Patent US3630903A successfully refreshed from Google Patents.
US3630903A
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Lubricant containing polymeric products of alkenyl succinic anhydride and a piperidine derivative
Assignee: Texaco Inc
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Filing: 1969-08-07
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Granted: 1971-12-28
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Expires: 1989-08-07
Abstract
Abstract A LUBRICATING COMPOSITION CONTAINING AS A DISPERSANT BETWEEN ABOUT 0.1 AND 80 WT. PERCENT OF A POLYMERIC ALKENYL SUCCINIC ANHYDRIDE-PIPERIDINE DERIVATIVE CHARACTERIZED THE FORMULA: HO-(CO-CH2-CH(-R)-CO-Z)X-H WHERE X IS AVERAGE INTERGER OF FROM 2 TO 100 AND Z IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF -O-4,1-PIPERIDYLENE-M-O- -O-A-1,4-PIPERIDYLENE-D-4,1-PIPERIDYLENE-M-O- -O-A-1,4-PIPERIDYLENE-D-4,1-PIPERIDYLENE 1,4-PIPERIDYLENE-D-4,1-PIPERIDYLENE WHERE A, M AND D ARE DIVALTENT SATURATED ALIPHATIC HYDROCARBONS OF FROM 2 TO 10 CARBONS, AND R IS A NONOVALENT ALKENYL HYDROCARBON RADICAL OF FROM 30 TO 200 CARBONS.
Inventors
- 👤 Walter W Hellmuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:32
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F8/00; C08F8/30; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/44; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06; C10N; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/12; C10N2070/00; C10N2070/02
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |