Individually wrapped sanitary napkin
CA 2177656 C · Owner: Mizutani, Satoshi · Inventors: Mizutani, Satoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An individually wrapped sanitary napkin compris- ing a sanitary napkin folded with a back surface thereof lying outside and with one of the longitudinally opposite ends of the napkin underlying the other end thereof and a wrapping sheet folded so as to wrap the napkin with one of the longitudinally opposite ends underlying the other end thereof. A portion of the wrapping sheet is integrally fastened at a predetermined region to an outer surface of a release sheet which protectively covers an adhesive zone on the back surface of the napkin. One longitudinal end of the wrapping sheet is releasably fastened to an outer surface of the portion of the wrapping sheet which has been integrally …
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 29, 1996 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 29, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 2018.
- 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.