US3024253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for oxidizing styrene to styrene oxide
Assignee: Scientific Design LLC
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Filing: 1956-09-14
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Granted: 1962-03-06
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Expires: 1976-09-14
Abstract
No abstract record available.
Inventors
- 👤 Saffer Alfred
- 👤 Robert S Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:13
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/04; B; B01; B01J; B01J27/00; B01J27/06; C07D301/00; C07D301/02; C07D301/03; C07D301/04; C07D301/06; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
AN EPOXIDATION PROCESS TO PRODUCE STYRENE OXIDE COMPRISING CONTACTING STYRENE WITH MOLECULAR OXYGEN IN THE PRESENCE OF MANGANESE BROMIDE CATALYST AT A TEMPERATURE IN THE RANGE OF ABOUT 50 TO 115*C. AND AT A PRESSURE SUCH THAT A LIQUID PHASE IS MAINTAINED.
Claim 2
Dependent Claim
42 words
AN EPOXIDATION PROCESS TO PRODUCE STYRENE OXIDE COMPRISING CONTACTING STYRENE WITH MOLECULAR OXYGEN IN THE PRESENCE OF MANGANESE BROMIDE CATALYST AT A TEMPERATURE IN THE RANGE OF ABOUT 50 TO 115*C. AND AT A PRESSURE SUCH THAT A LIQUID PHASE IS MAINTAINED.
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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |