Disposable diaper
CA 2123172 A1 · Owner: Jonker, Johannes Cornelis · Inventors: Jonker, Johannes Cornelis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable diaper provided with a liquid permeable bodyside inner liner and an at least substantially liquid impermeable outer layer, which form a front panel and a rear panel, with a liquid-absorbent batt sandwiched between the inner liner and the outer layer, and with elastic leg openings, which is characterized in that the inner liner and the outer layer are at least substantially made of a cellulosic material of the "wet-strong long fibre" type.
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 May 9, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 9, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 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.
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.