US2620308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions for lubrication
Assignee: California Research LLC
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Filing: 1950-12-16
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Granted: 1952-12-02
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Expires: 1970-12-16
Abstract
No abstract record available.
Inventors
- 👤 William T Stewart
- 👤 Goldschmidt Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:01
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2209/107; C10M2209/108; C10M2209/109; C10N; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A BLEND OF HYDROCARBON OIL AND POLYALKYLENE GLYCOL POLYMERIC MATERIAL OF LUBRICATING OIL VISCOSITY IN AN AMOUNT, BY VOLUME, OF ABOUT ONE-FOURTH TO ABOUT FOUR-FOLD THE AMOUNT OF SAID HYDROCARBON OIL, AND A MINOR AMOUNT, SUFFICIENT SUBSTANTIALLY TO LOWER THE MISCIBILITY TEMPERATURE OF SAID BLEND, OF AN ALKYLATED MONOHYDRIC PHENOL HAVING AT LEAST FIVE ALIPHATIC CARBON ATOMS IN THE MOLECULE, SAID ALKYLATED MONOHYDRIC PHENOL BEING FREE OF POLAR SUBSTITUENTS, AND BEING SOLUBLE IN THE BLEND AT THE MISCIBILITY TEMPERATURE OF THE BLEND.
Claim 2
Dependent Claim
90 words
LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A BLEND OF HYDROCARBON OIL AND POLYALKYLENE GLYCOL POLYMERIC MATERIAL OF LUBRICATING OIL VISCOSITY IN AN AMOUNT, BY VOLUME, OF ABOUT ONE-FOURTH TO ABOUT FOUR-FOLD THE AMOUNT OF SAID HYDROCARBON OIL, AND A MINOR AMOUNT, SUFFICIENT SUBSTANTIALLY TO LOWER THE MISCIBILITY TEMPERATURE OF SAID BLEND, OF AN ALKYLATED MONOHYDRIC PHENOL HAVING AT LEAST FIVE ALIPHATIC CARBON ATOMS IN THE MOLECULE, SAID ALKYLATED MONOHYDRIC PHENOL BEING FREE OF POLAR SUBSTITUENTS, AND BEING SOLUBLE IN THE BLEND AT THE MISCIBILITY TEMPERATURE OF THE BLEND.
References Cited (Backward Citations)
US2481278A
Cited
US2510540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |