A method for manufacturing an ink jet head, and an ink jet head
CA 2179239 C · Owner: Inada, Genji · Inventors: Ohkuma, Norio; Inada, Genji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for manufacturing an ink jet head comprises a first step of arranging on a substrate a passage molding material to form ink paths conductively connected to discharge ports for discharging ink a, second step of arranging on the substrate an edge portion molding material in the vicinity of the passage molding material, a third step of arranging on the substrate a wall formation material to cover the passage molding material and the edge portion molding material, and a fourth step of forming the paths with the wall formation material by removing the passage molding material from the substrate. With this method it is possible to manufacture an ink jet head having an ink chamber and …
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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 17, 1996 and granted November 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 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.