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Expired Canadian patentCanada

Distribution grid support structure

CA 1207133 A · Owner: Lummus Crest Inc. · Inventors: Kohn, Harold B.; Clark, Malcolm W.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention relates to a support structure for a distribution grid to be mounted in a reaction vessel wherein the reaction vessel is formed with an inwardlyextending annular shoulder portion to which is mounted such as by welding, a ring-member whereby the distribution grid is mounted on such support structure.

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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 8, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 8, 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.
FiledMay 8, 1984
GrantedJuly 8, 1986
Term endedJuly 8, 2003
Patent numberCA 1207133 A
Classification (IPC)B01J8/44 +1 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedMay 8, 1984Patent grantedJuly 8, 1986Term endedJuly 8, 2003

Sources & verification

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