Disposable diaper
CA 2510035 A1 · Owner: Uni-Charm Co. Ltd. · Inventors: Sugito, Tomoko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A diaper (1A) comprises a liquid absorbent core (2) extending between front and rear trunk regions (5, 7), a liquid-permeable first sheet (3) covering the upper and lower surfaces (11, 12) of the core (2) and a liquid-impermeable , second sheet (4). In the diaper (1A) a dehiscence region (13) longitudinally extending through and between the upper and lower surfaces (11 12) of the , core (2) is formed in the front trunk region (5) and in a below-the-crotch region (6). The cover upper section (14) of the first sheet (3) extends from the upper surface (11) of the core (2) through the dehiscence section (13) to emerge below the dehiscence section (13) while the cover lower section (15) , …
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 December 5, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2025.
- 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.