Clothing capable of exposing inside thereof
CA 2195491 C · Owner: Tanaka, Kumiko · Inventors: Tanaka, Kumiko; Tokura, Shigeko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A piece of clothing includes an upper envelope portion two, leg portions extending downward from the envelope portion and separated from each other at a crotch, and a flap portion. The flap portion is formed by two elongate cuts each of which extends from the envelope portion into a respective one of the leg portions. The flap portion is engageable with the envelope portion via an engaging device but disengageable therefrom for hinging around the crotch to open the crotch.
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 January 20, 1997 and granted March 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 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.