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Expired Canadian patentCanada

Compositions containing chlorine dioxide and their preparation

CA 1307204 C · Owner: Hutchings, Richard S. · Inventors: Hutchings, Richard S.

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Abstract From the Canadian patent

A chlorine dioxide-containing composition comprising sodium chlorite; an initiator selected from the group consisting of (A) a thickening agent; (B) a colorant, (C) a perfume and mixtures thereof; chlorine dioxide at an antimicrobial concentration and, water, the sodium chlorite and the initiator being present in the composition in an amount adapted to form interactively said antimicrobial chlorine oxide concentration said composition, having a viscosity suitable to maintain the thus-formed chlorine dioxide at a steady-state concentration. DR-5176

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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 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 18, 1989
GrantedSeptember 8, 1992
Term endedSeptember 8, 2009
Patent numberCA 1307204 C
Classification (IPC)A01N59/00 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedMay 18, 1989Patent grantedSep 8, 1992Term endedSep 8, 2009

Sources & verification

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