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Expired Canadian patentCanada

Method of dewaxing a vegetable oil

CA 1205816 A · Owner: Nisshin Oil Mills, Ltd. · Inventors: Ohuchi, Hiroo; Ohshima, Masashi; Matsuda, Kazuo

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

This invention relates to a method of dewaxing a vegetable oil. More particularly, the present invention is concerned with a method of removing a wax from a vegetable oil by means of a porous membrane. The process of the present invention is useful not only for dewaxing a vegetable oil but also for removing a wax together with a phospholipid a free fatty acid, and water from a crude vegetable oil,

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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 10, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 8, 1983
GrantedJune 10, 1986
Term endedJune 10, 2003
Patent numberCA 1205816 A
Classification (IPC)C11C3/10 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedApril 8, 1983Patent grantedJune 10, 1986Term endedJune 10, 2003

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.