US3726809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst supports and transition metal catalysts supported thereon
Assignee: BP PLC
•
Filing: 1970-12-14
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Granted: 1973-04-10
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Expires: 1990-12-14
Abstract
Abstract CATALYST SUPPORTS ARE PREPARED BY REACTING AN INORGANIC SOLID MATERIAL (I) CONTAINING -OH GROUPS E.G. SILICA WTH A COMPOUND (II) CONTAINING SILICON AND PHOSPHORUS E.G. (ETO)3SICH2CH2PET2. THE PRODUCT CAN BE REACTED WITH TRANSITION METAL COMPOUNDS E.G. GROUP VIII METAL OMPOUNDS TO VIELD HETEROGENEOUS CATALYSTS IN AN ALTERNATIVE PREPARATION THE TRANSITION METAL COMPOUND CAN BE REACTED WITH COMPOUND (II) AND THE RODUCT THEN REACTED WITH THE COMPOUND (I).
Inventors
- 👤 K Allum
- 👤 Kenzie S Mc
- 👤 C Pitkethly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:37
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2562; C07C5/2593; B; B01; B01J; B01J31/00; B01J31/16; B01J31/1616; B01J31/1625; B01J31/1633; B01J31/24; B01J31/2404; B01J37/00; B01J37/02; B01J37/0201; B01J37/0209; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/36; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C07C2/50; C07C2/52; C07C45/00; C07C45/49; C07C45/50; C07C5/02; C07C5/03; C07C5/05; C07F; C07F15/00; C07F15/0006; C07F15/0013; C07F15/0073; C07F15/008; C08; C08F; C08F10/00; B01J2231/00; B01J2231/20; B01J2231/30; B01J2231/32; B01J2231/323; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/645; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/822; B01J2531/824; B01J2531/827; B01J2531/84; B01J2531/845; B01J2531/847; C07C2531/00; C07C2531/02; C07C2601/00; C07C2601/12; C07C2601/16; Y; Y02; Y02P; Y02P20/00; Y02P20/50
Claims Analysis
Total Claims: 0
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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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |