Patent US2748170A successfully refreshed from Google Patents.
US2748170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic lubricant product of polymerization of a vinyl ether with an olefin
Assignee: California Research LLC
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Filing: 1952-09-26
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Granted: 1956-05-29
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Expires: 1972-09-26
Abstract
No abstract record available.
Inventors
- 👤 Jr George J Benoit
- 👤 Andrew D Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:52
CPC Classifications
C; C10; C10M; C10M3/00; C10M2205/00; C10M2205/14; C10M2205/16; C10M2205/17; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/28; C10M2207/282; C10M2207/287; C10M2207/289; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/107; C10M2209/108; C10M2209/109; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/026; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A LUBRICANT COMPOSITION COMPRISING A REACTION PRODUCT OBTAINED BY REACTING ETHYLENE WITH VINYL BETYL ETHER AT A TEMPERATURE OF ABOUT 150* C. IN THE PRESENCE OF A FREE RADICAL INITIATING CATALYST, SAID REACTANTS BEING EMPLOYED IN THE RATIO OF FROM ABOUT 0.1 TO 0.5 MOLE OF THE ETHER PER MOLE OF ETHYLENE, AND DISTILLING OFF FROM THE RESULTING REACTION MIXTURE AT LEAST THAT PORTION THEREOF BOILING BELOW ABOUT 150* C. AT 5 MM. HG, LEAVING AS RESIDUE THE DESIRED LUBRICANT COMPOSITION HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM ABOUT 400 TO 700.
Claim 2
Dependent Claim
92 words
A LUBRICANT COMPOSITION COMPRISING A REACTION PRODUCT OBTAINED BY REACTING ETHYLENE WITH VINYL BETYL ETHER AT A TEMPERATURE OF ABOUT 150* C. IN THE PRESENCE OF A FREE RADICAL INITIATING CATALYST, SAID REACTANTS BEING EMPLOYED IN THE RATIO OF FROM ABOUT 0.1 TO 0.5 MOLE OF THE ETHER PER MOLE OF ETHYLENE, AND DISTILLING OFF FROM THE RESULTING REACTION MIXTURE AT LEAST THAT PORTION THEREOF BOILING BELOW ABOUT 150* C. AT 5 MM. HG, LEAVING AS RESIDUE THE DESIRED LUBRICANT COMPOSITION HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM ABOUT 400 TO 700.
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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |