US2532573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing vinylthiazoles
Assignee: EIDP Inc
•
Filing: 1946-06-19
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Granted: 1950-12-05
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Expires: 1966-06-19
Abstract
No abstract record available.
Inventors
- 👤 Salisbury Leroy Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:55
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/20; C07D277/22; C08; C08F; C08F28/00; Y; Y10; Y10S; Y10S525/00; Y10S525/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR PREPARING VINYLTHIAZOLES WHICH COMPRISES BRINGING A BETA-THIAZOLYLETHANOL IN CONTACT WITH AN ALKALI METAL HYDROXIDE CATALYST AT A TEMPERATURE BETWEEN 130*C. AND 225*C. AND AT A SUBATMOSPHERIC PRESSURE BELOW THE VAPOR PRESSURE OF THE VINYLTHIAZOLE PRODUCED IN SAID PROCESS, AND REMOVING SAID VINYLTHIAZOLE FROM THE CATALYST BY DISTILLATION.
Claim 2
Dependent Claim
50 words
A PROCESS FOR PREPARING VINYLTHIAZOLES WHICH COMPRISES BRINGING A BETA-THIAZOLYLETHANOL IN CONTACT WITH AN ALKALI METAL HYDROXIDE CATALYST AT A TEMPERATURE BETWEEN 130*C. AND 225*C. AND AT A SUBATMOSPHERIC PRESSURE BELOW THE VAPOR PRESSURE OF THE VINYLTHIAZOLE PRODUCED IN SAID PROCESS, AND REMOVING SAID VINYLTHIAZOLE FROM THE CATALYST BY DISTILLATION.
References Cited (Backward Citations)
GB478989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |