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Expired Canadian patentCanada

Device and method for whole blood separation and analysis

CA 1248434 A · Owner: Smithkline Diagnostics, Inc. · Inventors: Rapkin, Myron C.; Shockey, David R.; Schoengold, Ronald J.

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Abstract From the Canadian patent

A method and device for separating blood into fluid and cellular fractions for diagnostic tests. The whole blood is introduced to a carrier containing a layer of carbohydrate which results in the rapid separation of the fluid from the cellular fractions. In a preferred embodiment, the device is fabricated in a sandwich design containing layers of carbohydrate and reagent material between two layers of plastic.

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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 January 10, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 10, 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.
FiledApril 7, 1986
GrantedJanuary 10, 1989
Term endedJanuary 10, 2006
Patent numberCA 1248434 A
Classification (IPC)G01N33/48 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedApril 7, 1986Patent grantedJan 10, 1989Term endedJan 10, 2006

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