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Expired Canadian patentCanada

Honeycomb structure and method of producing the same

CA 1322963 C · Owner: Ikeshima, Koichi · Inventors: Ikeshima, Koichi; Horikawa, Osamu

CIPO record

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

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Abstract From the Canadian patent

Abstract of the Disclosure, A honeycomb structure as a substrate for a catalyst includes a ridge arranged on at least one part of an outer surface of the honeycomb structure and extending in a direction of through-apertures thereof and at least one notch formed in the ridge. A method of producing the honeycomb structure includes steps of extruding a ceramic batch to form a honeycomb structure having a ridge in the form of a shape extending at least one part of the honeycomb structure in cross-section and removing at least one part of the ridge in directions of through-apertures of the honeycomb structure to form a notch. With the arrangement of the honeycomb structure, it is possible to …

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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 October 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 27, 1989
GrantedOctober 12, 1993
Term endedOctober 12, 2010
Patent numberCA 1322963 C
Classification (IPC)B32B3/12 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJuly 27, 1989Patent grantedOct 12, 1993Term endedOct 12, 2010

Sources & verification

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