US3031402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant composition
Assignee: Sinclair Refining Co
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Filing: 1959-07-27
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Granted: 1962-04-24
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Expires: 1979-07-27
Abstract
No abstract record available.
Inventors
- 👤 John W Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:02
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/30; C10M2207/304; C10M2207/40; C10M2207/402; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2040/00; C10N2040/135; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
AN OLEAGINOUS LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF A BASE OIL OF LUBRICATING VISCOSITY AND AN AMOUNT SUFFICIENT TO GIVE IMPROVED ANTI-OXIDANT PROPERTIES TO THE COMPOSITION OF AN OIL-COMPATIBLE, N-ALKYL, BIS(HYDROXY PHENYL) CARBOXYLIC ACID AMIDE, WHEREIN THE CARBOXYLIC ACID RADICAL IS IN AN ALIPHATIC CHAIN OF 4-8 CARBON ATOMS.
Claim 2
Dependent Claim
48 words
AN OLEAGINOUS LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF A BASE OIL OF LUBRICATING VISCOSITY AND AN AMOUNT SUFFICIENT TO GIVE IMPROVED ANTI-OXIDANT PROPERTIES TO THE COMPOSITION OF AN OIL-COMPATIBLE, N-ALKYL, BIS(HYDROXY PHENYL) CARBOXYLIC ACID AMIDE, WHEREIN THE CARBOXYLIC ACID RADICAL IS IN AN ALIPHATIC CHAIN OF 4-8 CARBON ATOMS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |