Hydrotreating catalyst and process
CA 2174947 A1 · Owner: Ryan, Robert Charles · Inventors: Ryan, Robert Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hydrotreating catalyst having improved hydrodesulphurization and hydrodenitrification activity comprising an alumina supported Group VIB and/or Group VIII metal-containing hydrogenating catalyst which has been impregnated with a liquid form of a silicon compound having general formula (I) wherein , U, V, W, X, Y, and Z can indivdually be -R -OR, -Cl, -Br, -SiH3, -COOR, -, SiHnClm R being either hydrogen, or an alkyl, cycloalkyl aromatic, alkyl , aromatic, alkylcycloalkyl radical having from 1 to 30 carbon atoms "n" and , "m" being whole numbers in the range of from 1 to 3 and "a" being a whole number in the range of from 0 to 80, in an amount sufficient to deposit from 2.5 to 8.0 …
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 October 26, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 26, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 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.