Patent US4356143A successfully refreshed from Google Patents.
Patent US2580430A successfully refreshed from Google Patents.
US2580430A
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Catalyzed sulfide-hydrocarbon reaction products and method of making same
Assignee: Standard Oil Co
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Filing: 1946-08-24
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Granted: 1952-01-01
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Expires: 1966-08-24
Abstract
No abstract record available.
Inventors
- 👤 Everett C Hughes
- 👤 John D Bartleson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:48
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2223/00; C10M2223/12; C10M2225/00; C10M2225/04; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE REACTION PRODUCT OF A SATURATED HYDROCARBON OIL AND AN AMOUNT WITHIN THE RANGE OF ABOUT ONE TO ABOUT TWENTY PERCENT BY WEIGHT OF A PHOSPHORUS SULFIDE REACTED IN THE PRESENCE OF NOT OVER 10% OF A HALIDE CATALYST AT A TEMPERATURE IN THE RANGE OF ABOUT 250* TO ABOUT 600* F. SO AS TO PRODUCE A LUBRICANT.
Claim 2
Dependent Claim
58 words
THE REACTION PRODUCT OF A SATURATED HYDROCARBON OIL AND AN AMOUNT WITHIN THE RANGE OF ABOUT ONE TO ABOUT TWENTY PERCENT BY WEIGHT OF A PHOSPHORUS SULFIDE REACTED IN THE PRESENCE OF NOT OVER 10% OF A HALIDE CATALYST AT A TEMPERATURE IN THE RANGE OF ABOUT 250* TO ABOUT 600* F. SO AS TO PRODUCE A LUBRICANT.
References Cited (Backward Citations)
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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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |