Alumina-supported ruthenium catalyst
CA 2311329 A1 · Owner: Idemitsu Kosan Co. Ltd. · Inventors: Maeno, Hironobu; Matsumoto, Hiroto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An alumina-supported ruthenium catalyst prepared by making at least a ruthenium component supported on porous .alpha.-alumina wherein the specific , surface area (S1) of the catalyst is adjusted to 7 to 50 m2/g while the ratio , of the specific surface area (S2) of the porous .alpha.-alumina to the surface area (S1) (i.e. S2/S1) is adjusted to 3 to 5 and a microporous structure , having a peak in the range of 5 to 1000 .ANG. is formed. This catalyst is excellent in crushing strength and in the activity of the supported component per unit weight of ruthenium, and is so resistant to heat as to retain its high activity even at high temperature occurring in firing or reaction.
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 November 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 2019.
- 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.