US3625968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of tetrahydro-1,2,4-oxadiazine-3,5-diones
Assignee: BASF SE
•
Filing: 1968-01-08
•
Granted: 1971-12-07
•
Expires: 1988-01-08
Abstract
Abstract The production of substituted tetrahydro-1,2,4-oxadiazine-3,5diones by the reaction of open-chain substituted N-( Alpha carboxy)-alkoxyureas with cyclizing agents in the form of chlorides or bromides of phosphoric acid, phosphorous acid, sulfurous acid or carbonic acid. The products of the process (some of which are new substances) are herbicides, diuretic and antiphlogistic pharmaceuticals and valuable starting products for the production of pesticides and pharmaceuticals.
Inventors
- 👤 Albrecht Zschocke
- 👤 Karl-Heinz Koenig
- 👤 Gustav Steinbrunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:03
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/64
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |