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Expired Canadian patentCanada

Air deodorizer composition and method

CA 1279577 C · Owner: Brown, Raymond S. · Inventors: Winston, Anthony E.; Usen, Norman; Lawson, Frederick W.

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Abstract From the Canadian patent

Title: AIR DEODORIZER COMPOSITION AND METHOD ABSTRACT, An air deodorizer, and a method for deodorizing rooms therewith, utilizing an aerosol of a solution containing from 2-25% by weight of non-toxic non-oxidizing, deodorizing agent, said solution constituting liquid droplets having a weight average droplet size of less than 50 microns, more than 90% of said droplets having a size, by count, of less than 10 microns.

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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 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 2008.
  • 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 12, 1986
GrantedJanuary 29, 1991
Term endedJanuary 29, 2008
Patent numberCA 1279577 C
Classification (IPC)A61L9/01 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 12, 1986Patent grantedJan 29, 1991Term endedJan 29, 2008

Sources & verification

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