Process for isomerizing a halogenated toluene
CA 1209591 A · Owner: Toray Industries, Inc. · Inventors: Iwayama, Kazdyoshi; Inoue, Takehisa; Tada, Kuniyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided is a process for isomerizing a halogenated toluene using acid zeolite as a catalyst in the presence of benzene, alkylbenzene or halogenated benzene as a diluent the, novel process effectively reducing the deterioration of isomerization activity with time by use of said diluent.
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
- Granted August 12, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 2003.
- 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.