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Patent US2991244A successfully refreshed from Google Patents.
US2991244A
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Lubricating compositions containing phosphonic acid salts
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-12-31
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Granted: 1961-07-04
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Expires: 1977-12-31
Abstract
No abstract record available.
Inventors
- 👤 Warren C Pattenden
- 👤 Richard J Plumstead
- 👤 Samuel B Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:59
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2203/00; C10M2203/10; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/124; C10M2207/125; C10M2207/128; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/283; C10M2207/287; C10M2207/289; C10M2207/30; C10M2207/32; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/06; C10M2223/065; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND ABOUT 0.5 TO 30 WT. PERCENT OF A NEUTRAL METAL SALT OF ETHANE PHOSPHONIC ACID, SAID METAL BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS.
Claim 2
Dependent Claim
43 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND ABOUT 0.5 TO 30 WT. PERCENT OF A NEUTRAL METAL SALT OF ETHANE PHOSPHONIC ACID, SAID METAL BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |