US2966496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nu-vinyloxazolidone
Assignee: BASF SE
•
Filing: 1956-01-04
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Granted: 1960-12-27
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Expires: 1976-01-04
Abstract
No abstract record available.
Inventors
- 👤 Arend Wolfgang
- 👤 Trieschmann Hans-Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:16
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/16; C07D263/18; C07D263/20; C07D263/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
31 words
A PROCESS OF MANUFACTURING N-VINYLOXAZOLIDONE BY SPLITTING OFF HYDROGEN CHLORIDE FROM N-B-CHLOROETHYLOXAZOLIDONE WITH SODIUM METHYLATE AT A TEMPERATURE BETWEEN 15 AND 80*C. IN THE PRESENCE OF AN INERT ANHYDROUS ORGANIC SOLVENT.
Claim 2
Dependent Claim
31 words
A PROCESS OF MANUFACTURING N-VINYLOXAZOLIDONE BY SPLITTING OFF HYDROGEN CHLORIDE FROM N-B-CHLOROETHYLOXAZOLIDONE WITH SODIUM METHYLATE AT A TEMPERATURE BETWEEN 15 AND 80*C. IN THE PRESENCE OF AN INERT ANHYDROUS ORGANIC SOLVENT.
Claim 3
Dependent Claim
32 words
A PROCESS OF MANUFACTURING N-VINYL-OXAZOLIDONE BY SPLITTING OF HYDROGEN CHLORIDE FROM N-B-CHLOROETHYL OXAZOLIDONE WITH SODIUM MONOXIDE AT A TEMPERATURE BETWEEN 15* AND 80*C. IN THE PRESENCE OF AN INERT ANHYDROUS ORGANIC SOLVENT.
Claim 4
Dependent Claim
32 words
A PROCESS OF MANUFACTURING N-VINYL-OXAZOLIDONE BY SPLITTING OF HYDROGEN CHLORIDE FROM N-B-CHLOROETHYL OXAZOLIDONE WITH SODIUM MONOXIDE AT A TEMPERATURE BETWEEN 15* AND 80*C. IN THE PRESENCE OF AN INERT ANHYDROUS ORGANIC SOLVENT.
Claim 5
Dependent Claim
40 words
A PROCESS OF MANUFACTURING N-VINYLOXAZOLIDONE WHICH COMPRISES REACTING THE N-B-CHLOROETHYL ESTER OF BCHLOROETHYL CARBAMIC ACID WITH AT LEAST THE EQUIVALENT AMOUNT OF SODIUM METHYLATE AT A TEMPERATURE BETWEEN 15* AND 80*C. IN THE PRESENCE OF AN INERT ORGANIC ANHYDROUS SOLVENT.
Claim 6
Dependent Claim
40 words
A PROCESS OF MANUFACTURING N-VINYLOXAZOLIDONE WHICH COMPRISES REACTING THE N-B-CHLOROETHYL ESTER OF BCHLOROETHYL CARBAMIC ACID WITH AT LEAST THE EQUIVALENT AMOUNT OF SODIUM METHYLATE AT A TEMPERATURE BETWEEN 15* AND 80*C. IN THE PRESENCE OF AN INERT ORGANIC ANHYDROUS SOLVENT.
Claim 7
Dependent Claim
40 words
A PROCESS OF MANUFACTURING N-VINYLOXAZOLIDONE WHICH COMPRISES REACTING THE N-B-CHLOROETHYL ESTER OF BCHLOROETHYL CARBAMIC ACID WITH AT LEAST THE EQUIVALENT AMOUNT OF SODIUM MONOXIDE AT A TEMPERATURE BETWEEN 15* AND 80*C. IN THE PRESENCE OF AN INERT ORGANIC ANHYDROUS SOLVENT.
Claim 8
Dependent Claim
40 words
A PROCESS OF MANUFACTURING N-VINYLOXAZOLIDONE WHICH COMPRISES REACTING THE N-B-CHLOROETHYL ESTER OF BCHLOROETHYL CARBAMIC ACID WITH AT LEAST THE EQUIVALENT AMOUNT OF SODIUM MONOXIDE AT A TEMPERATURE BETWEEN 15* AND 80*C. IN THE PRESENCE OF AN INERT ORGANIC ANHYDROUS SOLVENT.
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) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |