Patent US2636040A successfully refreshed from Google Patents.
US2636040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing glycidol
Assignee: Industrial Rayon Corp
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Filing: 1950-10-06
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Granted: 1953-04-21
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Expires: 1970-10-06
Abstract
No abstract record available.
Inventors
- 👤 Herman A Bruson
- 👤 Thomas W Riener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:50
CPC Classifications
C; C07; C07D; C07D301/00; C07D301/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A METHOD FOR PREPARING GLYCIDOL WHICH COMPRISES HEATING A MIXTURE COMPRISING SUBSTANTIALLY EQUIMOLECULAR PROPORTIONS OF GLYCEROL AND A CYCLIC ALKYLENE CARBONATE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE CARBONATE, PROPYLENE CARBONATE, 1,2-BUTYLENE CARBONATE AND 2,3-BUTYLENE CARBONATE.
Claim 2
Independent Claim
36 words
A METHOD FOR PREPARING GLYCIDOL WHICH COMPRISES HEATING A MIXTURE COMPRISING SUBSTANTIALLY EQUIMOLECULAR PROPORTIONS OF GLYCEROL AND A CYCLIC ALKYLENE CARBONATE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE CARBONATE, PROPYLENE CARBONATE, 1,2-BUTYLENE CARBONATE AND 2,3-BUTYLENE CARBONATE.
References Cited (Backward Citations)
US2446145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |