Ceramic honeycomb structural bodies and method of producing the same
CA 1305466 C · Owner: Ngk Insulators, Ltd. · Inventors: Hijikata, Toshihiko; Mizutani, Isao; Harada, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
64881-296, Abstract of the Disclosure, In a ceramic honeycomb structural body having many through-holes surrounded by partition walls the coating, layer is formed on the outer peripheral wall of the main ceramic honeycomb structural body made through extrusion process and having an outer diameter smaller than a predetermined dimension, whereby the outer diameter of the structural body is controlled at a predetermined required dimensional tolerance.
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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 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 2009.
- 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.