US2610948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating compositions
Assignee: Standard Oil Development Co
•
Filing: 1950-03-23
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Granted: 1952-09-16
•
Expires: 1970-03-23
Abstract
No abstract record available.
Inventors
- 👤 Arnold J Morway
- 👤 Jr William C Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:01
CPC Classifications
C; C10; C10M; C10M143/00; C10M145/00; C10M145/02; C10M3/00; C10M2203/00; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/04; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/108; C10M2209/109; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/08; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A LUBRICATING COMPOSITION WHICH COMPRISES A SYNTHETIC LUBRICATING OIL HAVING A VISCOSITY AT 210* F. WITHIN THE RANGE OF FROM ABOUT 30 TO ABOUT 60 SAYBOLT UNIVERSAL SECONDS AND A FLASH POINT ABOVE ABOUT 250* F. HAVING COMBINED THEREIN FROM ABOUT 0.5% TO 20.0% BY WEIGHT OF A VISCOSITY INDEX IMPROVER SELECTED FROM THE CLASS CONSISTING OF POLYMERS OF ACRYLATE ESTERS, POLYMERS OF METHACRYLATE ESTERS, POLYMERS OF ISOBUTYLENE AND COPOLYMERS OF STYRENE AND ISOBUTYLENE, SAID SYNTHETIC LUBRICATING OIL BEING A RESIDUE REMAINING AFTER DISTILLATION AT A TEMPERATURE WITHIN A RANGE OF ABOUT 542* F. TO ABOUT 740* F. OF THE MIXTURE OF PRODUCTS OBTAINED BY SUBJECTING MONOOLEFINS TO THE ACTION OF CARBON MOBOXIDE AND HYDROGEN IN THE OXO PROCESS.
Claim 2
Dependent Claim
119 words
A LUBRICATING COMPOSITION WHICH COMPRISES A SYNTHETIC LUBRICATING OIL HAVING A VISCOSITY AT 210* F. WITHIN THE RANGE OF FROM ABOUT 30 TO ABOUT 60 SAYBOLT UNIVERSAL SECONDS AND A FLASH POINT ABOVE ABOUT 250* F. HAVING COMBINED THEREIN FROM ABOUT 0.5% TO 20.0% BY WEIGHT OF A VISCOSITY INDEX IMPROVER SELECTED FROM THE CLASS CONSISTING OF POLYMERS OF ACRYLATE ESTERS, POLYMERS OF METHACRYLATE ESTERS, POLYMERS OF ISOBUTYLENE AND COPOLYMERS OF STYRENE AND ISOBUTYLENE, SAID SYNTHETIC LUBRICATING OIL BEING A RESIDUE REMAINING AFTER DISTILLATION AT A TEMPERATURE WITHIN A RANGE OF ABOUT 542* F. TO ABOUT 740* F. OF THE MIXTURE OF PRODUCTS OBTAINED BY SUBJECTING MONOOLEFINS TO THE ACTION OF CARBON MOBOXIDE AND HYDROGEN IN THE OXO PROCESS.
References Cited (Backward Citations)
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US2415102A
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US2481278A
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US2489300A
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US2512771A
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US2499984A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |