US3300409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants containing metal salts of mixed phosphorothioic and phosphinothioic acids
Assignee: Lubrizol Corp
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Filing: 1964-08-03
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Granted: 1967-01-24
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Expires: 1984-08-03
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C10; C10M; C10M137/00; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2207/024; C10M2207/025; C10M2207/026; C10M2207/027; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/287; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/10; C10M2209/101; C10M2209/103; C10M2209/105; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/061; C10M2223/065; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/08; C10N2040/12; C10N2040/13; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/20; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A LUBRICANT COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND A MINOR PROPORTION, SUFFICIENT TO INHIBIT OXIDATION THEREOF, OF A METAL SALT OF A PHOSPHORUS ACID MIXTURE COMPRISING (A) A DIHYDROCARBON PHOSPHOROTHIOIC ACID HAVING AT LEAST 3 ALIPHATIC CARBON ATOMS IN EACH HYDROCARBON RADICAL AND (B) A DIARYL PHOSPHINOTHIOIC ACID WHEREIN THE ARYL GROUP IS SELECTED FROM THE CLASS CONSISTING OF PHENYL, HALOPHENYL, AND ALKYLPHENYL HAVING UP TO ABOUT 6 CARBON ATOMS IN THE ALKYL SUBSTITUENT; WHEREIN THE MOLAR RATIO OF (A) TO (B) IS WITHIN THE RANGE OF FROM ABOUT 1:2 TO 1:0.05 AND THE RATIO OF ALIPHATIC CARBON ATOMS TO PHOSPHORUS ATOMS IS AT LEAST ABOUT 6.
Claim 2
Dependent Claim
111 words
A LUBRICANT COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND A MINOR PROPORTION, SUFFICIENT TO INHIBIT OXIDATION THEREOF, OF A METAL SALT OF A PHOSPHORUS ACID MIXTURE COMPRISING (A) A DIHYDROCARBON PHOSPHOROTHIOIC ACID HAVING AT LEAST 3 ALIPHATIC CARBON ATOMS IN EACH HYDROCARBON RADICAL AND (B) A DIARYL PHOSPHINOTHIOIC ACID WHEREIN THE ARYL GROUP IS SELECTED FROM THE CLASS CONSISTING OF PHENYL, HALOPHENYL, AND ALKYLPHENYL HAVING UP TO ABOUT 6 CARBON ATOMS IN THE ALKYL SUBSTITUENT; WHEREIN THE MOLAR RATIO OF (A) TO (B) IS WITHIN THE RANGE OF FROM ABOUT 1:2 TO 1:0.05 AND THE RATIO OF ALIPHATIC CARBON ATOMS TO PHOSPHORUS ATOMS IS AT LEAST ABOUT 6.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |