US2961408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission mineral oil base fluids
Assignee: Shell USA Inc
•
Filing: 1957-06-14
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Granted: 1960-11-22
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Expires: 1977-06-14
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Havely
- 👤 Stanley R Sprague
- 👤 Lawrence C Westcott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:40
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/18; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/043; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A NOISE-FREE POWER TRANSMISSION FLUID CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF A REFINED MINERAL LUBRICATING OIL FROM ABOUT 0.05% TO ABOUT 2% OF EACH OF AN ALIPHATIC MONOCARBOXYLIC ACID HAVINNG FROM 18 TO 26 CARBON ATOMS IN THE MOLECULE AND A REACTION PRODUCT PREPARED BY REACING FROM 1 TO 5 MOLES OF AN ALIPHATIC AMINE HAVING FROM 8 TO 18 CARBON ATOMS WITH A MOL OF AN ALIPHATIC ACID PYROPHOSPHATE HAVING FROM 8 TO 18 CARBON ATOMS UNTIL THE REACTION IS SUBSTANTIALLY COMPLETED, THE REACTION BEING CARRIED OUT AT A TEMPERATURE BELOW THAT AT WHICH SUBSTANTIAL DECOMPOSITION OF THE REACTION PRODUCT OCCURS.
Claim 2
Dependent Claim
103 words
A NOISE-FREE POWER TRANSMISSION FLUID CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF A REFINED MINERAL LUBRICATING OIL FROM ABOUT 0.05% TO ABOUT 2% OF EACH OF AN ALIPHATIC MONOCARBOXYLIC ACID HAVINNG FROM 18 TO 26 CARBON ATOMS IN THE MOLECULE AND A REACTION PRODUCT PREPARED BY REACING FROM 1 TO 5 MOLES OF AN ALIPHATIC AMINE HAVING FROM 8 TO 18 CARBON ATOMS WITH A MOL OF AN ALIPHATIC ACID PYROPHOSPHATE HAVING FROM 8 TO 18 CARBON ATOMS UNTIL THE REACTION IS SUBSTANTIALLY COMPLETED, THE REACTION BEING CARRIED OUT AT A TEMPERATURE BELOW THAT AT WHICH SUBSTANTIAL DECOMPOSITION OF THE REACTION PRODUCT OCCURS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |