Hydrotreatment process
CA 2017181 C · Owner: Miyauchi, Yoshimitsu · Inventors: Kawamoto, Kenichi; Manabe, Syuhei; Fujita, Katsuhisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for hydrotreating a hydrocarbon oil contaminated with suspended solid particles and dissolved metallic compounds, comprising the contacting of the oil at an elevated temperature in the presence of hydrogen with porous inorganic oxide particles having a surface area of 1 m2/g or less and a pore volume of at least 0.1 ml/g in pores having a diameter of at least 10 microns.
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 18, 1990 and granted February 6, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 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.