US3594319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additives for fuel antioxidants and for lubricants
Assignee: Bayer AG
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Filing: 1969-01-21
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Granted: 1971-07-20
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Expires: 1989-01-21
Abstract
Abstract ADDITIVES TO LUBRICANTS AND FUEL ANTIOXIDANTS, CONSISTING OF OR CONTAINING ISOINDOLINE COMPOUNDS OF THE FORMULA 1-(R-OOC-C(-CN)=),3-(HN=)ISOINDOLINE IN WHICH R STANDS FOR AN ALKYL, ISOALKYL OR ALKENYL RADICAL WITH 7 TO 20 CARBON ATOMS.
Inventors
- 👤 Heinrich Vollmann
- 👤 Walther Lohmar
- 👤 Heinrich Leister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:07
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/066; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10N; C10N2040/00; C10N2040/08; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2050/00; C10N2050/10
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |