Disposable diaper
CA 2266287 C · Owner: Uni-Charm Corporation · Inventors: Yoshioka, Toshiyasu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable diaper includes barrier cuffs 19 around wearer's legs. Each of the barrier cuffs longitudinally extends on an inner surface of the disposable diaper 1 and includes a supporting wall section 16 adapted to rise on the inner surface of the diaper and a sealing surface zone 20 which includes a first overhead section 17 extending inwards from the supporting wall section 16 and a second overhead section 18 extending outwards from the supporting wall section 16. A first elastic member extending along an inner edge of the sealing surface zone 20 in operative association with the first overhead section 17 has an elongation stress higher than that of a second elastic member extending …
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 March 23, 1999 and granted June 10, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 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.