Patent DE698817C successfully refreshed from Google Patents.
US3969102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Herbicides
Assignee: Mitsui Toatsu Chemicals Inc
•
Filing: 1974-08-21
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Granted: 1976-07-13
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Expires: 1994-08-21
Abstract
Abstract 2,4-Dichloro-3'-(β-chloroethoxy)-4'-nitrodiphenyl ether is prepared by condensing 2,3',4-trichloro-4'-nitrodiphenyl ether with ethyleneglycol in the presence of an acid-binding agent and then chlorinating the hydroxyethoxy group of the resulting condensate. This compound posesses an excellent herbicidal activity to a wide variety of undesirable weeds with an extremely low phyto-toxicity to useful crops.
Inventors
- 👤 Takeo Yoshimoto
- 👤 Keiichi Igarashi
- 👤 Takeo Harayama
- 👤 Masaaki Ura
- 👤 Naoki Sato
- 👤 Teruhiko Toyama
- 👤 Osamu Morikawa
- 👤 Yoshio Takasawa
- 👤 Taisuke Kurechi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:09
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/27; C07C205/35; C07C205/36; C07C205/38
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
2 words
2,4-Dichloro-3'-(β-chloroethoxy)-4'-nitrodiphenyl ether.
Claim 2
Dependent Claim
2 words
2,4-Dichloro-3'-(β-chloroethoxy)-4'-nitrodiphenyl ether.
Claim 3
Dependent Claim
16 words
A herbicide comprising 2,4-dichloro-3'-(β-chloroethoxy)-4'-nitrodiphenyl ether in a herbicidally effective amount and an inert carrier or vehicle.
Claim 4
Dependent Claim
16 words
A herbicide comprising 2,4-dichloro-3'-(β-chloroethoxy)-4'-nitrodiphenyl ether in a herbicidally effective amount and an inert carrier or vehicle.
Claim 5
Dependent Claim
18 words
A herbicide according to claim 2 wherein said ether in dissolved in or dispersed in a liquid vehicle.
Claim 6
Dependent Claim
13 words
A herbicide according to claim 3 wherein said liquid vehicle is solvent naphtha.
Claim 7
Dependent Claim
21 words
A herbicide according to claim 2 wherein said inert carrier is a solid selected from mineral powders and insoluble inorganic compounds.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |