Method of forming micropores in skin
CA 2389626 A1 · Owner: Wu, Junru · Inventors: Wu, Junru; Weimann, Ludwig J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of forming pores (600) in the stratum corneum (210) includes applying an aqueous material (123) to a surface area of the stratum corneum followed by the application of sonic and/or ultrasonic radiation (112) to said aqueous material wherein said sonic and/or ultrasonic radiation has a frequency in the range of 10KHz and 5 MHz and is applied at an intensity for a period of time , and at a distance from said surface area of the stratum corneum effective to generate cavitation bubbles (500) on said surface area of the stratum corneum wherein said cavitation bubbles collapse and transfer their energy into the stratum corneum causing the formation of pores. Large size molecules ( …
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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, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 1, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 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.
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.