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Patent US2913415A successfully refreshed from Google Patents.
US2913415A
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Method of inhibiting squawking in mineral oil transmission fluids
Assignee: Shell Development Co
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Filing: 1956-01-30
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Granted: 1959-11-17
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Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 Howard E Schmitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:10
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/083; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/06; C10M2223/061; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/08; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS OF INHIBITING SQUAWKING CHATTERING AND SQUEALING IN POWER TRANSMISSION OPERATED ON MINERAL LUBRICATING OIL BY ADDITION THERETO OF FROM ABOUT 0.001% TO ABOUT 1% BY WEIGHT OF AN OIL-SOLUBLE MONO-ALKANE% PHOSPHINIC ACID, SAID ALKANE RADICL HAVING FROM 4 TO 20 CARBON ATOMSA AND FROM ABOUT 0.001% OF ABOUT 1% OF A FATTY ACID SELECTED FROM THE GROUP CONSISTING OF LAURIC ACID, PALMITIC ACID, AND STEARIC ACID.
Claim 2
Dependent Claim
68 words
A PROCESS OF INHIBITING SQUAWKING CHATTERING AND SQUEALING IN POWER TRANSMISSION OPERATED ON MINERAL LUBRICATING OIL BY ADDITION THERETO OF FROM ABOUT 0.001% TO ABOUT 1% BY WEIGHT OF AN OIL-SOLUBLE MONO-ALKANE% PHOSPHINIC ACID, SAID ALKANE RADICL HAVING FROM 4 TO 20 CARBON ATOMSA AND FROM ABOUT 0.001% OF ABOUT 1% OF A FATTY ACID SELECTED FROM THE GROUP CONSISTING OF LAURIC ACID, PALMITIC ACID, AND STEARIC ACID.
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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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |