US3725277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant compositions
Assignee: Ethyl Corp
•
Filing: 1968-05-31
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Granted: 1973-04-03
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Expires: 1988-05-31
Abstract
Abstract REACTION PRODUCTS OF HIGH MOLECULAR WEIGHT ALKYLPHENOLS, ALDEHYDES AND N,N-DIALKYL, HYDROXLAKYL OR AMINOALKYL-ALKYLENE DIAMINES ARE ASHLESS DISPERSANTS FOR LUBRICATING OILS.
Inventors
- 👤 C Worrel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:22
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/60; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C10; C10M; C10M159/00; C10M159/12; C10M159/16; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2211/00; C10M2211/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |