US3265622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants containing copolymers of 4-methyl-1-pentene
Assignee: Shell USA Inc
•
Filing: 1961-10-31
•
Granted: 1966-08-09
•
Expires: 1981-10-31
Abstract
No abstract record available.
Inventors
- 👤 William S Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:31
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F210/00; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/08; C10M2219/082; C10M2219/083; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/047; C10N; C10N2040/00; C10N2040/08; C10N2040/14; C10N2040/16; C10N2040/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A MINERAL LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM 0.01% PERCENT 4-METHYL-1-PENTENE IN THE PRESENCE OF A LIQUID HYDROCARBON SOILVENT, BETWEEN -20*C. AND 60*C., AT TO 5% OF AN OIL-SOLUBLE COPOLYMER OF ETHYLENE AND 4ATMOSPHERIC PRESSURE, AND A CATALYST MIXTURE SELECTED FROM THE GROUP CONSISTING OF (1) A MIXTURE OF VANADIUM CHLORIDE AND TRIALKYL ALUMINUM AND (2) A MIXTURE OF VANADIUM OXYCHLORIDE AND TRIALKYL ALUMINUM, SAID COPOLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM 25,000 TO 500,000.
Claim 2
Dependent Claim
85 words
A MINERAL LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM 0.01% PERCENT 4-METHYL-1-PENTENE IN THE PRESENCE OF A LIQUID HYDROCARBON SOILVENT, BETWEEN -20*C. AND 60*C., AT TO 5% OF AN OIL-SOLUBLE COPOLYMER OF ETHYLENE AND 4ATMOSPHERIC PRESSURE, AND A CATALYST MIXTURE SELECTED FROM THE GROUP CONSISTING OF (1) A MIXTURE OF VANADIUM CHLORIDE AND TRIALKYL ALUMINUM AND (2) A MIXTURE OF VANADIUM OXYCHLORIDE AND TRIALKYL ALUMINUM, SAID COPOLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE OF FROM 25,000 TO 500,000.
References Cited (Backward Citations)
US2327705A
Cited
US2692257A
Cited
US2746925A
Cited
GB804085A
Cited
BE553655A
Cited
US2901432A
Cited
US3037008A
Cited
US3010949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |