Memory cartridge and game apparatus using the same
CA 1294050 C · Owner: Nishizawa, Kenji · Inventors: Okada, Satoru; Nishizawa, Kenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A memory cartridge (10) is attachably/detachably loaded to a game machine (22) which includes a microprocessor (24) and a working RAM (26) provided in association with the microprocessor. When the memory cartridge is loaded to the game machine a program ROM, (18) included in the memory cartridge is connected to the microprocessor and the working RAM through data bus and address bus such that the data can be communicated between them. When a game is terminated a password is, generated in accordance with a program stored in the program ROM in advance by modifying game status data including data of score, power or energy and the stage number which are stored in the working RAM. The password …
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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 January 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 7, 2009.
- 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.