Disposable diaper
CA 2281978 C · Owner: Uni-Charm Corporation · Inventors: Mishima, Yoshitaka; Suzuki, Naomi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diaper 1 is folded along a first folding guide line X1 extending in a transverse direction of the diaper 1 so as to divide its longitudinal dimension in two toward the outer surface of a backsheet 3, then along a pair of second folding guide lines X2 extending in parallel to each other in the transverse direction of the diaper and lying between the first folding guide line X1 and longitudinally outer ends 11 12 of front and rear waist regions 20, 22 toward an outer, surface of a topsheet 2 and finally along a pair of third folding guide lines Y1 extending in parallel to each other in a longitudinal direction of the diaper 1 along transversely opposite side edges of an absorbent core 4 …
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 September 7, 1999 and granted March 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 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.