Catalyst for reduction of carbon dioxide
CA 2126502 C · Owner: Cosmo Research Institute · Inventors: Iwanami, Hikoichi; Yoshizawa, Takashi; Suzuki, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A catalyst for the reduction of carbon dioxide which comprises at least one transition metal selected from the group consisting of Group VIII (e. g. Ni, Fe Co, Ru, Rh) and Group, VIa (e.g. Mo, W) in the Periodic Table on zinc oxide alone or a composite containing zinc oxide and at least one metal oxide of a metal selected from the group consisting of Group IIIb (e.g. Al, Ga) and Group IVa (e.g. Ti, Zr) in the Periodic Table.
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 June 22, 1994 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 2016.
- 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.