US3609077A
Expired / Lapsed
US
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Lubricant compositions
Assignee: Shell USA Inc
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Filing: 1968-11-18
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Granted: 1971-09-28
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Expires: 1988-11-18
Abstract
Abstract Novel haloalkyl substituted pyrophosophonic acid derivatives and their amine salts impart, inter alia, extreme-pressure properties to lubricant compositions especially to lubricant compositions used in gas-turbine engines.
Inventors
- 👤 Walter V Breitigam
- 👤 Hans Low
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:09
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/301; C07F9/38; C07F9/3895; C10M2205/00; C10M2205/02; C10M2207/00; C10M2207/04; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/109; C10M2211/00; C10M2211/02; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/06; C10M2223/061; C10M2223/063; C10M2223/065; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/05; C10M2229/051; C10N; C10N2010/00; C10N2010/04; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
25 words
The composition of claim 1 in which the lubricating oil is a synthetic lubricating oil and the compound is the amine salt of said compound.
Claim 2
Dependent Claim
34 words
The composition of claim 2 in which the compound is the amine salt of said compound and is a primary tertiary-alkyl amine and R1 and R2 are monochloromethyl and B1 and B2 are OH.
Claim 3
Dependent Claim
16 words
The composition of claim 3 in which the synthetic lubricant is a mixed C4-C12 pentaerythrityl ester.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |