Expired Canadian patentCanada
Disposable diapers
CA 2116642 C · Owner: Kimura, Noriyuki · Inventors: Fujioka, Yoshihisa; Mukai, Hirotomo; Kimura, Noriyuki
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable diaper comprises an auxiliary pad being deformable to present an inverted .OMEGA.-shaped cross-section and bonded at its central portion to a crotch zone of said diaper 1.
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 February 28, 1994 and granted June 30, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 28, 1994
GrantedJune 30, 1998
Term endedFebruary 28, 2014
Patent numberCA 2116642 C
Classification (IPC)A61F13/15
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.