Controlled topical application of bioactive reagent
CA 1266432 C · Owner: Kendall Company (The) · Inventors: Lipshitz, Harold M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel compositions for topical application of a water-insoluble bioactive reagent, e.g. a pesticide comprising, an aqueous emulsion of a polymer swellable by the sebum and other "skin oils" and which will agglomerate or coagulate near the skin, the polymer having the bioactive agent encapsulated or dispersed therein; and novel methods employing the same for controlled release of the bioactive reagent over an extended period or time.
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 March 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 2007.
- 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.