Optical card, a card holder and an apparatus for recording, reproducing, and erasing information on and from the optical card
CA 1333094 C · Owner: Katayama, Hiroyuki · Inventors: Katayama, Hiroyuki; Ohta, Kenji; Matoba, Hirotsugu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical card comprising an optical storage medium and a single or a plurality of members made of a magnetic material which are incorporated with the optical card; a card holder for holding an optical card comprising a table for supporting the optical card and a single member or a plurality of members made of a magnetic material for attracting the optical card; and an apparatus for recording and reproducing information on and from the optical card comprising a card holder a light-irradiating unit for emitting light beams onto the optical storage medium of the optical card and a, drive unit for relatively moving the card holder and the light-irradiating unit for tracking with which the, …
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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
- Granted November 15, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 15, 2011.
- 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.