Uracil derivatives and herbicides containing the same as active ingredient
CA 2021005 C · Owner: Watanabe, Shigeomi · Inventors: Itoh, Kaoru; 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 haloalkyl group at the 5-position and a phenyl group at the 2-position which has a specific substituent which, are represented by the formula (I): (see formula I), These compounds show penetrative translocation activity and a very high herbicidal activity, in which as compared with the conventional herbicidal compounds the said uracil derivatives can be applied for either soil treatment or foliage treatment, thereby producing a quick and high herbicidal effect even at a very low dosage against a large variety of weeds including perennial weeds, and have the property to residual effect for an appropriate period of time.
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 July 12, 1990 and granted January 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 2012.
- 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.