Method for forming probe and apparatus therefor
CA 2045878 C · Owner: Yamano, Akihiko · Inventors: Kuroda, Ryo; Yamano, Akihiko; Kawase, Toshimitsu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Information reading and/or inputting apparatus has a probe, an electrodes, a detector a position, controller and a probe and portion forming device. By positioning the probe close to an information medium, information reading/inputting is effected in the apparatus. A voltage is applied to the probe through the electrode. Information on distance between the electrode and the probe is detected by the detector and whereby the relative position of the probe to the electrode is controlled by the position controller. The end portion of the probe is reformed in such a manner that a voltage is applied to the end portion of the probe through the electrode under controlling the relative position of …
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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 26, 1991 and granted August 19, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2013.
- 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.