Computing system for data processing apparatus
CA 2027231 C · Owner: Takahara, Toshio · Inventors: Takahara, Toshio; Matsumoto, Tohru; Ryu, Tadamitsu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A computing system for a data processing apparatus which carries out a data processing using at least a formula includes a link data file for managing formulas which are described by command names assigned to data elements and operation symbols which define operation contents between the command names an actual, data file for managing actual data in correspondence with the command names in the formulas managed by the link data file, a computing file for managing computing means for computing the operation contents of the operation symbols in the formulas managed by the link data file, and a processing part for specifying a requested formula which is to be computed by referring to the link …
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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 10, 1990 and granted January 11, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.