US2531602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of thioethers and/or mercaptans
Assignee: Pure Oil Co
•
Filing: 1946-12-28
•
Granted: 1950-11-28
•
Expires: 1966-12-28
Abstract
No abstract record available.
Inventors
- 👤 Richmond T Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:09
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/14; C07C319/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE METHOD OF PREPARING SECONDARY AND TERTIARY MERCAPTANS FROM OLEFINS CONTAINING A TERMINAL DOUBLE BOND AND WHICH OLEFINS ARE ADMIXED WITH PEROXIDES IN AMOUNT SUFFICIENT TO CAUSE ABNORMAL ADDITION OF THE SULFHYDRYL GROUP TO THE OLEFIN COMPRISING REACTING SAID OLEFINS WITH HYDROGEN SULFIDE UNDER ANHYDROUS CONDITIONS IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST.
Claim 2
Independent Claim
53 words
THE METHOD OF PREPARING SECONDARY AND TERTIARY MERCAPTANS FROM OLEFINS CONTAINING A TERMINAL DOUBLE BOND AND WHICH OLEFINS ARE ADMIXED WITH PEROXIDES IN AMOUNT SUFFICIENT TO CAUSE ABNORMAL ADDITION OF THE SULFHYDRYL GROUP TO THE OLEFIN COMPRISING REACTING SAID OLEFINS WITH HYDROGEN SULFIDE UNDER ANHYDROUS CONDITIONS IN THE PRESENCE OF A FRIEDEL-CRAFTS CATALYST.
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) | 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 |