US2910506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing low molecular weight alkyl monosulfides
Assignee: Pure Oil Co
•
Filing: 1956-11-28
•
Granted: 1959-10-27
•
Expires: 1976-11-28
Abstract
No abstract record available.
Inventors
- 👤 Hillis O Folkins
- 👤 Elmer L Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:13
CPC Classifications
C; C07; C07C; C07C321/00; B; B01; B01J; B01J21/00; B01J21/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A PROCESS FOR THE PREPARATION OF LOW-MOLECULARWEIGTH ALKYL MONOSULFIDES WHICH COMPRISES REACTING A C1-C8 MONOHYDRIC ALKANOL WITH HYDROGEN SULFIDE IN THE PRESENCE OF AN ALUMINA-SILICA CATALYST CONSISTING ESSENTIALLY OF ACTIVATED ALUMINA PRECALCINED AT A TEMPERATURE OF ABOUT 800*-1300* F. AND HAVING INCORPORATED THEREIN SUBSEQUENT TO BEING PRECALCINED FROM 0.5 TO 25% OF SLILICA.
Claim 2
Dependent Claim
53 words
A PROCESS FOR THE PREPARATION OF LOW-MOLECULARWEIGTH ALKYL MONOSULFIDES WHICH COMPRISES REACTING A C1-C8 MONOHYDRIC ALKANOL WITH HYDROGEN SULFIDE IN THE PRESENCE OF AN ALUMINA-SILICA CATALYST CONSISTING ESSENTIALLY OF ACTIVATED ALUMINA PRECALCINED AT A TEMPERATURE OF ABOUT 800*-1300* F. AND HAVING INCORPORATED THEREIN SUBSEQUENT TO BEING PRECALCINED FROM 0.5 TO 25% OF SLILICA.
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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |