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Expired Canadian patentCanada

Three dimensional interstitial catalyst support, its manufacture and use

CA 1185589 A · Owner: Johnson Matthey Public Limited Company · Inventors: Bird, Alfred J.; King, Frank

CIPO record

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Abstract From the Canadian patent

A three dimensional interstitial catalyst support and a catalyst system comprising the support for use in (especially pressuresensitive) surface reactions involving disturbed fluid flow especially trickle feed three phase reactions such as the hydrogenation of crotonaldehyde or butyraldehyde. The support comprises a three dimensional self-supporting form-stable interstitial (preferably knitted) wire (11, 23) structure (5 20) in, which the volume of the interstices (4a 9a, 25, 26) is from 60 to, 98 (preferably at least 85) % of the volume of the structure (5, 20). The combination of the use of wire form-stability and an, open structure allows disturbance to be imparted by the catalyst system …

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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 April 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 16, 1982
GrantedApril 16, 1985
Term endedApril 16, 2002
Patent numberCA 1185589 A
Classification (IPC)B01J35/04 +1 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedMarch 16, 1982Patent grantedApril 16, 1985Term endedApril 16, 2002

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.