US3255155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gel prevention in polymeric additives for hydrocarbon oils
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-05-15
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Granted: 1966-06-07
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Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 Joel R Siegel
- 👤 Hugh H Horowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:44
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F22/00; C08F22/10; C08F22/12; C08F22/20; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/146; C10L1/20; C10L1/206; C10L1/208; C10L1/22; C10L1/234; C10L1/236; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10M2213/00; C10M2213/04; C10M2213/06; C10M2217/00; C10M2217/02; C10M2217/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN THE PREPARATION OF AN OIL-SOLUBLE ADDITION POLYMER BY POLYMERIZATION OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF (A) ALKOXY ESTERS OBTAINED BY REACTING A HALF ESTER OF AN ETHYLENICALLY UNSATURATED C4 TO C5 DICARBOXYLIC ACID AND A C3 TO C20 SATURATED ALIPHATIC ALCOHOL WITH AN ALKYLENE C2 TO C6 OXIDE; AND (B) ALKYL CHLOROPROPYLENEOXY ESTERS HAVING THE FORMULA
Claim 2
Dependent Claim
60 words
IN THE PREPARATION OF AN OIL-SOLUBLE ADDITION POLYMER BY POLYMERIZATION OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF (A) ALKOXY ESTERS OBTAINED BY REACTING A HALF ESTER OF AN ETHYLENICALLY UNSATURATED C4 TO C5 DICARBOXYLIC ACID AND A C3 TO C20 SATURATED ALIPHATIC ALCOHOL WITH AN ALKYLENE C2 TO C6 OXIDE; AND (B) ALKYL CHLOROPROPYLENEOXY ESTERS HAVING 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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |