Method for delipidation of skin and cerumen removal
CA 2180944 C · Owner: Sanchez, Robert A. · Inventors: Hendler, Sheldon S.; Sanchez, Robert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the field of skin and hair care products. Uncomplexed or loosely complexed cyclodextrin is the active ingredient of a composition which may be used to remove cerumen from the ear canal or to cleanse the skin or hair.
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 January 12, 1994 and granted August 24, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 12, 2016.
- 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.