N-substituted phenylcarbamic acid derivatives, a process for production thereof, and agricultural and horticultural fungicides
CA 2120163 A1 · Owner: Tajima, Sohkichi · Inventors: Kanno, Hideo; Yamamoto, Yoshinobu; Ohnishi, Masanobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An N-substituted phenylcarbamic acid derivative represented by the general formula: (I), wherein as disclosed in the specification each of R1, and R2 is an alkyl group or the like X is O, S or, N(R8), and R3 is -N=C(R4)R5 or the like in the case of X being O, a process for producing said derivative and, an agricultural and horticultural fungicide containing said derivative as an active ingredient.
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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 March 29, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 2016.
- 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.