Manufacturing method of structural parts for wearing products
CA 2015091 C · Owner: Hosagawa, Masashi · Inventors: Hosagawa, Masashi; Nakano, Shoji; Echi, Kozo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention concerns a manufacturing method of the structural parts for wearing products. More specifically it, concerns a manufacturing method of the structural parts of disposable diapers, baby training pants or other wearing, products. A concavoconvex cutting line is applied repetitively in a periodical way in the longitudinal direction of a continuous first web to form the first and the second partial webs; the said first partial web is offset with respect to he said second partial web in the longitudinal direction by a prescribed interval, so that the concave edges and the convex edges of the first and second partial webs are positioned opposite and aligned to each other, …
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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 April 20, 1990 and granted April 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2012.
- 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.