Chemical peeling agent
CA 2383841 C · Owner: Ueda, Setsuko · Inventors: Ueda, Setsuko; Ueda, Kaori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a chemically peeling agent and a method relating thereto. A chemically peeling agent of the present invention contains a , component (A) having the following general formula: B ~ CH2CH2O)m(AO)n - Ha , wherein B is an alcohol residue; AO is an alkylene-oxy group having 3 to 18 carbon atoms; a is an integer of 1 or more;, m is an integer of 4 or more; and n is 0 or an integer of 1 or more;, provided that a molar amount n of the ethylene oxide to be added is a value that amounts to 40% or more of the entire molecular weight of an ethylene oxide chain moiety and a phenol compound (B).
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 September 6, 2000 and granted June 28, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 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.