Antiperspirant with dibenzylidene sorbitol
CA 2310787 A1 · Owner: Schamper, Thomas · Inventors: Albanese, Joseph; Schamper, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention contemplates a translucent preferably clear, anhydrous , gel composition (for example a solid stick soft solid, cream as well as any , form commonly referred to as a gel) especially an antiperspirant stick , composition comprising: (a) dibenzylidene sorbitol; (b) a selected derivatized guar, especially a hydroxy C3-C4 alkyl guar having a level of hydroxyalkylation of 0.4-1.5 molar substitution ("MS"); and (c) a solvent selected so that it will not react with the DBS itself or if an acid catalyst , is present, will not react in the presence of DBS with an acid catalyst such as an antiperspirant active salt.
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 November 18, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 18, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2020.
- 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.