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Expired Canadian patentCanada

Method and apparatus for detection and purification of proteins and antibodies

CA 1047918 A · Owner: General Electric Company · Inventors: Giaever, Ivar

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Abstract From the Canadian patent

Method and apparatus for the detection and purification of proteins and antibodies based upon the effect that any arbitrary protein will adsorb onto a substrate in a monomolecular layer only but that a, specific antibody (or antigen) for such arbitrary protein will bond thereto to from a bi-molecular protein layer on the substrate is disclosed. In practicing this invention, a first layer of protein is adsorbed onto a substrate and the coated substrate is then exposed to a solution suspected of containing the specific antibody (or antigen) of interest. The substrate is then examined to determine whether a monomolecular or bimolecular layer of protein is adhering thereon. Optical electrical, …

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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 February 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 6, 1979
Term endedFebruary 6, 1996
Patent numberCA 1047918 A
Classification (IPC)G01N21/01 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedFeb 6, 1979Term endedFeb 6, 1996

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