US2528732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction products of diesters of dithiophosphoric acid and mineral oil compositions containing the same
Assignee: ExxonMobil Oil Corp
•
Filing: 1947-01-31
•
Granted: 1950-11-07
•
Expires: 1967-01-31
Abstract
No abstract record available.
Inventors
- 👤 Frederick B Augustine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:20
CPC Classifications
C; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M137/105; C10M2203/00; C10M2203/10; C10M2203/108; C10M2207/00; C10M2207/40; C10M2207/404; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10N; C10N2040/00; C10N2040/135; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
113 words
A MINERAL LUBRICATING OIL CONTAINING A MINOR PROPORTION, SUFFICIENT TO IMPROVE THE STABILITY THEREOF AGAINST DETERIORATION BY OXIDATION, OF A REACTION PRODUCT OBTAINED FROM THE REACTION INVOLVING ABOUT ONE MOL OF A DIESTER OF DITHIOPHOSPHORIC ACID IN WHICH ALL ALKYL RADICALS IN THE DIESTER ARE SATURATED, WITH ONE MOLE OF AN ORGANIC COMPOUND CONTAINING AT LEAST ONE DOUBLE BOND IN A STRAIGHT CHAIN OF CARBON ATOMS AT LEAST FOUR CARBON ATOMS IN LENGTH, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBONS, ALCOHOLS, FATTY ACIDS AND THEIR ESTERS, AND CONTAINING NOT LESS THAN EIGHT CARBON ATOMS, AT A TEMPERATURE FALLING WITHIN THE RANGE VARYING BETWEEN ABOUT 100*C. AND ABOUT 200*C.
Claim 2
Dependent Claim
113 words
A MINERAL LUBRICATING OIL CONTAINING A MINOR PROPORTION, SUFFICIENT TO IMPROVE THE STABILITY THEREOF AGAINST DETERIORATION BY OXIDATION, OF A REACTION PRODUCT OBTAINED FROM THE REACTION INVOLVING ABOUT ONE MOL OF A DIESTER OF DITHIOPHOSPHORIC ACID IN WHICH ALL ALKYL RADICALS IN THE DIESTER ARE SATURATED, WITH ONE MOLE OF AN ORGANIC COMPOUND CONTAINING AT LEAST ONE DOUBLE BOND IN A STRAIGHT CHAIN OF CARBON ATOMS AT LEAST FOUR CARBON ATOMS IN LENGTH, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBONS, ALCOHOLS, FATTY ACIDS AND THEIR ESTERS, AND CONTAINING NOT LESS THAN EIGHT CARBON ATOMS, AT A TEMPERATURE FALLING WITHIN THE RANGE VARYING BETWEEN ABOUT 100*C. AND ABOUT 200*C.
Claim 3
Dependent Claim
94 words
A REACTION PRODUCT OBTAINED FROM THE REACTION INVOLVING ABOUT ONE MOL OF A DIESTER OF DITHIOPHOSPHORIC ACID IN WHICH ALL ALKYL RADICALS IN THE DIESTER ARE SATURATED, WITH ONE MOL OF AN ORGANIC COMPOUND CONTAINING AT LEAST ONE DOUBLE BOND IN A STRAIGHT CHAIN OF CARBON ATOMS AT LEAST FOUR CARBON ATOMS IN LENTH, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBONS, ALCOHOLS, FATTY ACIDS AND THEIR ESTERS, AND CONTAINING NOT LESS THAN EIGHT CARBON ATOMS, AT A TEMPERATUR FALLING WITHIN THE RANGE VARYING BETWEEN ABOUT 100*C. AND ABOUT 200*C.
Claim 4
Dependent Claim
94 words
A REACTION PRODUCT OBTAINED FROM THE REACTION INVOLVING ABOUT ONE MOL OF A DIESTER OF DITHIOPHOSPHORIC ACID IN WHICH ALL ALKYL RADICALS IN THE DIESTER ARE SATURATED, WITH ONE MOL OF AN ORGANIC COMPOUND CONTAINING AT LEAST ONE DOUBLE BOND IN A STRAIGHT CHAIN OF CARBON ATOMS AT LEAST FOUR CARBON ATOMS IN LENTH, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBONS, ALCOHOLS, FATTY ACIDS AND THEIR ESTERS, AND CONTAINING NOT LESS THAN EIGHT CARBON ATOMS, AT A TEMPERATUR FALLING WITHIN THE RANGE VARYING BETWEEN ABOUT 100*C. AND ABOUT 200*C.
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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) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |