Unitary manual and software for computer system
CA 2081610 C · Owner: Ohara, Makoto · Inventors: Ohara, Makoto; Sugiura, Shinichirou
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electronic book which can store, in a ROM a, computer program, is integrated with graphic and textual material on a series of pages. Various input devices such as a finger, a light pen, a touch pen, etc. can be utilized with a sensing circuit combined with the page for inputting data into the computer system. The computer system can display this information in both an audio and visual manner.
Read the whole patent
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 28, 1992 and granted February 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 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.
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.