Expired Canadian patentCanada
Bentonite as odour control material
CA 2197648 C · Owner: Procter & Gamble Gmbh · Inventors: Schone, Rainer Walter Max
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An absorbent article such as a panty liner (1) has incorporated therein a bentonite clay (4) as an odour control material for decreasing odours associated with bodily fluids.
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 28, 1995 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 28, 1995
GrantedJuly 31, 2001
Term endedAugust 28, 2015
Patent numberCA 2197648 C
Classification (IPC)A61L15/18 +1 more
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.