Uracil derivatives and herbicides containing the same as active ingredient
CA 2033929 C · Owner: Suzuki, Koichi · Inventors: Fukuda, Kenzou; Suzuki, Koichi; Satow, Jun
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is uracil derivatives having a trifluoromethyl group at the 6-position and a phenyl group at the 3-position which has a NHSO2D26 group at 5-position of the benzene ring, halogen atom at 4-position thereof and hydrogen atom or halogen atom at 2-position thereof, which are represented by the formula (I) shown below. wherein R7 represents hydrogen, fluorine or chlorine; R8 represents chlorine; and D26 represents methyl ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl sec-butyl, t-butyl, CH2CF3 or CH2CH2CH2Cl. Compounds of the invention show penetrative translocation activity, a very high herbicidal activity and, particularly, no phytotoxicity against soybean in, which as …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 10, 1991 and granted February 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.