Coordinates input device
CA 2082136 C · Owner: Hashimoto, Katsuhiko · Inventors: Shiraishi, Naoki; Hashimoto, Katsuhiko; Tsujioka, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To present a coordinates input device simplified in construction and outstandingly improved in utility. In a panel member of a coordinates input device a first input, unit and a second input unit are set on a pair of transparent electrodes and the first input unit allows to input by a member of a relatively large pressing pressure per unit area by using a tapered pen piece. The second input unit allows to input by pressing with a member of a relatively small pressing pressure per unit area such as the finger, not limited to the pen member. To present a coordinates input device enhanced in the reading precision of pressing position by accurately measuring the pressing level at the pressing …
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 November 4, 1992 and granted January 6, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 4, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 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.