Odour absorbing agent
CA 2332490 A1 · Owner: Galley, Edward · Inventors: Galley, Edward; De Graaf, Thalie Paulina; Butcher, Kate Elizabeth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a composition comprising an acceptable diluent or carrier and high surface area zinc oxide having a surface area between 30 , m2/g and 100 m2/g and a particle size between 0.1 and 200 µm said high , surface area zinc oxide being present in an amount sufficient to absorb odour. The compositions may be for cosmetic or oral use and may be used to treat bad breath and body odour in humans.
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 May 21, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2021.
- 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.