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Expired Canadian patentCanada

Disc player and disc loading device

CA 2033430 C · Owner: Yamamori, Eiji · Inventors: Takagi, Koji; Yamamori, Eiji

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A disc player for reading out and reproducing information signals recorded on an information disc such as an optical disc, and displaying the read out and reproduced information signals on display section, and a loading device for loading an information disc, such as an optical disc or a disc table, in, which both a disc proper and a disc cartridge comprised of a disc and a cartridge accommodating such disc may be loaded on the disc table. The disc player enables the information on the disc to be read out and reproduced and the read-out and reproducing information to be displayed as a visual information and is, reduced in size so as to be portable. The loading device enables both the disc …

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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 December 28, 1990 and granted April 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 28, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 28, 1990
GrantedApril 4, 2000
Term endedDecember 28, 2010
Patent numberCA 2033430 C
Classification (IPC)G11B7/00 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedDec 28, 1990Patent grantedApril 4, 2000Term endedDec 28, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.