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Expired Canadian patentCanada

Enzymatic neutralization of hydrogen peroxide

CA 1261254 A · Owner: Minnesota Mining And Manufacturing Company · Inventors: Hendrickson, Carol E.; Mencke, Arlene J.; Uy, Rosa

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Abstract From the Canadian patent

A method for disinfecting a medical device comprising the steps of immersing a medical device in a hydrogen peroxide solution for a time sufficient to disinfect said device, decomposing any residual hydrogen peroxide by use of a catalytically effective amount of a protein capable of decomposing hydrogen peroxide said, protein being immobilized on a composite article said, composite article comprising in sequence a support a layer, of protein immobilizer compound and a biologically active, protein. The surface modification treatment is a gelled network of inorganic oxide particles or a plasma treatment.

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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 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 27, 1986
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1261254 A
Classification (IPC)A61L2/18 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedOct 27, 1986Patent grantedSep 26, 1989Term endedSep 26, 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.