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Expired Canadian patentCanada

Fat process

CA 1099281 A · Owner: Unilever Limited · Inventors: Van Den Berg, Hendrikus J.

CIPO record

Overview

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

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Abstract From the Canadian patent

The separation of solid particulate matter from liquid material in which it is dispersed is improved by agglomerating the particles together by stirring to give homogeneous agitation. A smooth, preferably cylindrical stirrer is employed. In an important application fatty material such as fat or fatty acid mixtures in liquid phase, optionally dissolved in a solvent is cooled to, precipitate a fraction during homogeneous agitation to agglomerate the crystals as the precipitate. An unusually good filtration rate is possible even with very, heavy crops of crystals.

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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 April 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 6, 1977
GrantedApril 14, 1981
Term endedApril 14, 1998
Patent numberCA 1099281 A
Classification (IPC)C11B3/00 +1 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedJan 6, 1977Patent grantedApril 14, 1981Term endedApril 14, 1998

Sources & verification

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