Method of refining a vegetable oil
CA 1189087 A · Owner: Nisshin Oil Mills, Ltd. · Inventors: Matsuda, Kazuo; Mutoh, Yoshihiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of removing a gum from a crude vegetable oil containing a gum which comprises stirring a gum containing vegetable oil in the presence of water and contacting the stirred vegetable oil with the surface of a specific porous membrane having a critical surface tension (?c) of less than 33 dynes/cm and having an average pore diameter of 0.05 to 3 µm, whereby the gum contained in the crude vegetable oil is efficiently removed together with the water and a refined vegetable oil substantially free of the gum and water can be obtained with high productivity.
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
- Granted June 18, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2002.
- 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.