Patent US2833788A successfully refreshed from Google Patents.
US2833788A
Expired / Lapsed
US
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Production of epoxides
Assignee: Shell Development Co
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Filing: 1955-12-28
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Granted: 1958-05-06
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Expires: 1975-12-28
Abstract
No abstract record available.
Inventors
- 👤 John R Skinner
- 👤 Jr Charles H Wilcoxen
- 👤 George J Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:53
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/14; C07D301/00; C07D301/02; C07D301/03; C07D301/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A PROCESS FOR PRODUCING AN EPOXIDE BY REACTING HYDROGEN PEROXIDE WITH A MONETHYLENIC ALCOHOL OF 3 TO 18 CARBON ATOMS PER MOLECULE THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN THE PRESENCE OF AT LEAST 0.2% BY WEIGHT OF THE FEED TO THE REACTION OF A WATER SOLUBLE NEUTRAL SALT OF A TUNGSTIC ACID AND DISCONTINUING THE REACTION BEFORE SUBSTANTIAL OPENING OF THE EPOXIDE RING PRODUCED TAKES PLACE.
Claim 2
Dependent Claim
70 words
IN A PROCESS FOR PRODUCING AN EPOXIDE BY REACTING HYDROGEN PEROXIDE WITH A MONETHYLENIC ALCOHOL OF 3 TO 18 CARBON ATOMS PER MOLECULE THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE REACTION IN THE PRESENCE OF AT LEAST 0.2% BY WEIGHT OF THE FEED TO THE REACTION OF A WATER SOLUBLE NEUTRAL SALT OF A TUNGSTIC ACID AND DISCONTINUING THE REACTION BEFORE SUBSTANTIAL OPENING OF THE EPOXIDE RING PRODUCED TAKES PLACE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |