Patent US2531601A successfully refreshed from Google Patents.
US2531601A
Expired / Lapsed
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Mercaptan synthesis
Assignee: Pure Oil Co
•
Filing: 1945-03-23
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Granted: 1950-11-28
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Expires: 1965-03-23
Abstract
No abstract record available.
Inventors
- 👤 Richmond T Bell
- 👤 Carlisle M Thacker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:20
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/02; C07C319/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE METHOD OF PREPARING MERCAPTANS FROM POLYMERIC OLEFINS WHICH ARE COPOLYMERS OF DIFFERENT MONOMERS, WITHOUT MATERIAL DEPOLYMERIZATION OF THE OLEFIN COMPRISING, REACTING THE OLEFINS AND HYDROGEN SULFIDE IN THE PRESENCE OF A CATALYST CONSISTING OF A FRIEDEL-CRAFTS CATALYST AND A TEMPERATURE IN THE RANGE FROM ABOUT 25* TO 80*C.
Claim 2
Independent Claim
49 words
THE METHOD OF PREPARING MERCAPTANS FROM POLYMERIC OLEFINS WHICH ARE COPOLYMERS OF DIFFERENT MONOMERS, WITHOUT MATERIAL DEPOLYMERIZATION OF THE OLEFIN COMPRISING, REACTING THE OLEFINS AND HYDROGEN SULFIDE IN THE PRESENCE OF A CATALYST CONSISTING OF A FRIEDEL-CRAFTS CATALYST AND A TEMPERATURE IN THE RANGE FROM ABOUT 25* TO 80*C.
References Cited (Backward Citations)
US2101096A
Cited
US2052268A
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US2352435A
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US2296399A
Cited
US2366453A
Cited
US2434510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |