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Expired Canadian patentCanada

Methods of making an antibacterial device

CA 2313440 C · Owner: Bioenvision Acquisition Corp. · Inventors: Milder, Fredric L.

CIPO record

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Drawings and full text

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

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Abstract From the Canadian patent

Methods are provided for making an antibacterial device in which antibacterial properties are provided by an iontophoretic material incorporated into the device. In one embodiment a flowable iontophoretic material is extruded into a predetermined configuration. In another embodiment a flowable iontophoretic material is applied onto a structure and the flowable iontophoretic material is caused to become non-flowable. In yet another embodiment a first material having a first galvanic potential and a second material having a second galvanic potential are each incorporated into a flowable conductive, base material to form a flowable iontophoretic material and the flowable iontophoretic material …

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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

  • Filed November 10, 1993 and granted September 3, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 10, 1993
GrantedSeptember 3, 2002
Term endedNovember 10, 2013
Patent numberCA 2313440 C
Classification (IPC)A61N1/30

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedNov 10, 1993Patent grantedSep 3, 2002Term endedNov 10, 2013

Sources & verification

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