Sweeper device
CA 2193045 C · Owner: Uni-Charm Corporation · Inventors: Murakami, Masaki; Kenmochi, Yasuhiko; Ishikawa, Hiroki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sweeper device comprising a plate-like head a stick, mounted on an upper surface of the head and a sweeping sheet detachably attached to the head to cover a lower surface of the head. The head is provided along and outside at least a pair of side walls extending transversely thereof with elastic side walls so that a sweeping sheet can be attached onto a bottom of the head in a tension state of the sweeping sheet.
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 December 16, 1996 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 16, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 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.