US2758069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil additives and process of making same
Assignee: Phillips Petroleum Co
•
Filing: 1952-01-03
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Granted: 1956-08-07
•
Expires: 1972-01-03
Abstract
No abstract record available.
Inventors
- 👤 William B Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:43
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/123; C10M2203/00; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10N; C10N2060/00; C10N2060/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
IN A PROCESS FOR PRODUCING LUBRICATING OIL DETERGENT ADDITIVES BY THE OXIDATION, WITH A GAS COMPRISING FREE OXYGEN, OF A LUBRICATING OIL FRACTION AT A TEMPERATURE ABOVE 200* C. THE IMPROVEMENT WHICH COMPRISES CATALYZING THE OXIDATION REACTION WITH THE PRODUCT OBTAINED BY REACTING A PHOSPHORUS SULFIDE WITH A TERPENE WHEREBY OXIDATION TIME IS REDUCED AND A SUPERIOR ADDITIVE IS PRODUCED.
Claim 2
Dependent Claim
60 words
IN A PROCESS FOR PRODUCING LUBRICATING OIL DETERGENT ADDITIVES BY THE OXIDATION, WITH A GAS COMPRISING FREE OXYGEN, OF A LUBRICATING OIL FRACTION AT A TEMPERATURE ABOVE 200* C. THE IMPROVEMENT WHICH COMPRISES CATALYZING THE OXIDATION REACTION WITH THE PRODUCT OBTAINED BY REACTING A PHOSPHORUS SULFIDE WITH A TERPENE WHEREBY OXIDATION TIME IS REDUCED AND A SUPERIOR ADDITIVE IS PRODUCED.
Claim 3
Dependent Claim
58 words
AN IMPROVED LUBRICATING OIL DETERGENT ADDITIVE WHICH COMPRISES AN OXIDATION PRODUCT OBTAINED BY OXIDIZING, WITH A GAS COMPRISING FREE OXYGEN, A LUBRICATING OIL FRACTION AT A TEMPERATURE ABOVE 200* C. IN THE PRESENCE OF A CATALYST COMPRISING A REACTION PRODUCT OBTAINED BY REACTING A PHOSPHORUS SULFIDE WITH A TERPENE AND RECOVERING THE OXIDATION PRODUCT FROM A RESULTING MIXTURE.
Claim 4
Dependent Claim
58 words
AN IMPROVED LUBRICATING OIL DETERGENT ADDITIVE WHICH COMPRISES AN OXIDATION PRODUCT OBTAINED BY OXIDIZING, WITH A GAS COMPRISING FREE OXYGEN, A LUBRICATING OIL FRACTION AT A TEMPERATURE ABOVE 200* C. IN THE PRESENCE OF A CATALYST COMPRISING A REACTION PRODUCT OBTAINED BY REACTING A PHOSPHORUS SULFIDE WITH A TERPENE AND RECOVERING THE OXIDATION PRODUCT FROM A RESULTING MIXTURE.
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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) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |