US2762774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pour depressant-detergent additive combination
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-04-21
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Granted: 1956-09-11
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Expires: 1973-04-21
Abstract
No abstract record available.
Inventors
- 👤 Alexander H Popkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:41
CPC Classifications
C; C10; C10M; C10M165/00; C10M2205/00; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/028; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/084; C10M2209/086; C10M2217/00; C10M2217/02; C10M2217/026; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/12; C10M2223/121; C10N; C10N2010/00; C10N2010/04; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A MINERAL LUBRICATING OIL OF IMPROVED POUR AND DETERENCY CHARACTERISTICS HAVING COMBINED THEREWITH IN THE RANGE OF 0.01 TO 0.1 BY WEIGHT OF A POUR POINT DEPRESSING POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF A METHACRYLATE ESTER, COPOLYMERS OF A MALEATE ESTER AND A VINYL COMPOUND AND COPOLYMERS OF A FUMARATE ESTER AND A VINYL COMPOUND, SAID ESTER PORTIONS CONTAINING IN THE RANGE OF 8 TO 18 CARBON ATOMS, AND SAID VINYL COMPOUNDS HAVING IN THE RANGE OF 4 TO 20 CARBON ATOMS, AND IN THE RANGE OF ABOUT 0.2 TO 5.0% BY WEIGHT OF A CARBON DIOXIDE-TREATED OIL-SOLUBLE ALKALINE EARTH METAL SALT OF A PHENOLIC COMPOUND, THE WEIGHT RATIO OF SAID POLYMERIC MATERIAL TO SAID TREATED METAL SALT BEING BELOW ABOUT 0.06:1.0, SAID SALT HAVING BEEN TREATED WITH CARBON DIOXIDE UNTIL AN APPRECIABLE AMOUNT OF CARBON DIOXIDE HAS BEEN ABSORBED.
Claim 2
Dependent Claim
144 words
A MINERAL LUBRICATING OIL OF IMPROVED POUR AND DETERENCY CHARACTERISTICS HAVING COMBINED THEREWITH IN THE RANGE OF 0.01 TO 0.1 BY WEIGHT OF A POUR POINT DEPRESSING POLYMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYMERS OF A METHACRYLATE ESTER, COPOLYMERS OF A MALEATE ESTER AND A VINYL COMPOUND AND COPOLYMERS OF A FUMARATE ESTER AND A VINYL COMPOUND, SAID ESTER PORTIONS CONTAINING IN THE RANGE OF 8 TO 18 CARBON ATOMS, AND SAID VINYL COMPOUNDS HAVING IN THE RANGE OF 4 TO 20 CARBON ATOMS, AND IN THE RANGE OF ABOUT 0.2 TO 5.0% BY WEIGHT OF A CARBON DIOXIDE-TREATED OIL-SOLUBLE ALKALINE EARTH METAL SALT OF A PHENOLIC COMPOUND, THE WEIGHT RATIO OF SAID POLYMERIC MATERIAL TO SAID TREATED METAL SALT BEING BELOW ABOUT 0.06:1.0, SAID SALT HAVING BEEN TREATED WITH CARBON DIOXIDE UNTIL AN APPRECIABLE AMOUNT OF CARBON DIOXIDE HAS BEEN ABSORBED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |