US3337313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pour depressant for distillate fuels
Assignee: Standard Oil Co
•
Filing: 1964-07-20
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Granted: 1967-08-22
•
Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Bruce M Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:50
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/647; H05B6/6482; H05B6/6485; C; C08; C08F; C08F8/00; C08F8/18; C08F8/20; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/20; C10L1/206; C10L1/207; H05B6/6402
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A FUEL OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF A DISTILLATE OIL AND AS AN IMPROVED POUR-POINT DEPRESSANT, A SMALL BUT EFFECTIVE AMOUNT OF AN OIL SOLUBLE CHLORINE-CONTAINING LOW MOLECULAR WEIGHT ETHYLENE POLYMER WHICH IS ESSENTIALLY FREE OF CROSSLINKING, SAID POLYMER BEING SELECTED FROM A CLASS CONSISTING OF POLYETHYLENE AND COPOLYMERS OFETHYLENE AND A MONO-OLEFINIC HYDROCARBON HAVING FROM 3-6 CARBON ATOMS, SAID COPOLYMER HAVING AT LEAST 50 MOLE PERCENT ETHYLENE, SAID CHLORINECONTAINING ETHYLENE POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 1,000 TO ABOUT 16,000 AND A CHLORINE CONTENT OF ABOUT 4 TO ABOUT 35 BY WEIGHT.
Claim 2
Dependent Claim
100 words
A FUEL OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF A DISTILLATE OIL AND AS AN IMPROVED POUR-POINT DEPRESSANT, A SMALL BUT EFFECTIVE AMOUNT OF AN OIL SOLUBLE CHLORINE-CONTAINING LOW MOLECULAR WEIGHT ETHYLENE POLYMER WHICH IS ESSENTIALLY FREE OF CROSSLINKING, SAID POLYMER BEING SELECTED FROM A CLASS CONSISTING OF POLYETHYLENE AND COPOLYMERS OFETHYLENE AND A MONO-OLEFINIC HYDROCARBON HAVING FROM 3-6 CARBON ATOMS, SAID COPOLYMER HAVING AT LEAST 50 MOLE PERCENT ETHYLENE, SAID CHLORINECONTAINING ETHYLENE POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 1,000 TO ABOUT 16,000 AND A CHLORINE CONTENT OF ABOUT 4 TO ABOUT 35 BY WEIGHT.
References Cited (Backward Citations)
CA646267A
Cited
US2087682A
Cited
US2121825A
Cited
US2155204A
Cited
US2225318A
Cited
US3245766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |