US3194764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blended ester lubricant
Assignee: Sinclair Research Inc
•
Filing: 1959-02-13
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Granted: 1965-07-13
•
Expires: 1979-02-13
Abstract
No abstract record available.
Inventors
- 👤 Elwin B Ovist
- 👤 Kjonaas Manley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:13
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07C; C07C67/00; C07C67/08; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/30; C10M2207/304; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/11; C10M2209/112; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/084; C10M2219/10; C10M2219/104; C10M2219/108; C10M2221/00; C10M2221/04; C10M2221/043; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A BLENDED SYNTHETIC LUBRICANT CHARACTERIZED BY A KINEMATIC VISCOSITY OF AT LEAST ABOUT 7.5 CENTISTOKES AT 210*F. AND NOT EXCEEDING ABOUT 13,000 CENTISTOKES AT -40*F., CONSISTING ESSENTIALLY OF ABOUT 15 TO 30 PERCENT OF A DIESTER, OF LUBRICATING VISCOSITY, OF A C8 TO C10 PRIMARY BRANCHED CHAIN MONOHYDRIC ALCOHOL AND A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF SEBACIC AND AZELAIC ACIDS, AND ABOUT 70 TO 85 PERCENT OF A COMPLEX ESTER PRODUCED BY THE STEPS OF ESTERIFYING IN THE PRESENCE OF A CATALYTIC AMOUNT OF A TITANIUM COMPOUND, NEOPENTYL GLYCOL, A C8 TO C10 PRIMARY BRANCHED CHAIN MONOHYDRIC ALCOHOL AND A DICARBOXYLIC ACID COMPONENT CONSISTING ESSENTIALLY OF AZELAIC ACID CONTAINING UP TO ABOUT 90% OF SEBACIC ACID AS THE ESSENTIAL ESTERIFYING CONSTITUENTS IN THE APPROXIMATE PROPORTIONS OF ONE MOLE OF GLYCOL TO TWO MOLES OF ALCOHOL TO TWO MOLES OF ACID AND STRIPPING THE REACTION PRODUC T AT A TEMPERATURE ABOVE ABOUT 175*C. AND AT AN ABSOLUTE PRESSURE OF UP TO ABOUT 25 MM. HG.
Claim 2
Dependent Claim
167 words
A BLENDED SYNTHETIC LUBRICANT CHARACTERIZED BY A KINEMATIC VISCOSITY OF AT LEAST ABOUT 7.5 CENTISTOKES AT 210*F. AND NOT EXCEEDING ABOUT 13,000 CENTISTOKES AT -40*F., CONSISTING ESSENTIALLY OF ABOUT 15 TO 30 PERCENT OF A DIESTER, OF LUBRICATING VISCOSITY, OF A C8 TO C10 PRIMARY BRANCHED CHAIN MONOHYDRIC ALCOHOL AND A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF SEBACIC AND AZELAIC ACIDS, AND ABOUT 70 TO 85 PERCENT OF A COMPLEX ESTER PRODUCED BY THE STEPS OF ESTERIFYING IN THE PRESENCE OF A CATALYTIC AMOUNT OF A TITANIUM COMPOUND, NEOPENTYL GLYCOL, A C8 TO C10 PRIMARY BRANCHED CHAIN MONOHYDRIC ALCOHOL AND A DICARBOXYLIC ACID COMPONENT CONSISTING ESSENTIALLY OF AZELAIC ACID CONTAINING UP TO ABOUT 90% OF SEBACIC ACID AS THE ESSENTIAL ESTERIFYING CONSTITUENTS IN THE APPROXIMATE PROPORTIONS OF ONE MOLE OF GLYCOL TO TWO MOLES OF ALCOHOL TO TWO MOLES OF ACID AND STRIPPING THE REACTION PRODUC T AT A TEMPERATURE ABOVE ABOUT 175*C. AND AT AN ABSOLUTE PRESSURE OF UP TO ABOUT 25 MM. HG.
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |