Patent US4459584A successfully refreshed from Google Patents.
Patent US3231577A successfully refreshed from Google Patents.
US3231577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of oxazolidinones
Assignee: Dow Chemical Co
•
Filing: 1960-07-25
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Granted: 1966-01-25
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Expires: 1980-07-25
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm E Walles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:49
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/16; C07D263/18; C07D263/20; C07D263/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A PROCESS FOR MAKING AN OXAZOLIDINONE CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
10 words
A PROCESS FOR MAKING AN OXAZOLIDINONE CORRESPONDING TO THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |