Patent US3259579A successfully refreshed from Google Patents.
US3259579A
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Esters of dithiophosphoric acids and lubricating oil compositions containing same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-11-29
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Granted: 1966-07-05
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Expires: 1974-11-29
Abstract
No abstract record available.
Inventors
- 👤 Dilworth T Rogers
- 👤 William W Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:45
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M2203/00; C10M2203/10; C10M2203/108; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/027; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/30; C10M2207/302; C10M2207/304; C10M2207/32; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/109; C10M2209/11; C10M2209/111; C10M2209/112; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/04; C10M2213/06; C10M2213/062; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/043; C10M2223/045; C10M2223/047; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/02; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/02; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/08; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/20; C10N2040/22; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE PRODUCT OBTAINED BY REACTING SEPARATELY AND IN A SEQUENCE ONE MOLE OF A COMPOUND I WITH AT LEAST THE FIRST MEMBER OF A SERIES CONSISTING OF (1) ABOUT 0.25 MOLE OF A COMPOUND II, (2) ABOUT 0.5 TO 1.5 MOLES OF A COMPOUND III; (3) ABOUT 0.125 MOLE OF COMPOUND II AND (4) ABOUT 0.25 TO 0.75 MOLE OF COMPOUND III AT A TEMPERATURE IN THE RANGE OF ABOUT 100* TO 300*F.; WHEREIN COMPOUND I IS THE REACTION PRODUCT OF A DITHIOPHOSPHORIC ACID OF THE FORMULA
Claim 2
Dependent Claim
61 words
A LUBRICATING COMPOSITION CONSISTING ESSENTIALLY OF A MINERAL LUBRICATING OIL AND FROM 1 TO 10% BY WEIGHT OF A PHOSPHOROUS- AND SULFUR-CONTAINING MATERIAL PREPARED BY THE PROCESS WHICH COMPRISES THE REACTION OF A METAL SALT, WHEREIN THE METAL IS SELECTED FROM THE CLASS CONSISTING OF ALKALI AND ALKALINE EARTH METALS AND ZINC, OF A PHOSPHORODITHIOIC ACID HAVING THE STRUCTURE SP (RO)2PSSH
References Cited (Backward Citations)
DE18787C
Cited
US2157452A
Cited
US2063629A
Cited
US2133310A
Cited
US2178610A
Cited
US2266514A
Cited
US2372244A
Cited
US2531129A
Cited
US2614988A
Cited
US2783203A
Cited
US2783204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |