US2950324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High molecular weight mercaptan
Assignee: Pennwalt Corp
•
Filing: 1958-04-10
•
Granted: 1960-08-23
•
Expires: 1978-04-10
Abstract
No abstract record available.
Inventors
- 👤 Loev Bernard
- 👤 Roland H Goshorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:51
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34; C07; C07C; C07C319/00; C07C319/02; C07C319/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
PROCESS FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT MERCAPTANS OF FROM 8 TO 18 CARBON ATOMS WHICH COMPRISES PASSING A MIXTURE OF A PROPYLENE HOMOPOLYMER AND HYDROGEN SULFIDE THROUGH A REACTION ZONE CONTAINING A PHOSPHORIC ACID CATALYST SUPPORTED ON A SILICACEOUS CARRIER AT A TEMPERATURE OF FROM ABOUT 25* TO ABOUT 100* C. AND AT A PRESSURE OF ROM ABOUT 50 TO ABOUT 350 P.S.I.G.
Claim 2
Dependent Claim
65 words
PROCESS FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT MERCAPTANS OF FROM 8 TO 18 CARBON ATOMS WHICH COMPRISES PASSING A MIXTURE OF A PROPYLENE HOMOPOLYMER AND HYDROGEN SULFIDE THROUGH A REACTION ZONE CONTAINING A PHOSPHORIC ACID CATALYST SUPPORTED ON A SILICACEOUS CARRIER AT A TEMPERATURE OF FROM ABOUT 25* TO ABOUT 100* C. AND AT A PRESSURE OF ROM ABOUT 50 TO ABOUT 350 P.S.I.G.
References Cited (Backward Citations)
US2392554A
Cited
US2531767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |