Patent US3764623A successfully refreshed from Google Patents.
US3764623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Herbicidal dinitro-1,3-phenylenediamine compounds
Assignee: Velsicol Chemical LLC
•
Filing: 1970-09-03
•
Granted: 1973-10-09
•
Expires: 1990-09-03
Abstract
Abstract 2,4-dinitro-1,3-phenylenediamine compounds having a trifluoromethyl group on the aromatic ring. The compounds are useful as herbicides.
Inventors
- 👤 D Hunter
- 👤 Fevre C Le
- 👤 W Woods
- 👤 J Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:28
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/07; C07C205/11; C07C205/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
37 words
A compound according to claim 1 in which R1 is hydrogen, R2 and R3 are each selected from hydrogen and alkyl of one to five carbon atoms, and R4 is alkyl of one to five carbon atoms.
Claim 2
Dependent Claim
27 words
A compound according to claim 2 in which the total number of carbon atoms represented by R1 + R2 + R3+ R4 is about four to eight.
Claim 3
Dependent Claim
34 words
A compound according to claim 2 in which R1 and R2 are hydrogen, R3 is hydrogen or alkyl of one to five carbon atoms and R4 is alkyl of one to five carbon atoms.
Claim 4
Dependent Claim
1 words
N3,N3-diethyl-2,4-dinitro-6-trifluoromethyl-1,3-phenylenediamine.
Claim 5
Dependent Claim
2 words
N3-(1-methyl-2-methoxyethyl)-2,4-dinitro-6-trifluoromethyl-1, 3-phenylenediamine.
Claim 6
Dependent Claim
1 words
N1-ethyl-N3,N3-diethyl-2,4-dinitro-6-trifluoromethyl-1,3-phenylenediamine.
Claim 7
Dependent Claim
1 words
N3,N3-di-n-propyl-2,4-dinitro-6-trifluoromethyl-1,3-phenylenediamine.
Claim 8
Dependent Claim
1 words
N1-methyl-N3,N3diethyl-2,4-dinitro-6-trifluoromethyl-1,3-phenylenediamine.
Claim 9
Dependent Claim
1 words
N1,N1-di-n-propyl-2,4-dinitro-6-trifluoromethyl-1,3-phenylenediamine.
Claim 10
Dependent Claim
1 words
N3-(3-pentyl)-2,4-dinitro-6-trifluoromethyl-1,3-phenylenediamine.
References Cited (Backward Citations)
US3111403A
Cited
US3257190A
Cited
US3332769A
Cited
US3442639A
Cited
GB1110819A
Cited
US3466329A
Cited
US3591638A
Cited
US3546295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |