(phenylethenyl)phenylpropionaldehyde and method for producing (benzoylphenyl) propionic acid using the same
CA 1304401 C · Owner: Arai, Yutaka · Inventors: Shimizu, Isoo; Arai, Yutaka; Matsumura, Yasuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel compound of .alpha.-(3-(1-phenylethenyl)phenyl)propionaldehyde and a method for producing .alpha.-(3-benzoylphenyl)propionic acid which is prepared by oxidizing the former compound as an intermediate. The method is characterized in the easiness in operation the low cost and, the high purity of the product.
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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 June 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 2009.
- 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
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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.