELECTED FROM THE CLASS CONSISTING OF B(OR'')3 WHERE R'' IS AN ALKYL OR ARYL GROUP OF UP TO 7 CARBON ATOMS, AND NB(OH)3-XH2O WHERE N IS 1 OR 2 AND X IS FROM 0 TO 3.
Inventors
- 👤 Joe Douglas Druliner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:10
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/14; B01J31/146; B01J31/16; B01J31/18; B01J31/1845; B01J31/185; B01J31/24; B01J31/2404; B01J31/26; C; C07; C07C; C07C253/00; C07C253/08; C07C253/10; C07F; C07F15/00; C07F15/04; B01J2231/00; B01J2231/30; B01J2231/32; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/847
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) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |