US3795614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil additives
Assignee: Sanyo Chemical Industries Ltd
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Filing: 1971-10-08
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Granted: 1974-03-05
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Expires: 1991-10-08
Abstract
Abstract COPOLYMERS HAVING AS AN ESSENTIAL UNIT THEREOF THE RADICAL MORPHOLINO-(ALKYLENE-O)N-CO-C(-R)< WHERE A IS AN INTEGER OF 1 OR HIGHER AND R IS HYDROGEN OR METHYL, ARE ADDED TO LUBRICATING OILS TO IMPROVE THE DETERGENCY, DISPERSANCY AND VISCOSITY INDEX THEREOF.
Inventors
- 👤 T Fujimoto
- 👤 M Nishimura
- 👤 S Takigawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:12
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C10M2207/00; C10M2207/40; C10M2207/402; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/06
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |