Disposable diaper
CA 2292168 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 includes transversely opposite side edge regions thereof and the side edge regions are folded to form pleats 18 18 each presenting a Z-shaped cross section and an body waste disposal sheet 2 is bonded along its transversely opposite side edge regions to upper surfaces of the pleats 18 18 so that the disposal sheet 2 may be separated from the diaper as the transversely opposite side edge regions of the diaper are held and bilaterally pulled by a person having charge of body waste disposal with his or her hands.
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 December 14, 1999 and granted January 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 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.