US3868407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carboxyalkyl esters of n-phosphonomethyl glycine
Assignee: Monsanto Co
•
Filing: 1973-11-21
•
Granted: 1975-02-25
•
Expires: 1993-11-21
Abstract
Abstract Carboxyalkyl esters of N-phosphonomethyl glycine and their salts and a process for their preparation are described. These esters and salts are useful as contact herbicides.
Inventors
- 👤 John E Franz
- 👤 Hans L Nufer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:33
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
10 words
The compound of claim 1, which is Beta -carboxyethyl-N-phosphonomethyl glycinate.
Claim 4
Dependent Claim
14 words
The compound of claim 1, which is the mono-isopropylamine salt of Beta -carboxyethyl-N-phosphonomethyl glycinate.
References Cited (Backward Citations)
US3799758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |