Nickel/silica catalyst and the preparation and use thereof
CA 2016817 C · Owner: Johnson Matthey Plc · Inventors: Lok, Cornelis Martinus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nickel/silica catalyst useful for the hydrogenation of unsaturated organic compounds, especially fatty acids. The catalyst satisfies the following combination of features:, 1) a molar ratio of SiO2/Ni = 0.15 - 0.35 2) a molar ratio of X/Ni = 0 - 0.15, 3) an active nickel surface area above 120m2/g 4) a BET surface area of which at least 60% is found with pores with a radius below 1.5 nm.
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 May 15, 1990 and granted June 23, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 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.