Patent US3591598A successfully refreshed from Google Patents.
US3591598A
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Certain condensation products derived from mannich bases
Assignee: Standard Oil Co
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Filing: 1968-11-08
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Granted: 1971-07-06
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Expires: 1988-11-08
Abstract
Abstract THIS INVENTION CONCERNS HE CONDENSATIO PRODUCT OF AN ALDEHYDE REACTANT HVING MORE THAN ONE CARBON ATOM AND/OR KETONE REACTANT, FORMALDEHYDE, AN ALKYLENE POLYAMINE, AND AN ALKYL-SUBSTITUTED PHENOL AND/OR A METHYLSUBSTITUTED AMINO PYRIDINE. THESE COMPOSITIONS CAN BE USED AS ASHLESS ALKALINE ADDITIVES FOR MOTOR OILS.
Inventors
- 👤 Thornton P Traise
- 👤 Roger W Watson
- 👤 Randel Q Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:45
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74; C10; C10M; C10M159/00; C10M159/12; C10M159/16; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/14; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/04; C10M2217/046; 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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |