Extrusion die
CA 1299847 C · Owner: Tanaka, Kenichi · Inventors: Ito, Haremi; Maekawa, Hideya; Tanaka, Kenichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An extrusion die, which can be produced and reclaimed precisely, quickly and easily in an economical way, has thin partition walls, a light weight a high, abrasive-resistant property and a prolonged life provides a large reaction surface area for the catalyst to be contacted with the exhaust gases as well as a smooth passage of the exhaust gases with little pressure loss thereof, and mitigates or eliminates the drawbacks of conventional dies.
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 May 5, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 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.