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Expired Canadian patentCanada

Memory access control apparatus

CA 1286790 C · Owner: Nec Corporation · Inventors: Yamada, Ikuo

CIPO record

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Abstract From the Canadian patent

A memory access control apparatus has a plurality of request reception sections, respectively connected to a plurality of units for supplying requests for receiving a, block read request from the corresponding units and, dividing the block read request into a plurality of read requests and outputting the divided read requests a, selector for selecting one of outputs from the request reception sections and outputting the selected output a, request processing section for processing the request output from the selector and outputting reply data to a corresponding unit, and a main memory connected to the request processing section. The request reception section has a counter for counts the read …

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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 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 20, 1987
GrantedJuly 23, 1991
Term endedJuly 23, 2008
Patent numberCA 1286790 C
Classification (IPC)G06F12/08 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedNov 20, 1987Patent grantedJuly 23, 1991Term endedJuly 23, 2008

Sources & verification

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