A manually operated liquid discharge container having a finger knob
CA 2075176 C · Owner: Yoshino Kogyosho Co. Ltd. · Inventors: Saito, Tadao; Hashimoto, Kazunori; Nozawa, Takamitsu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herein disclosed is a liquid injection container which comprises: a container body; a cylinder depending into the container body from a cap-shaped member fitted on the outer face of the mouth/neck portion of the container body; and an actuator having a stem erected through the top wall of the cap-shaped member from a cylindrical piston which is, fitted in the cylinder, and a head fitted on the upper end of the stem and having a nozzle opened forward. The actuator is moved up and down with respect to the cylinder for sucking a liquid in the container body into the cylinder and discharging the liquid in the cylinder out of the nozzle through the stem. A finger knob attached to the top face of …
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 4, 1990 and granted June 15, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 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.