US2787613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of contacting sulfurized dipentene with activated alumina
Assignee: Standard Oil Co
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Filing: 1954-08-09
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Granted: 1957-04-02
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Expires: 1974-08-09
Abstract
No abstract record available.
Inventors
- 👤 Ellis K Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:35
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M135/04; C10M2219/00; C10M2219/02; C10M2219/022; C10N; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
IN THE PREPARATION OF A SULFURIZED DIPENTENE TYPE BEARING CORROSION INHIBITOR BY REACTING DIPENTENE WITH SULFUR AT A TEMPERATURE IN THE RANGE OF APPROXIMATELY 300*-400*F., THE IMPROVEMENT WHICH COMPRISES CONTACTING THE REACTION MIXTURE WITH ACTIVATED ALUMINA AT A TEMPERATURE IN THE RANGE OF ABOUT 340*-450*F. AND STRIPPING UNREACTED HYDROCARBONS FROM THE REACTION PRODUCT.
Claim 2
Dependent Claim
53 words
IN THE PREPARATION OF A SULFURIZED DIPENTENE TYPE BEARING CORROSION INHIBITOR BY REACTING DIPENTENE WITH SULFUR AT A TEMPERATURE IN THE RANGE OF APPROXIMATELY 300*-400*F., THE IMPROVEMENT WHICH COMPRISES CONTACTING THE REACTION MIXTURE WITH ACTIVATED ALUMINA AT A TEMPERATURE IN THE RANGE OF ABOUT 340*-450*F. AND STRIPPING UNREACTED HYDROCARBONS FROM THE REACTION PRODUCT.
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) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |