Disposable diapers
CA 2107747 C · Owner: Uni-Charm Corporation · Inventors: Kido, Tsutomu
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 pair of projecting flaps inside longitudinally opposite ends of the diaper and projecting a certain distance in order to make a wearer feel comfortable. Elastic members are bonded under tension in longitudinal direction of the diaper to, any one of portions of top- and backsheets extending beyond transversely opposite side edges of an absorbent core so that these elastic members lie within a necessary extent defined 30 mm or more inside the longitudinally opposite ends of the diaper with the intermediate section of these elastic members extending along a crotch zone. The topsheet and/or the backsheet are folded along the respective elastic members toward the …
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 5, 1993 and granted July 21, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 5, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 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.