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US2817653A
Expired / Lapsed
US
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Sulfur-containing polymers
Assignee: Texaco Inc
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Filing: 1950-04-27
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Granted: 1957-12-24
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Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 Edward L Cole
- 👤 William E Skelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:20
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07G; C07G99/00; C07G99/002; C07G99/0022; C08; C08F; C08F10/00; C10M2221/00; C10N; C10N2040/00; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR PREPARING POLYMERS OF MOLECULAR WEIGHT IN THE LUBE OIL RANGE AND HIGHER WHICH CONTAIN 1-15 WEIGHT PERCENT SULFUR AND POSSESS EXTREME PRESSURE AND ANTI-CORROSIVE PROPERTIES WHICH COMPRISES REACTING A MONOMERIC OLEFIN IN THE GAS OIL RANGE AND LOWER WITH 2 TO 40 WEIGHT PERCENT HYDROGEN SULFIDE AT A TEMPERATURE BETWEEN -50 AND 250* F. IN THE PRESENCE OF A FRIEDEL-CRAFT CATALYST.
Claim 2
Dependent Claim
64 words
A PROCESS FOR PREPARING POLYMERS OF MOLECULAR WEIGHT IN THE LUBE OIL RANGE AND HIGHER WHICH CONTAIN 1-15 WEIGHT PERCENT SULFUR AND POSSESS EXTREME PRESSURE AND ANTI-CORROSIVE PROPERTIES WHICH COMPRISES REACTING A MONOMERIC OLEFIN IN THE GAS OIL RANGE AND LOWER WITH 2 TO 40 WEIGHT PERCENT HYDROGEN SULFIDE AT A TEMPERATURE BETWEEN -50 AND 250* F. IN THE PRESENCE OF A FRIEDEL-CRAFT CATALYST.
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) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |