Disposable diaper
CA 2249782 C · Owner: Sayama, Yasushi · Inventors: Sayama, Yasushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable diaper includes a main body 1 and a supplemental member 2, the main body 1 being formed on its inner surface in its transversely middle zone with a cavity 5 adapted to receive excretion, for example feces. The, cavity 5 is defined by a pair of side walls 41 spaced apart from each other by a predetermined distance in the transversely middle zone of the main body 1 and extending longitudinally of the main body 1, and a top wall 30 extending between distal edges 41A of the respective side walls 41. The top wall 30 is formed with openings 31 32, adapted to guide feces and urine, respectively and elastic, members 43 are secured to the supplemental member 2 in the proximity of upper …
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 October 2, 1998 and granted November 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2020.
- 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.