Gel composition for topical application
CA 1099637 A · Owner: Purdue Frederick Company (Canada) Ltd. (The) · Inventors: Leslie, Stewart T.; Rhodes, Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to gel compositions which are suitable for topical application to the skin or hair the com-, positions containing as gel forming components an anionic surfactant, a nonionic surfactant and a polar solvent such as water. The composition also includes an active ingredient for, example an agent for the treatment of parasitic infestations of the skin. The ratio of anionic surfactant to nonionic surfactant is preferably between about 1:3 and 3:1 and the amount of the surfactants in the total gel composition is preferably between about 20-60% by weight.
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
- Granted April 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 21, 1998.
- 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.