US2830952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear oil compositions
Assignee: Pure Oil Co
•
Filing: 1955-03-01
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Granted: 1958-04-15
•
Expires: 1975-03-01
Abstract
No abstract record available.
Inventors
- 👤 Allan A Manteuffel
- 👤 Elmer W Brennan
- 👤 Joseph B Stucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:44
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/10; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/04; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/283; C10M2207/287; C10M2207/289; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/101; C10M2209/103; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/083; C10M2223/00; C10M2223/12; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
AN EXTREME PRESSURE LUBRICANT CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL HAVING INCORPORATED THEREIN SULFURIZED AND PHOSPHORIZED FATTY OIL IN A AMOUNT SUFFICIENT TO ENHANCE THE LOAD-BEARING CAPACITY OF SAID LUBRICANT AND AN OILNESS AGENT CONSISTING OF A C1-C5 ALKYL ESTER OF A C18 MONOHYDROXY MONONASIC ALIPHATIC ACID IN AN AMOUNT SUFFICENT TO FURTHER INCREASE, IN SYNERGISTIC CO-OPERATION WITH THE SULFURIZED-PHOSPHORIZED FATTY OIL, THE LOAD-BEARING CAPACITY OF SAID LUBRICANT.
Claim 2
Dependent Claim
73 words
AN EXTREME PRESSURE LUBRICANT CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL HAVING INCORPORATED THEREIN SULFURIZED AND PHOSPHORIZED FATTY OIL IN A AMOUNT SUFFICIENT TO ENHANCE THE LOAD-BEARING CAPACITY OF SAID LUBRICANT AND AN OILNESS AGENT CONSISTING OF A C1-C5 ALKYL ESTER OF A C18 MONOHYDROXY MONONASIC ALIPHATIC ACID IN AN AMOUNT SUFFICENT TO FURTHER INCREASE, IN SYNERGISTIC CO-OPERATION WITH THE SULFURIZED-PHOSPHORIZED FATTY OIL, THE LOAD-BEARING CAPACITY OF SAID LUBRICANT.
References Cited (Backward Citations)
US2115341A
Cited
US2211231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |