Antiperspirant stick containing a macroporous polymer
CA 2050259 A1 · Owner: Dow Corning Corporation · Inventors: Abrutyn, Eric S.; Gressani, Tina M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An antiperspirant stick product containing as components at least one material such as astringent antiperspirant compounds, a volatile silicone a waxy, material, emollients, perfumes coloring agents and other, ingredients normally used in making stick products. The improvement is directed to incorporating into the stick product as one component a macroporous highly crosslinked polymer. The macroporous polymer is free of "in Situ" entrapped active ingredients.
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 August 29, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 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.