US2536684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfurized product and preparation thereof
Assignee: Shell Development Co
•
Filing: 1947-06-02
•
Granted: 1951-01-02
•
Expires: 1967-06-02
Abstract
No abstract record available.
Inventors
- 👤 Harman Denham
- 👤 William E Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:26
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/321; C08G65/326; C08G65/327; C08G75/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/40; C10M2207/402; C10M2207/404; C10M2221/00; C10M2221/04; C10M2223/00; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/02; C10N; C10N2010/00; C10N2010/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
THE PROCESS WHICH CONSISTS ESSENTIALLY OF HEATING A POLYMER HAVING RECURRING UNITS OF THE GENERAL CONFIGURATION @SP -(O-R)@SP WHEREIN R IS AN ALKYLENE HYDROCARBON RADICAL, WITH AN AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR, COMPOUNDS CONTAINING SULFUR TO CHLORINE LINKAGES AND COMPOUNDS CONTAINING SULFUR TO PHOSPHOROUS LINKAGES FOR A PERIOD OF 3 TO 5 HOURS AT A TEMPERATURE BETWEEN 50* AND 200* C., THE AMOUNT OF SAID AGENT BEING SUFFICIENT TO IMPART A SULFUR CONTENT OF 1 TO 30% BY WEIGHT OF SAID POLYMER TO THE REACTION PRODUCT.
Claim 2
Dependent Claim
89 words
THE PROCESS WHICH CONSISTS ESSENTIALLY OF HEATING A POLYMER HAVING RECURRING UNITS OF THE GENERAL CONFIGURATION @SP -(O-R)@SP WHEREIN R IS AN ALKYLENE HYDROCARBON RADICAL, WITH AN AGENT SELECTED FROM THE GROUP CONSISTING OF SULFUR, COMPOUNDS CONTAINING SULFUR TO CHLORINE LINKAGES AND COMPOUNDS CONTAINING SULFUR TO PHOSPHOROUS LINKAGES FOR A PERIOD OF 3 TO 5 HOURS AT A TEMPERATURE BETWEEN 50* AND 200* C., THE AMOUNT OF SAID AGENT BEING SUFFICIENT TO IMPART A SULFUR CONTENT OF 1 TO 30% BY WEIGHT OF SAID POLYMER TO THE REACTION PRODUCT.
Claim 3
Dependent Claim
45 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF AN ALKYLENE GLYCOL POLYMER AND A MINOR AMOUNT, SUFFICIENT TO IMPART EXTREME PRESSURE PROPERTIES TO SAID COMPOSITION, OF A POLYMERIC ALKYLENE GLYCOL REACTION PRODUCT WITH SULFUR, SAID REACTION PRODUCT BEING PREPARED BY THE PROCESS OF CLAIM 1.
References Cited (Backward Citations)
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US2381907A
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US2372244A
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US2409443A
Cited
US2425845A
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US2484370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |