Lecithin-based microemulsions containing proteolytic enzymes and method for permanent enzymic depilation
CA 2255649 C · Owner: Xenakis, Aristotelis · Inventors: Avramiotis, Spyridon; Protopapa, Evangelia; Sekeris, Konstantinos
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention refers to depilatory preparations containing: proteolytic enzymes solubilized in microemulsions, formed with lecithin aliphatic , hydrocarbon, alipathic alcohol and buffer solution pH 7 to 9 value , corresponding to the pH range near the optimum pH value for the catalytic activity of the proteolytic enzymes, to be applied for permanent enzymic depilation. The application of these preparations will assure as shown by our , experimental studies more permanent depilation than the one resulting from other depilatory methods. The application of these preparations is suitable for every type of skin (fatty-resistant or dry-sensitive). The present invention introduces the use of …
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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 May 19, 1997 and granted April 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.