Micro-electromechanical device, liquid discharge head, and method of manufacture therefor
CA 2309232 C · Owner: Ozaki, Teruo · Inventors: Yamanaka, Akihiro; Imanaka, Yoshiyuki; Ozaki, Teruo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A micro-electromechanical device comprises a movable member having a fixedly supporting portion and movable portion, and a substrate for having the movable member which is supported in a state having a specific gap with the substrate. For this device a metallic, layer which provides the gap for the movable portion is covered by the fixedly supporting portion of the movable member, and remains to be used as a wiring layer. The wiring layer is electrically connected with a plurality of wirings provided for the substrate. With the structure thus arranged the electric, resistance is made significantly small. The electrical efficiency is enhanced accordingly. Also the, apparatus that adopts this …
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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 May 24, 2000 and granted November 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2022.
- 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
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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.