US3259579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of dithiophosphoric acids and lubricating oil compositions containing same
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-11-29
•
Granted: 1966-07-05
•
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 01:31
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
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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) | 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 |