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Expired Canadian patentCanada

Multilanguage optimizing compiler using templates in multiple pass code generation

CA 2081475 C · Owner: Blickstein, David Scott · Inventors: Hobbs, Steven O.; Blickstein, David Scott; Murphy, Dennis Joseph

CIPO record

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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 compiler framework uses a generic "shell" or control and sequencing mechanism, and a generic back end (where the code generator is target-specific). The generic back end includes the functions of optimization register and memory allocation, and code generation. The shell may be executed on various host computers and the code generation function of the back end may be targeted for any of a number of computer architectures. A front end is tailored for each different source language, such as Cobol, Fortran Pascal, C, C+ +, Ada, etc. The front end scans and parses the source code modules, and generates from them an intermediate language ("IL") representation of the programs expressed in 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

  • Filed February 18, 1992 and granted May 5, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 18, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 18, 1992
GrantedMay 5, 1998
Term endedFebruary 18, 2012
Patent numberCA 2081475 C
Classification (IPC)G06F9/45

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedFeb 18, 1992Patent grantedMay 5, 1998Term endedFeb 18, 2012

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