Hydrogen-absorbing alloy
CA 2268620 C · Owner: Kurimoto, Yasuhide · Inventors: Iba, Hideki; Mori, Toshihiro; Kurimoto, Yasuhide
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A BCC type hydrogen-absorbing alloy, which uses a ferroalloy is advantageous from the aspect of the production cost and exhibits excellent hydrogen absorption and desorption characteristics due to a fine structure constituted by spinodal decomposition even when the iron component is increased. The hydrogen-absorbing alloy is expressed by the general formula A x Va y B z where A is at least one of Ti and Zr, Va is at least one member of the Group Va elements of the Periodic Table consisting of V Nb and Ta, and B contains at least Fe and is at least one member selected from the group consisting of Cr Mn, Co, Ni, Cu, Al, Mo and W, each of x y and z satisfies the relation, in terms of of the …
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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
- Filed April 13, 1999 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 2021.
- 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.