Heat-resistant stainless steel foil for catalyst-carrier of combustion exhaust gas purifiers
CA 2026125 C · Owner: Kobayashi, Masaaki · Inventors: Fudanoki, Fumio; Hirashima, Kenji; Kobayashi, Masaaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat-resistant stainless steel foil for a catalyst-carrier of combustion exhaust gas purifiers consisting essentially in weight percentage of: more than 0.06 up to 0.15 of Ln, the Ln being a mixture of La, Ce, Pr and Nd;, from 8x(%Ln+0.015)/45 to 0.1 of P; from 4.5 to 6.5 of Al;, from 13 to 25 of Cr; not more than 0.025 of C;, not more than 0.02 of N; not more than 0.03 of C+N; and, the balance consisting of Fe and unavoidable impurities.
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
- Filed September 25, 1990 and granted December 13, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2012.
- 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.