US2983678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic oil containing a rare earth metal diester phosphate
Assignee: Gulf Research and Development Co
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Filing: 1958-12-31
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Granted: 1961-05-09
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Expires: 1978-12-31
Abstract
No abstract record available.
Inventors
- 👤 Jr John P Pellegrini
- 👤 Harold O Strange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:27
CPC Classifications
C; C10; C10M; C10M3/00; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2209/00; C10M2209/10; C10M2209/102; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10N; C10N2010/00; C10N2010/06; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/02; C10N2040/06; C10N2040/12; C10N2040/13; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF A SUBSTANTIALLY NEUTRAL ESTER OF A DIBASIC ACID CONTAINING 2 TO 10 CARBON ATOMS AND AN ALIPHATIC ALCOHOL CONTAINING 2 TO 18 CARBON ATOMS AND A MINOR AMOUNT, SUFFICIENT TO IMPART IMPROVED VISCOSITY CHARACTERISTICS TO SAID ESTER, OF A RARE EARTH METAL SALT OF A DIESTER OF OPHOSPHORIC ACID WHEREIN THE RARE EARTH METAL IS AN ELEMENT HAVING AN ATOMIC NUMBER FROM 57 TO 71 AND THE ESTER SUBSTITUENTS COMPRISE ONE ALIPHATIC RADICAL CONTAINING FROM 1 TO 3 CARBON ATOMS AND ONE ALIPHATIC RADICAL CONTAINING FROM 8 TO 20 CARBON ATOMS.
Claim 2
Dependent Claim
100 words
A COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF A SUBSTANTIALLY NEUTRAL ESTER OF A DIBASIC ACID CONTAINING 2 TO 10 CARBON ATOMS AND AN ALIPHATIC ALCOHOL CONTAINING 2 TO 18 CARBON ATOMS AND A MINOR AMOUNT, SUFFICIENT TO IMPART IMPROVED VISCOSITY CHARACTERISTICS TO SAID ESTER, OF A RARE EARTH METAL SALT OF A DIESTER OF OPHOSPHORIC ACID WHEREIN THE RARE EARTH METAL IS AN ELEMENT HAVING AN ATOMIC NUMBER FROM 57 TO 71 AND THE ESTER SUBSTITUENTS COMPRISE ONE ALIPHATIC RADICAL CONTAINING FROM 1 TO 3 CARBON ATOMS AND ONE ALIPHATIC RADICAL CONTAINING FROM 8 TO 20 CARBON ATOMS.
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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |