Computer system and method of modifying program in the computer system
CA 2267541 A1 · Owner: Ogata, Hitoshi · Inventors: Ogata, Hitoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A computer system comprises a microcomputer and external memory means in communication with the microcomputer for storing various programs and various items of data. The microcomputer comprises a nonerasable ROM having stored therein a basic program and basic data indispensable to the operation of the system a RAM for, storing various programs or various kinds of data a CPU for, executing programs and processing data and an interface, circuit for providing communications with external devices. The external memory means has stored therein a modification program for modifying a portion of program data contained in the basic program, and a modification starting address indicating a location in …
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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 March 30, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 30, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2021.
- 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.