Method for producing liquid ejecting head and liquid ejecting head obtained by the same method
CA 2174182 C · Owner: Sugitani, Hiroshi · Inventors: Kashino, Toshio; Koyama, Shuji; Kimura, Makiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method produces a liquid ejecting head having an ejection outlet for ejecting a liquid a heat generating element for applying thermal energy to said liquid a liquid flow path comprised of a first path portion in fluid communication with said ejection outlet and a second path portion disposed below said first path portion and provided with said heat generating element in a bottom surface thereof a partition wall for partitioning said liquid flow path into said first path portion and second path portion and a movable member disposed above said heat generating element in said portion wall and arranged as displaceable to a side of the first path portion in accordance with a bubble generated …
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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 April 15, 1996 and granted August 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 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.