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Expired Canadian patentCanada

Broad spectrum decontamination formulation and method of use

CA 2300698 C · Owner: Her Majesty The Queen As Represented By The Minister Of National Defence Of Her Majesty'S Canadian Government · Inventors: Burczyk, Andrew F.H.; Chenier, Claude L.; Purdon, J. Garfield

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

A decontamination formulation is provided which is effective against a broad spectrum of chemical and biological warfare agents and radioactive dusts comprising an active decontamination agent a co-solvent, a buffer system to optimize the initial reaction pH above 8.5 and more preferably in the range of to 11 for favoring oxidation of VX and HD and hydrolysis of G agents and a surfactant similar to fire-fighting foaming agent. Formulations comprise in water by weight, 1 % to 15% of a hydrated chloroisocyanuric acid salt 1% to 10% of a polypropylene glycol co-solvent 1 % to 15% surfactant and a buffer system to initially maintain said formulation at a pH from about 11 to about 8.5 for …

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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 February 14, 2000 and granted October 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 14, 2000
GrantedOctober 7, 2003
Term endedFebruary 14, 2020
Patent numberCA 2300698 C
Classification (IPC)A62D3/30 +1 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedFeb 14, 2000Patent grantedOct 7, 2003Term endedFeb 14, 2020

Sources & verification

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