Bacteriostatic water and method for producing the same
CA 2022223 A1 · Owner: Nippon Sanso Kabushiki Kaisha · Inventors: Niwada, Atsushi; Kaneko, Kenzo; Ebisawa, Kenichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to bacteriostatic water and to a method of producing bacteriostatic water and is, characterized by the steps: a) heating unprocessed water to produce primary water; b) filtering the primary water in order to remove bacteria and dust to produce secondary water; and c) exposing the secondary water to oxygen gas to produce bacteriostatic water. In this invention oxygen gas, is used not only as a biostatic treating agent but also as, an aerosol propellant. The container is filled with the product water, on the product water is bacteriostatically stable for an extended period.
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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 July 31, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.