US2794022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cycloserine
Assignee: Commercial Solvents Corp
•
Filing: 1955-03-25
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Granted: 1957-05-28
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Expires: 1975-03-25
Abstract
No abstract record available.
Inventors
- 👤 Wallace F Runge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:52
CPC Classifications
C; C07; C07D; C07D261/00; C07D261/02; C07D261/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR THE PRODUCTION OF 4-AMINO-3-ISOXAZOLIDINONE WHICH COMPRISES REACTING 4-ACETAMIDO-3-ISOXAZO LIDINONE WITH AN AQUEOUS SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDE AND ALKALINE EARTH METAL HYDROXIDE AT A TEMPERATURE NOT IN EXCESS OF THE BOILING POINT OF THE REACTION MIXTURE TO OBTAIN 4-AMINO-3-ISOXAZOLIDINONE.
Claim 2
Dependent Claim
50 words
A PROCESS FOR THE PRODUCTION OF 4-AMINO-3-ISOXAZOLIDINONE WHICH COMPRISES REACTING 4-ACETAMIDO-3-ISOXAZO LIDINONE WITH AN AQUEOUS SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL HYDROXIDE AND ALKALINE EARTH METAL HYDROXIDE AT A TEMPERATURE NOT IN EXCESS OF THE BOILING POINT OF THE REACTION MIXTURE TO OBTAIN 4-AMINO-3-ISOXAZOLIDINONE.
References Cited (Backward Citations)
GB715362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |