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Expired Canadian patentCanada

Memory cartridge and data processing apparatus

CA 1330596 C · Owner: Nakanishi, Yoshiaki · Inventors: Nakagawa, Katsuya; Nakanishi, Yoshiaki

CIPO record

Overview

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

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Abstract From the Canadian patent

A memory cartridge comprises a case and a printed, circuit board housed in the case is connected to a data processing unit including a microprocessor when the memory cartridge is loaded therein. A memory cooperating with the data processing unit is installed on the printed circuit board, and a memory area of the memory is divided into a plurality of banks. A multi-memory controller installed on the printed circuit board includes a plurality of registers into which data representing bank change-over conditions given from the microprocessor are loaded. An address for changing-over the memory bank is outputted in response to the content of at least one of a plurality of registers. Thus by …

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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 July 5, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 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.
FiledOctober 27, 1987
GrantedJuly 5, 1994
Term endedJuly 5, 2011
Patent numberCA 1330596 C
Classification (IPC)G06F12/06 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedOct 27, 1987Patent grantedJuly 5, 1994Term endedJuly 5, 2011

Sources & verification

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