Preparation process of cinnamate esters
CA 1238337 A · Owner: Mitsui Chemicals, Incorporated · Inventors: Hara, Isao; Takaki, Usaji; Sudo, Isamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of Disclosure, A cinnamte ester is prepared by reacting carbon monoxide, oxygen, and its corresponding styrene compound and alcohol in the presence of a catalyst which contains, as essential components (a) a platinum group metal or a compound thereof;, (b) a copper or iron compound; and (c) a compound of at least one metal selected from groups 4A, 5A, 7A, 8A(the iron group only) 1B(exclusive of copper) and 2B.
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 June 21, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 21, 2005.
- 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.