US3647692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrogen-containing reaction products and their use in lubricating oils and fuels
Assignee: Standard Oil Co
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Filing: 1969-11-05
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Granted: 1972-03-07
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Expires: 1989-11-05
Abstract
Abstract OIL-SOLUBLE COMPOUNDS AE PAREPARED BY HEATING A MIXTURE COMPRISING (A) A REDUCED NITRO-NITRITO ALKANE, CONTAINING AT LEAST TEN CARBON ATOMS, (B) AN ORGANIC POLYBASIC ALIPHATIC OR AROMATIC ACID OR ANHYDRIDE, OR LONG CHAIN ALKENYL SUBSTITUTED DERIVATIVES THEREOF, AND (C) A POLYALKYLENE AMINE, IN THE MOLAR RATIO OF FROM ABOUT 1:1:0 TO ABOUT 1:1:0.5, RESPECTIVELY; COMPOUNDS SO FORMED ARE USEFUL ADDITIVES IN OLEAGINOUS COMPOSITIONS.
Inventors
- 👤 Richard J Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:28
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C10M; C10M133/00; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; 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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |