Disposable diapers
CA 2099074 C · Owner: Uni-Charm Corporation · Inventors: Kido, Tsutomu; Inoue, Kohji; Igaue, Takamitsu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable diaper having a stretchable sheet laid on a basic diaper structure and this sheet is provided at locations corresponding to urinary organs and anus with openings, respectively, which are independent from each other so as to prevent excrement from spreading over the crotch zone of wearer and particularly to prevent excrement from clinging to urinary and genital organs.
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 June 23, 1993 and granted November 18, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 2015.
- 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.