US2773067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of oxazolidones-z
Assignee: —
•
Filing: —
•
Granted: 1956-12-04
•
Expires: 1973-12-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:36
CPC Classifications
C; 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
38 words
THE METHOD OF MAKING OXAZOLIDONES-2 THAT COMPRISES REACTING A CARBONATE OF THE GROUP CONSISTING OF THE ALKALI METALS AND AMMONIA WITH A SULPHATE ESTER OF AN ETHANOL AMINE FROM THE GROUP CONSISTING OF THE ALKALI METALS AND AMMONIA.
Claim 2
Independent Claim
38 words
THE METHOD OF MAKING OXAZOLIDONES-2 THAT COMPRISES REACTING A CARBONATE OF THE GROUP CONSISTING OF THE ALKALI METALS AND AMMONIA WITH A SULPHATE ESTER OF AN ETHANOL AMINE FROM THE GROUP CONSISTING OF THE ALKALI METALS AND AMMONIA.
References Cited (Backward Citations)
FR913163A
Cited
US2399118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |