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Expired Canadian patentCanada

Apparatus for separation of blood component

CA 1305052 C · Owner: Naoi, Keiji · Inventors: Iwata, Katsuhiko; Naoi, Keiji

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

An apparatus for the separation of blood components is disclosed which comprises a housing provided with an inlet for a hemocyte suspension and an outlet for the hemocyte suspension and at least one filter material selected from the group consisting of woven fabrics and knitted fabrics both made of yarns obtained by twisting a plurality of fibers substantially incapable of degenerating the hemocyte suspension and packed in the housing. Owing to the configuration the, filter material is enabled to retain the hemocyte suspension safely therein even when it is packed in high density and the apparatus is consequently enabled to effect the removal of leukocytes and platelets by a simple …

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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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 6, 1987
GrantedJuly 14, 1992
Term endedJuly 14, 2009
Patent numberCA 1305052 C
Classification (IPC)A61M1/22 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedOct 6, 1987Patent grantedJuly 14, 1992Term endedJuly 14, 2009

Sources & verification

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