Disposable diaper
CA 2260347 C · Owner: Uni-Charm Corporation · Inventors: Otsubo, Toshifumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable diaper 1 includes a briefs-type cover component 2 having an elastic stretchability in vertical direction of the diaper 1 and an absorbent component 3 including topsheet 31 and backsheet 32 both being not elastically stretchable and a liquid-absorbent core 33 disposed therebetween. The absorbent component 3 is suspended inside the cover component 2 by suspender means 22A 22B made of non-stretchable sheets and having pleats adapted to be flattened out in a vertical direction of the diaper 1.
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 January 25, 1999 and granted February 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 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.