US2667515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkyl mercaptans
Assignee: Standard Oil Development Co
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Filing: 1950-09-30
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Granted: 1954-01-26
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Expires: 1970-09-30
Abstract
No abstract record available.
Inventors
- 👤 Leland K Beach
- 👤 Allan E Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:22
CPC Classifications
C; C07; C07C; C07C321/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR THE PREPARATION OF METHYL MERCAPTAN WHICH COMPRISES PASSING A REACTANT MIXTURE COMPRISING DIMETHYL SULFIDE AND AN EXCESS OF HYDROGEN SULFIDE OVER A CATALYST CONSISTING ESSENTIALLY OF CADMIUM SULFIDE-ALUMINA CONTAINING ABOUT 10% BY WEIGHT OF CARMIUM SULFIDE AT A TEMPERATURE OF APPROXIMATELY 400* C., AND RECOVERING METHYL MERCAPTAN FROM THE RESULTING PRODUCTS.
Claim 2
Dependent Claim
54 words
A PROCESS FOR THE PREPARATION OF METHYL MERCAPTAN WHICH COMPRISES PASSING A REACTANT MIXTURE COMPRISING DIMETHYL SULFIDE AND AN EXCESS OF HYDROGEN SULFIDE OVER A CATALYST CONSISTING ESSENTIALLY OF CADMIUM SULFIDE-ALUMINA CONTAINING ABOUT 10% BY WEIGHT OF CARMIUM SULFIDE AT A TEMPERATURE OF APPROXIMATELY 400* C., AND RECOVERING METHYL MERCAPTAN FROM THE RESULTING PRODUCTS.
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) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |