Patent Yard Sign in
Expired Canadian patentCanada

High strength ceramic honeycomb structure

CA 1289544 C · Owner: Hattori, Isao · Inventors: Hattori, Isao; Ikeshima, Koichi

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

Abstract of the Disclosure, A high strength ceramic honeycomb structure includes a number of quadrilateral cells arranged adjacent to each other. Triangular cells are arranged in a zone in the proximity of an outer circumference of the honeycomb structure. Partitions of the triangular cells are oblique to partitions forming the quadrilateral cells and extending substantially toward a center of the honeycomb structure. The oblique partitions of the triangular cells serve to improve the isostatic strength of the honeycomb structure and to decrease the pressure losses.

Read the whole patent

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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 7, 1987
GrantedSeptember 24, 1991
Term endedSeptember 24, 2008
Patent numberCA 1289544 C
Classification (IPC)B01J35/04 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 7, 1987Patent grantedSep 24, 1991Term endedSep 24, 2008

Sources & verification

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