Patent US2726236A successfully refreshed from Google Patents.
US2726236A
Expired / Lapsed
US
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Production of sulfur-containing high molecular weight hydrocarbon derivatives
Assignee: Shell Development Co
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Filing: 1953-02-02
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Granted: 1955-12-06
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Expires: 1973-02-02
Abstract
No abstract record available.
Inventors
- 👤 Paul R Van Ess
- 👤 Zachar John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:11
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2219/00; C10M2219/08; C10M2219/082; C10N; C10N2040/00; C10N2040/08; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE PROCESS FOR THE PRODUCTION OF IMPROVED ADDITIVES FOR LIQUID LUBRICANTS CONSISTING ESSENTIALLY OF SULFURCONTAINING HIGH MOLECULAR WEIGHT HYDROCARBON DERIVATIVES CONTAINING MORE THAN ONE SULFUR BRIDGE BETWEEN CARBON CHAINS, WHICH COMPRISES REACTING A HALOGENATED HIGH MOLECULAR WEIGHT HYDROCARBON IN ALCOHOLIC SOLUTION WITH AN INORGANIC SULFIDE AT A PRESSURE OF FROM ABOUT 150 TO ABOUT 500 POUNDS PER SQUARE INCH GAUGE, A TEMPERATURE OF FROM ABOUT 125* TO ABOUT 165* C., AND IN THE PRESENCE OF A MOLE RATIO OF WATER TO SAID INORGANIC SULFIDE IN THE RANGE OF FROM ABOUT 10:1 TO ABOUT 25:1.
Claim 2
Dependent Claim
94 words
THE PROCESS FOR THE PRODUCTION OF IMPROVED ADDITIVES FOR LIQUID LUBRICANTS CONSISTING ESSENTIALLY OF SULFURCONTAINING HIGH MOLECULAR WEIGHT HYDROCARBON DERIVATIVES CONTAINING MORE THAN ONE SULFUR BRIDGE BETWEEN CARBON CHAINS, WHICH COMPRISES REACTING A HALOGENATED HIGH MOLECULAR WEIGHT HYDROCARBON IN ALCOHOLIC SOLUTION WITH AN INORGANIC SULFIDE AT A PRESSURE OF FROM ABOUT 150 TO ABOUT 500 POUNDS PER SQUARE INCH GAUGE, A TEMPERATURE OF FROM ABOUT 125* TO ABOUT 165* C., AND IN THE PRESENCE OF A MOLE RATIO OF WATER TO SAID INORGANIC SULFIDE IN THE RANGE OF FROM ABOUT 10:1 TO ABOUT 25:1.
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) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |