Individually wrapped sanitary napkin
CA 2177671 C · Owner: Uni-Charm Corporation · 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 in which a napkin includes a napkin body and a pair of wings extending from transversely opposite side edges of the napkin body. The napkin body is folded longitudinally thereof in a three layer overlapping relationship and the wings are also folded onto a top surface of the napkin body. Release sheets are releasably bonded onto adhesive zones provided on back surfaces of the napkin body and the wings respect-, ively. A wrapping sheet is also folded together with the napkin body so as to wrap the napkin body as well as the wings, wherein the respective release sheets are fixedly bonded to an inner surface of the wrapping sheet so that the wrapping …
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 May 11, 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.