Process and apparatus for the cosmetic treatment of acne vulgaris
CA 2352763 A1 · Owner: Kohler, Wolfgang · Inventors: Kohler, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a process for the cosmetic treatment of acne vulgans by irradiation of the affected skin areas with light two emission spectra are used one in the blue , region (A) from 400 to 450 nm the other in the red region (B) from 580 to 659 nm. The resulting spectrum is adapted to the action spectrum for the inactivation of the propionibacterium acne. It has a biostimulating effect on the skin cells.
Read the whole patent
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 December 4, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2020.
- 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.