Waste disposal apparatus
CA 2227071 C · Owner: Nakano, Hisashi · Inventors: Nakano, Hisashi; Michibata, Masatoshi; Kishi, Tomomi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a waste disposal apparatus comprising: a container main body which includes an introduction opening at a top wall portion of the container main body and a discharge opening at a bottom wall portion of the container main body; a cylindrical body which is disposed within the container main body and is formed by an elastic material; and an exit portion opening/closing device which selectively holds between a closed state, in which an exit portion of the cylindrical body is pressed and sealed, and an opened state, in which the exit portion of the cylindrical body is opened and the waste accumulated within the cylindrical body is discharged to the outer side of the …
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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 January 15, 1998 and granted June 4, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 2020.
- 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.