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Expired Canadian patentCanada

Device and process for separating the liquid part from the solid part of seeds and fruit

CA 1103987 A · Owner: Helwig, Emmy · Inventors: Helwig, Emmy

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

A process and device for separating the liquid part from the solid part of seeds, fruit and/ or plants wherein, the raw material is fed into a pressure vessel which is pressurised with gas selected in accordance with the properties of the material, the pressure in the vessel is suddenly released whereby the cells of the material are ruptured from the inside outwards by the equalising Or the pressure inside the cells on pressure release the, resultant disintegrated mash is then concentrated in a continuous leaching process with cold liquid and after, separating the unusable solids the resultant liquid is, subjected to appropriate aftertreatment for recovering the final product until the pure …

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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 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 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.
FiledJuly 15, 1977
GrantedJune 30, 1981
Term endedJune 30, 1998
Patent numberCA 1103987 A
Classification (IPC)A23B7/00 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedJuly 15, 1977Patent grantedJune 30, 1981Term endedJune 30, 1998

Sources & verification

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