Cantilever type probe, and scanning tunnel microscope and information processing apparatus employing the same
CA 2066478 C · Owner: Shimada, Yasuhiro · Inventors: Kasanuki, Yuji; Hirai, Yutaka; Nakayama, Masaru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cantilever type probe comprises a, cantilever-shaped displacement element and a tip which displacement element has a first electrode layer a, first piezoelectric material film and a second piezoelectric material film which films are laminated on respective sides of the first electrode layer and, a second electrode layer and a third electrode layer which layer are laminated on respective surfaces of the piezoelectric material films, and which tip is connected with a leader electrode located at a free end of the surface of the displacement element; wherein in the width direction of the cantilever both ends of the first electrode layer are more protruded out than each end of the second 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 April 21, 1992 and granted December 9, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2014.
- 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.