US3794671A
Expired / Lapsed
US
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Catalysts and compositions therefor
Assignee: Johnson Matthey PLC
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Filing: 1971-07-20
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Granted: 1974-02-26
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Expires: 1991-07-20
Abstract
Abstract NONHALOGEN OR PSEUDO-HALOGEN COORDINATION COMPLEXES OF RH(1) CONTAINING A STABILIZING DONOR LIGAND. THE COMPLEXES ARE MADE BY ADDING A COMPOUND WHICH ACATS AS A STABILIZING DONOR TO A SOLUTION OF A RHODIUM (II) CARBOXYLATE PROTONATED BY AN ACID.THE COMPLEXES ARE USEFUL CATALYSTS.
Inventors
- 👤 G Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:38
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/0006; C07F15/0073; C07F15/008; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1895; B01J31/20; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/24; B01J31/2404; B01J31/26; B01J31/28; C07C; C07C45/00; C07C45/49; C07C45/50; C07C5/00; C07C5/02; C07C5/03; C07C5/08; C07C5/22; C07C5/2206; C07C5/2266; C07C5/2293; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/645; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/822; C07C2531/00; C07C2531/16; C07C2531/24; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |