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Expired Canadian patentCanada

Virucidal low toxicity compositions

CA 2002856 C · Owner: Wave Energy Systems, Inc. · Inventors: Boucher, Raymond Marcel Gut

CIPO record

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

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Abstract From the Canadian patent

Very potent, stable, odorless, and phenol-free virucidal solutions are active at high dilution when used for surface decontamination of animate and inanimate objects. The virucidal compositions described are efficacious in a matter of minutes against both the lipophilic and the more resistant hydrophilic viruses. The three active ingredients in these virucidal compositions are the glutaraldehyde monomer in equilibrium with its hydrates and polymers hydrogen-bonded glycol molecules to eliminate aldehydes odor and, an anionic surfactant of the alkyl sulfate alkyl, sulfonate, alcohol sulfate or alkyl aryl sulfonate type. A preferred anionic surfactant would be the Sodium Dodecyl Sulfate (SDS), …

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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 14, 1989 and granted July 1, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 14, 2009.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2011.
  • 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 14, 1989
GrantedJuly 1, 1997
Term endedNovember 14, 2009
Patent numberCA 2002856 C
Classification (IPC)A01N35/02 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedNov 14, 1989Patent grantedJuly 1, 1997Term endedNov 14, 2009

Sources & verification

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