Micro-displacement element, and scanning tunneling microscope and information processing apparatus using same
CA 2069702 C · Owner: Kasanuki, Yuji · Inventors: Kasanuki, Yuji; Yagi, Takayuki; Yamamoto, Keisuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A micro-displacement element comprises a unimorph cantilever having a piezoelectric thin film a pair of electrodes between which the piezoelectric thin film is sandwiched, and an elastic thin film. One end of the cantilever is supported by a support and, the other end thereof is provided with a probe. The micro-displacement element can be used particularly as an array of plural elements, for an information processing apparatus in which the element faces to a recording medium such that an information recording pulse voltage or an information reproducing bias voltage can be applied to between the probe and the recording medium.
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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 27, 1992 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 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.