Coated cosmetic materials and method of coating cosmetic materials
CA 2052117 A1 · Owner: Herstein, Morris · Inventors: Herstein, Morris
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved coating for cosmetic materials is disclosed. Flouroalkylpolysiloxanes used as coatings for cosmetic powders and microparticulate materials provides the advantages of existing polysiloxane coatings plus provides advantages making the coated materials useful in emulsion systems and alkaline systems even when aged at high temperatures.
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 24, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 2013.
- 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.