Information recording/reproduction apparatus and method for recording and/or reproducing information onto and/or from recording medium using probe electrodes
CA 2069452 C · Owner: Shido, Shunichi · Inventors: Shido, Shunichi; Sakai, Kunihiro; Oguchi, Takahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Information recording/reproducing apparatus and method by use of probe electrodes are disclosed. In this method information to be recorded on a, recording medium is encoded. The encoded information is distributed to a plurality of probe electrodes. The plurality of probe electrodes are driven on the basis of the distributed information so as to record the information on the recording medium. In reproduction, the information recorded on the recording medium is read out from the recording medium by use of the plurality of probe electrodes. The information read out from the recording medium is stored by use of the plurality of probe electrodes. The stored information is decoded to reproduce …
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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 22, 1992 and granted February 3, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 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.