Patent Yard Sign in
Expired Canadian patentCanada

Lipoprotein adsorbent for use in extracorporeal circulation treatment and process for preparing thereof

CA 1252716 A · Owner: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha · Inventors: Tani, Nobutaka

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

A lipoprotein adsorbent for use in extracorporeal circulation treatment which is made of a water-insoluble porous hard gel which has an exclusion limit value from 106 to 109 measured by using glubular proteins and comprises a polymer having hydroxy group in at least a part of the molecule, at least a part of hydroxy groups on the surface of said gel being converted to sulfates. By using the adsorbent of the present invention, LDL and VLDL can be selectively and effectively removed from the body fluids of the patient. Further the adsorbent of the present invention can be prepared in a lower cost than the adsorbent based on the principle of the affinity chromatography in which a, relatively …

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 April 18, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 18, 2006.
  • 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 16, 1985
GrantedApril 18, 1989
Term endedApril 18, 2006
Patent numberCA 1252716 A
Classification (IPC)B01J20/32 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedOct 16, 1985Patent grantedApril 18, 1989Term endedApril 18, 2006

Sources & verification

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