Patent US2730289A successfully refreshed from Google Patents.
US2525200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 2-mercapto oxazolines
Assignee: Polymerisable Products Ltd
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Filing: 1946-12-23
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Granted: 1950-10-10
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Expires: 1966-12-23
Abstract
No abstract record available.
Inventors
- 👤 Bergmann Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:53
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A PROCESS WHICH COMPRISES TREATING AN ALCOHOL OF THE TYPE
Claim 2
Dependent Claim
10 words
A PROCESS WHICH COMPRISES TREATING AN ALCOHOL OF THE TYPE
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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |