US2561773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil compositions containing the reaction products of diesters of dithiophosphoric acid and pinene
Assignee: ExxonMobil Oil Corp
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Filing: 1947-10-28
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Granted: 1951-07-24
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Expires: 1967-10-28
Abstract
No abstract record available.
Inventors
- 👤 Frederick B Augustine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:55
CPC Classifications
C; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M137/105; C10M2207/00; C10M2207/40; C10M2207/404; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
AS A NEW COMPOSITION OF MATTER, A LUBRICATING OIL CONTAINING A MINOR PROPORTION, SUFFICIENT TO IMPROVE THE CHARACTERISTICS THEREOF, INCLUDING RESISTANCE AGAINST CORROSION AND SLUDGE FORMATION, OF A PRODUCT OBTAINED FROM THE REACTION BETWEEN A DIESTER OF DITHIOPHOSPHORIC ACID AND A PINENE, SAID REACTION INVOLVING ABOUT ONE MOL OF DIESTER TO ONE MOL OF PINENE, WITH SUFFICIENT HEAT TO COMPLETE THE REACTION.
Claim 2
Dependent Claim
62 words
AS A NEW COMPOSITION OF MATTER, A LUBRICATING OIL CONTAINING A MINOR PROPORTION, SUFFICIENT TO IMPROVE THE CHARACTERISTICS THEREOF, INCLUDING RESISTANCE AGAINST CORROSION AND SLUDGE FORMATION, OF A PRODUCT OBTAINED FROM THE REACTION BETWEEN A DIESTER OF DITHIOPHOSPHORIC ACID AND A PINENE, SAID REACTION INVOLVING ABOUT ONE MOL OF DIESTER TO ONE MOL OF PINENE, WITH SUFFICIENT HEAT TO COMPLETE THE REACTION.
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) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |