Portable graphic computer apparatus
CA 2023962 C · Owner: Sony Corporation · Inventors: Yasuhara, Nae; Marusawa, Miyuki; Kashii, Masaharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable graphic computer apparatus is comprised of a tablet for inputting coordinates data, a detecting circuit for detecting the coordinates data inputted by the tablet a, video image data forming circuit for forming video image data corresponding to input coordinates based on coordinates data by an output signal from the detecting circuit a, memory for storing the video image data a video signal, generating circuit for generating a video signal from the video image data, an output circuit connected to the video signal generating circuit for outputting the video signal a, cabinet for accommodating therein the above elements and a, plurality of color selecting buttons formed on the …
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 August 24, 1990 and granted February 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 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.