Patent US2741649A successfully refreshed from Google Patents.
US2741649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil and process for forming the same
Assignee: California Research LLC
•
Filing: 1953-02-19
•
Granted: 1956-04-10
•
Expires: 1973-02-19
Abstract
No abstract record available.
Inventors
- 👤 Andrew D Abbott
- 👤 Lloyd F Brooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:35
CPC Classifications
C; C10; C10M; C10M109/00; C10M109/02; C10M2201/00; C10M2201/06; C10M2201/062; C10M2201/10; C10M2201/105; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/026; C10M2205/028; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/102; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/047; C10M2223/06; C10M2223/065; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A PROCESS FOR CONVERTING A NORMALLY SOLID HYDROCARBON WAX TO A LUBRICATING OIL, THE STEPS COMPRISING REACTING SAID WAX WITH AN OLEFIN OF FROM 2. TO 10 CARBON ATOMS IN THE PRESENCE OF A HYDROCARBYL HALIDE CATALYST AT A TEMPERATURE BETWEEN 400 AND 700* F. AND AT A PRESSURE BETWEEN 100 AND 15,000 P. S. I. G,; AND SEPARATING FROM
Claim 2
Dependent Claim
61 words
IN A PROCESS FOR CONVERTING A NORMALLY SOLID HYDROCARBON WAX TO A LUBRICATING OIL, THE STEPS COMPRISING REACTING SAID WAX WITH AN OLEFIN OF FROM 2. TO 10 CARBON ATOMS IN THE PRESENCE OF A HYDROCARBYL HALIDE CATALYST AT A TEMPERATURE BETWEEN 400 AND 700* F. AND AT A PRESSURE BETWEEN 100 AND 15,000 P. S. I. G,; AND SEPARATING FROM
References Cited (Backward Citations)
US2063623A
Cited
US2410107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |