Tetrahydrophthalimides and herbicidal composition
CA 1163634 A · Owner: Mitsubishi Chemical Industries Ltd. · Inventors: Jikihara, Tetsuo; Ushinohama, Kazuyuki; Oda, Masatsugu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides A'-tetrahydrophthalimides which are represented by the general formula (I), wherein X represents hydrogen or a halogen atom; Y represents hydrogen or a halogen atom; R1 represents a hydrogen atom or an alkyl group; R2 represents a hydrogen atom or an alkyl or phenyl group or R1 and R2 are connected to form, R3 represents a hydrogen atom or an alkyl group; w represents -O- or -CH2-; n represents an integer of 1 or 2; A represents -?-, or , ; w1 and w2 represents -O- or -S-; R4 and R5 can be the same or different and respectively represent an alkyl group or R and R5 can be connected to form an alkylene group; R6 represents a hydrogen atom, an alkyl, alkenyl, alkynyl …
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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
- Granted March 13, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2001.
- 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.