Patent US2939841A successfully refreshed from Google Patents.
US2939841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High v. i. detergent lubricating oils
Assignee: Union Oil Company of California
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Filing: 1956-06-15
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Granted: 1960-06-07
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Expires: 1976-06-15
Abstract
No abstract record available.
Inventors
- 👤 John P Buckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:52
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/123; C10M159/126; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/08; C10M2223/12; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/14; C10N2010/16; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A COMPOSITION OF MATTER ADAPTED FOR ADDITION TO MINERAL LUBRICATING OIL TO IMPART IMPROVED V.I. AND DETERGENT CHARACTERISTICS TO SAID OIL COMPOSITION COMPRISING A MINERAL OIL SOLUTION OF AN OIL-SOLUBLE METAL SALT OF THE ACIDIC REACTION PRODUCT OBTAINED BY REACTING AN ALIPHATIC HYDROCARBON POLYMERIC MATERIAL HAVING A MOLECULAR WEIGHT BETWEEN 5000 AND 200,000 AND SELECTED FROM THE CLASS CONSISTING OF THE OLEFIN POLYMERS, POLYPROPYLENE AND POLYBUTYLENE, AND THE COPOLYMERS OF PROPYLENE-BUTADIENE, PROPYLENE-ISOPRENE, BUTYLENE-BUTADIENE AND BUTYLENE-ISOPRENE WITH BETWEEN ABOUT 10% AND ABOUT 30% BY WEIGHT OF PHOSPHORUS TRICHLORIDE IN THE PRESENCE OF GASEOUS OXYGEN AT A TEMPERATURE BETWEEN ABOUT 10* C. AND ABOUT 100* C. AND HYDROLYZING THE RESULTING PRODUCT, SAID COMPOSITION CONTAINING GREATER THAN ABOUT 15% BY WEIGHT OF SAID OIL-SOLUBLE METAL SALT.
Claim 2
Dependent Claim
123 words
A COMPOSITION OF MATTER ADAPTED FOR ADDITION TO MINERAL LUBRICATING OIL TO IMPART IMPROVED V.I. AND DETERGENT CHARACTERISTICS TO SAID OIL COMPOSITION COMPRISING A MINERAL OIL SOLUTION OF AN OIL-SOLUBLE METAL SALT OF THE ACIDIC REACTION PRODUCT OBTAINED BY REACTING AN ALIPHATIC HYDROCARBON POLYMERIC MATERIAL HAVING A MOLECULAR WEIGHT BETWEEN 5000 AND 200,000 AND SELECTED FROM THE CLASS CONSISTING OF THE OLEFIN POLYMERS, POLYPROPYLENE AND POLYBUTYLENE, AND THE COPOLYMERS OF PROPYLENE-BUTADIENE, PROPYLENE-ISOPRENE, BUTYLENE-BUTADIENE AND BUTYLENE-ISOPRENE WITH BETWEEN ABOUT 10% AND ABOUT 30% BY WEIGHT OF PHOSPHORUS TRICHLORIDE IN THE PRESENCE OF GASEOUS OXYGEN AT A TEMPERATURE BETWEEN ABOUT 10* C. AND ABOUT 100* C. AND HYDROLYZING THE RESULTING PRODUCT, SAID COMPOSITION CONTAINING GREATER THAN ABOUT 15% BY WEIGHT OF SAID OIL-SOLUBLE METAL SALT.
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) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |