US3264216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multifunctional viscosity index improvers for lubricating oils
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1962-09-26
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Granted: 1966-08-02
•
Expires: 1982-09-26
Abstract
No abstract record available.
Inventors
- 👤 Rockett Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:50
CPC Classifications
C; C08; C08F; C08F218/00; C08F218/02; C08F218/04; C08F218/10; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/06; C10M2201/062; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/11; C10M2219/00; C10M2219/04; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A HYDROCARBON OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A HYDROCARBON OIL AND FROM ABOUT 0.002 TO ABOUT 10 WT. PERCENT OF AN ASH-FREE, OIL-SOLUBLE MULTIFUNCTIONAL ADDITIVE HAVING V.I. IMPROVING AND DETERGENCY PROPERTIES COMPRISING A COPOLYMERIZATION PRODUCT HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF ABOUT 5,000 TO ABOUT 600,000, OF ABOUT 70 TO 80 MOLE PERCENT OF VINYL ALCOHOL ESTER OF C2 TO C4 FATTY ACID, ABOUT 20 TO 30 MOLE PERCENT OF DIESTER OF ALPHA, BETA-UNSATURATED C4 DICARBOXYLIC ACID AND C8 TO C20 SATURATED ALIPHATIC ALCOHOL, AND ABOUT 2 TO 5 MOLE PERCENT OF ETHER SELECTED FROM THE GROUP CONSISTING OF ALKYLENE ETHERS OF THE FORMULA:
Claim 2
Dependent Claim
108 words
A HYDROCARBON OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A HYDROCARBON OIL AND FROM ABOUT 0.002 TO ABOUT 10 WT. PERCENT OF AN ASH-FREE, OIL-SOLUBLE MULTIFUNCTIONAL ADDITIVE HAVING V.I. IMPROVING AND DETERGENCY PROPERTIES COMPRISING A COPOLYMERIZATION PRODUCT HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF ABOUT 5,000 TO ABOUT 600,000, OF ABOUT 70 TO 80 MOLE PERCENT OF VINYL ALCOHOL ESTER OF C2 TO C4 FATTY ACID, ABOUT 20 TO 30 MOLE PERCENT OF DIESTER OF ALPHA, BETA-UNSATURATED C4 DICARBOXYLIC ACID AND C8 TO C20 SATURATED ALIPHATIC ALCOHOL, AND ABOUT 2 TO 5 MOLE PERCENT OF ETHER SELECTED FROM THE GROUP CONSISTING OF ALKYLENE ETHERS OF THE FORMULA:
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |