US3344201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of styrene
Assignee: Individual
•
Filing: 1965-06-07
•
Granted: 1967-09-26
•
Expires: 1985-06-07
Abstract
No abstract record available.
Inventors
- 👤 Seymour C Schuman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:15
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/46; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/90; Y10S585/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE PROCESS OF CONTACTING ETHYL BENZENE WITH ELEMENTAL SULFUR ADIABATICALLY OVER A SOLID CATALYST COMPRISING A METALLIC SULFIDE AT A TEMPERATURE BETWEEN ABOUT 600*F. AND 1100*F. AND RECOVERING STYRENE FROM THE EFFLUENT FROM SAID REACTION ZONE.
Claim 2
Dependent Claim
36 words
THE PROCESS OF CONTACTING ETHYL BENZENE WITH ELEMENTAL SULFUR ADIABATICALLY OVER A SOLID CATALYST COMPRISING A METALLIC SULFIDE AT A TEMPERATURE BETWEEN ABOUT 600*F. AND 1100*F. AND RECOVERING STYRENE FROM THE EFFLUENT FROM SAID REACTION ZONE.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |