Method of making disposable absorbent article with integral landing zone
CA 2265978 C · Owner: Weirich, David Michael · Inventors: Kline, Mark James; Johnson, Kevin Charles; Weirich, David Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of making a disposable absorbent article including a backsheet (24) having an integral landing zone (40). The method generally includes the following steps. A first web of material preferably a nonwoven web is , provided. At least a portion of the first web of material is mechanically prestrained to provide the first web with elongated raised portions (44). A , second web of material is provided in contact with the first web and the webs are joined except in a predetermined integral landing zone (40). The unjoined portion of the first web includes the portion of the first web having the elongated, raised portions (44) which act to accept and entangle the engaging elements of …
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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 19, 1997 and granted November 4, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 19, 2019.
- 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.