US3801507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfurized metal phenates
Assignee: Chevron USA Inc
•
Filing: 1972-08-18
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Granted: 1974-04-02
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Expires: 1992-08-18
Abstract
Abstract A NOVEL MULTIFUNCTIONAL LUBE OIL ADDITIVE IS PROVIDED AND COMPRISING THE REACTION PRODUCT OF AN ALKYL PHENOL HAVING FROM 8 TO 35 CARBONS IN THE ALKYL GROUP, SULFUR AND AN ALKALINE EARTH METAL OXIDE OR HYDROXIDE. THE REACTION IS PERFORMED IN A TWO STEP PROCESS IN THE PRESENCE OF A MUTUAL SOLVENT WHEREBY THE SULFURIZED METAL PHENATE PRODUCED HAS A SULFUR TO METAL ATOM RATIO BETWEEN ABOUT 1 AND 2.
Inventors
- 👤 Y Hendrickson
- 👤 J King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:05
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/22; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/04; C10M2207/28; C10M2207/282; C10M2207/287; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2209/108; C10M2215/00; C10M2215/086; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2221/00; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10M2229/05; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 0
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |