A liquid discharging method, a liquid discharge head, and a liquid discharge apparatus
CA 2239768 C · Owner: Masuda, Kazuaki · Inventors: Sugitani, Hiroshi; Yoshihira, Aya; Kubota, Masahiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid discharging method for discharging liquid, which uses the pressure exerted at the time of creating each of air bubbles in liquid in an air bubble generating area, is arranged to provide two areas for generating each of them in such a manner as to enable these areas to face each other at least partly hence, discharging liquid by means of the pressure thus exerted in the two air bubble generating areas. In this way, it becomes possible to increase the amount of discharging liquid more, as well as to enhance the durability of the movable members, while stabilizing the discharge of liquid from each of the discharge openings.
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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 June 5, 1998 and granted December 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 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.