US3712936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl carbamoyl-n,n-dialkylphosphonamidates
Assignee: EIDP Inc
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Filing: 1970-10-08
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Granted: 1973-01-23
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Expires: 1990-10-08
Abstract
Abstract THE DISCLOSURE REACHES THE PREPARATION OF NOVEL GROUP OF ALKYL CARBAMOYL-N,N''-DIALKYLPHOSPHONAMIDATES WHICH ARE USEFUL TO RETARD THE GROWTH OF PLANTS OR TO INCREASE THE SUGAR CONTENT OF SUGAR-CONTAINING PLANTS. THE ALKYL CARBAMOYL-N,N''-DIALKYLPHOSPHANAMMIDATES ARE PREPARED AS FOLLOWS: AN APPROPRIATE AMINE IS REACTED WITH A DIALKYLCHLOROPHOSPHITE. THE PRODUCT IS TREATED WITH A SUITABLE CHLOROFORMATE FOLLOWED BY TREATMENT WITH AMMONIA.
Inventors
- 👤 A Jelinek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:04
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/44; C07F9/4403; C07F9/443
Claims Analysis
Total Claims: 0
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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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |