Patent US2863834A successfully refreshed from Google Patents.
US2863834A
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High v. i. detergent lubricating oils
Assignee: Union Oil Company of California
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Filing: 1956-06-25
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Granted: 1958-12-09
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Expires: 1976-06-25
Abstract
No abstract record available.
Inventors
- 👤 John P Buckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:39
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2225/00; C10M2225/02; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/08; C10N2010/14; C10N2010/16; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
A HIGH V. I. DETERGENT LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF MINERAL LUBRICATING OIL AND A SMALL AMOUNT SUFFICIENT TO IMPART DETERGENCY AND HIGH V. I. CHARACTERISTICS TO SAID OIL OF AN OIL-SOLUBLE METAL SALT OF THE PRODUCT OBTAINED BY REACTING AN OLEFINDIOLEFIN COPOLYMER HAVING A MOLECULAR WEIGHT BETWEEN 5,000 AND 200,000 WITH A DIALKYL HYDROGEN PHOSPHITE IN WHICH THE ALKYL GROUPS EACH CONTAIN 1 TO 4 CARBON ATOMS AT A TEMPERATURE BETWEEN 75*C. AND 225*C. IN THE PRESENCE OF AN ORGANIC PEROXIDE CATALYST AND HYDROLYZING THE REACTION PRODUCT SAID COPOLYMER BEING A COPOLYMER OF A C3 TO C4 OLEFIN WITH A C4 TO C5 DIOLEFIN.
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) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |