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Expired Canadian patentCanada

Digital circuit design assist system for designing hardware units and software units in a desired circuit and method thereof

CA 2108538 C · Owner: Shinde, Hirotake · Inventors: Shinde, Hirotake; Hikono, Atsushi; Nakamichi, Koji

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

This invention relates to a digital circuit design assist system, and is directed to provide a system which independently verifies hardware divided into a plurality of units or the hardware and software, and reduces the design time. This system comprises a functional model storage unit 1 for storing functional models in order to design hardware for a desired digital circuit comprising the hardware alone or the hardware and firmware and, functionally expressing the digital circuit by a hardware description language through a text editor 15 by coding input, logic synthesis means 2 for converting the functional model to a structural model structurally expressed by the hardware description …

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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 October 15, 1993 and granted April 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 15, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2015.
  • 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 15, 1993
GrantedApril 11, 2000
Term endedOctober 15, 2013
Patent numberCA 2108538 C
Classification (IPC)G06F11/26 +1 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedOct 15, 1993Patent grantedApril 11, 2000Term endedOct 15, 2013

Sources & verification

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