Method of manufacturing methacrylic acid and an oxidation catalyst
CA 1058146 A · Owner: Nippon Kayaku Kabushiki Kaisha · Inventors: Ogawa, Masanobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel oxidation catalyst is described as well as a method of manufacturing methacrylic acid by oxidation of methacrolein. The novel catalyst has the following composition:, PdaPbSbcXdOa, wherein, X denotes at least one element selected from the group consisting of bismuth, lead, chromium iron, nickel, cobalt, manganese, tin, uranium and barium the subscripts, a, b, c, d and e denote the numbers of the Pd P, Sb, X and, O atoms and, where a is assumed to have the value of 1 then b has a value in the range of from 1 to 42. c a value in the range of from 0.1 to 15, d a value in the range of from 0 to 15 and e a value which is automatically determined from the valencies of the other elements …
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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 July 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 10, 1996.
- 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.