Method of hair removal by transcutaneous application of laser light
CA 2348788 A1 · Owner: Stewart, Bob W. · Inventors: Jochum, Frances R.; Stewart, Bob W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of hair removal, used primarily for cosmetic purposes comprising the , transcutaneous use of laser light having a wavelength which targets the keratin component of hair, thus destroying the air by photothermolysis without damage to surrounding skin or tissue; this primary method may be supplemented by the use of intrafollicular hair removal methods utilizing a second wavelength of light produced by the same source used to generate the primary light wavelength.
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 October 28, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 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.