Telescoping drinking straw with enhanced seal and rigidity means
CA 2010608 C · Owner: Kimura, Tsutomu · Inventors: Hoshi, Katsumasa; Kimura, Tsutomu; Nomura, Yukihiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A telescopic straw is disclosed which comprises an outer member and an inner member slidably fitted in the outer member. A flange-like rigid stopper is provided on the inner member at the open rear end thereof. The inside diameter of the open front end of the outer member is smaller than the outside diameter of the stopper so that the stopper is stopped from removal forwardly through the open front end by being engaged with the open front end. The outer member is provided with an engagement portion located behind the open front end and projecting inward in the radial direction of the outer member so as to prevent the inner member from moving backward past the engagement portion after the …
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 February 21, 1990 and granted December 27, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2012.
- 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.