US2895960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of production of 5-o-methoxyphenoxymethyl-2-oxazolidone
Assignee: AH Robins Co Inc
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Filing: 1958-06-26
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Granted: 1959-07-21
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Expires: 1978-06-26
Abstract
No abstract record available.
Inventors
- 👤 Carl D Lunsford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:02
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/16; C07D263/18; C07D263/20; C07D263/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE METHOD OF PREPARING 5-O-METHOXYPHENOXYMETHYL-2-OXAZOLIDONE WHICH COMPRISES REACTING APPROXIMATELY EQUIMOLR QUANTITIES OF UREA AND 3 - O - METHOXYPHENOXY-2HYDROXY-1-PROXYL CARBAMATE BY HEATING AT A TEMPERATURE OF A LEAST 180*C. FOR A PERIOD OF AT LEAST THREE HOURS AND SEPARATING AND RECOVERING SAID OXAZOLIDONE.
Claim 2
Independent Claim
43 words
THE METHOD OF PREPARING 5-O-METHOXYPHENOXYMETHYL-2-OXAZOLIDONE WHICH COMPRISES REACTING APPROXIMATELY EQUIMOLR QUANTITIES OF UREA AND 3 - O - METHOXYPHENOXY-2HYDROXY-1-PROXYL CARBAMATE BY HEATING AT A TEMPERATURE OF A LEAST 180*C. FOR A PERIOD OF AT LEAST THREE HOURS AND SEPARATING AND RECOVERING SAID OXAZOLIDONE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |