Liquid discharging head, head cartridge, liquid discharging device, recording system, head kit, and fabrication process of liquid discharging head
CA 2210377 C · Owner: Kashino, Toshio · Inventors: Ishinaga, Hiroyuki; Asakawa, Yoshie; Kashino, Toshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid discharging head comprises a discharge opening for discharging a liquid, a bubble generation region for generating a bubble in a liquid and a, movable member disposed so as to face the bubble generation region and arranged as displaceable between a first position and a second position more distant from the bubble generation region than the first position, wherein the movable member has the narrowest space in the bubble generation region and is displaced from the first position to the second position by pressure based on generation of the bubble in the bubble generation region, and wherein the bubble is made to expand greater downstream than upstream with respect to a direction …
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 July 11, 1997 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 2019.
- 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.