Patent US2597750A successfully refreshed from Google Patents.
US2597750A
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Stabilized phosphorus and sulfurcontaining hydrocarbon reaction products and compositions containing the same
Assignee: Standard Oil Co
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Filing: 1949-02-23
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Granted: 1952-05-20
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Expires: 1969-02-23
Abstract
No abstract record available.
Inventors
- 👤 Edward N Roberts
- 👤 Lawson W Mixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:03
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/123; C07; C07F; C07F9/00; C07F9/02; C07F9/025; C08; C08F; C08F8/00; C08F8/28; C08K; C08K5/00; C08K5/49; C08K5/5398; C08L; C08L21/00; C10M2207/00; C10M2207/40; C10M2207/404; C10M2219/00; C10M2219/02; C10M2219/024; C10M2221/00; C10M2221/04; C10M2221/041; C10M2223/00; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2040/00; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
A LUBRICANT COMPOSITION CONTAINING A MAJOR PROPORTION OF AN OIL AND FROM ABOUT 0.001% TO ABOUT 10% OF A METAL SALT OF THE PRODUCT OBTAINED BY REACTING FROM ABOUT 1% TO ABOUT 50% OF A PHOSPHORUS SULFIDE WITH A NORMALLY LIQUID HYDROCARBON AT A TEMPERATURE OF FROM ABOUT 200* F. TO ABOUT 600*F., NEUTRALIZING SAID REACTION PRODUCT WITH A BASICALLY REACTING METALLIC COMPOUND AND REACTING THE NEUTRALIZED PRODUCT WITH FROM ABOUT 0.5% TO ABOUT 40% OF A QUINONE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 100F. TO ABOUT 400*F.
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) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |