US4008296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of N-phosphonomethylglycinonitrile
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1975-08-15
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Granted: 1977-02-15
•
Expires: 1995-08-15
Abstract
Abstract Herbicidal compound, esters of N-phosphonomethylglycinonitrile, are disclosed. Also a process for preparing same.
Inventors
- 👤 John Edward Duncan Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:30
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
26 words
An ester of N-phosphonomethylglycinonitrile, having the formula: ##STR6## wherein R 1 and R 2 each represent an alkyl radical of from 1 to 6 carbon atoms.
Claim 2
Dependent Claim
26 words
An ester of N-phosphonomethylglycinonitrile, having the formula: ##STR6## wherein R 1 and R 2 each represent an alkyl radical of from 1 to 6 carbon atoms.
Claim 3
Dependent Claim
15 words
An ester according to claim 1 wherein R 1 and R 2 are both ethyl.
References Cited (Backward Citations)
US2844558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |