Skin lotion comprising aqueous dispersion of ultra-fine noble metal particles
CA 2465885 A1 · Owner: Hirata, Yoshihiro · Inventors: Ueda, Yoshio; Takase, Hiroaki; Hirata, Yoshihiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous dispersion of ultra-fine noble metal particles is produced by a method which comprises burning a mixed gas of oxygen and hydrogen in a high pressure water, by the use of an apparatus for producing a skin lotion comprising a tank for containing a high pressure water a nozzle for spraying , a mixed gas of oxygen and hydrogen a noble metal rod, an ignition device and a pressure-resistant container having a combustion chamber melting the noble , metal with the resulting combustion gas and dispersing the resulting ultra-, fine particles of the noble metal in water. The aqueous dispersion of ultrafine noble metal particles is used in cosmectics including a skin lotion.
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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 1, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 1, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 2024.
- 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
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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.