US3306856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aryl keto acid pour-point depressants and dispersants for oleaginous compositions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1964-07-31
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Granted: 1967-02-28
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Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 Hu Shih-En
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:27
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/19; C10L1/191; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225; C10L1/228; C10L1/2283; C10M2201/00; C10M2201/06; C10M2201/062; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/109; C10M2209/11; C10M2211/00; C10M2211/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/045; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/135; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
108 words
A METHOD FOR PREPARING AN OIL-SOLUBLE ADDITIVE FOR AN OLEAGINOUS COMPOSITION WHICH COMPRISES REACTING FROM 1 TO 2 MOLES OF AN ALKARYL KETO ACID WITH 1 MOLE OF A POLYHYDROXY COMPOUND UNDER CONDITIONS FORMING AN ESTER OF SAID ACID, SAID POLYHYDROXY COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF: POLYHYDRIC ALCOHOLS HAVING FROM 2 TO 10 CARBON ATOMS AND FROM 2 TO 6 HYDROXY GROUPS; POLYALKYLENE GLYCOLS OF FROM 100 TO 600 MOLECULAR WEIGHT; AND POLYHYDROXY ALKYL AMINES HAVING FROM 5 TO ABOUT 30 CARBON ATOMS, FROM 2 TO 6 HYDROXY GROUPS AND FROM 1 TO 4 TERTIARY AMINO GROUPS, SAID ARYL KETO ACID HAVING THE GENERAL FORMULA:
Claim 2
Independent Claim
108 words
A METHOD FOR PREPARING AN OIL-SOLUBLE ADDITIVE FOR AN OLEAGINOUS COMPOSITION WHICH COMPRISES REACTING FROM 1 TO 2 MOLES OF AN ALKARYL KETO ACID WITH 1 MOLE OF A POLYHYDROXY COMPOUND UNDER CONDITIONS FORMING AN ESTER OF SAID ACID, SAID POLYHYDROXY COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF: POLYHYDRIC ALCOHOLS HAVING FROM 2 TO 10 CARBON ATOMS AND FROM 2 TO 6 HYDROXY GROUPS; POLYALKYLENE GLYCOLS OF FROM 100 TO 600 MOLECULAR WEIGHT; AND POLYHYDROXY ALKYL AMINES HAVING FROM 5 TO ABOUT 30 CARBON ATOMS, FROM 2 TO 6 HYDROXY GROUPS AND FROM 1 TO 4 TERTIARY AMINO GROUPS, SAID ARYL KETO ACID HAVING THE GENERAL FORMULA:
Claim 3
Dependent Claim
46 words
AN OLEAGINOUS COMPOSITION COMPRISING A MAJOR PROPORTION OF AN OIL SELECTED FROM THE CLASS CONSISTING OF GASOLINE, MIDDLE DISTILLATE FUELS, MINERAL LUBRICATING OILS AND SYNTHETIC LUBRICATING OILS TO WHICH HAS BEEN ADDED FROM ABOUT 0.002 TO ABOUT 10 WEIGHT PERCENT OF THE PRODUCT OF CLAIM 1.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |