Projective capacitive touchscreen
CA 2375442 A1 · Owner: Kent, Joel · Inventors: Ravid, Arie; Kent, Joel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A capacitive touchscreen using two sets of electrodes fabricated in a single plane. Individual electrodes of each set of electrodes are formed of a continuous length of conductive material such as fine wire or conductive coatings. The overall electrode pattern is such that there is no overlap thus eliminating the need for insulating layers and/or coatings. Preferably the pattern comprises a plurality of approximately triangular electrodes formed , such that the base of one triangularly shaped electrode is adjacent to the apex of the next. A touchscreen sensor employing the disclosed sensing electrodes can use any of a variety of readout systems such as a frequency domain approach, a …
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 June 1, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 1, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 2022.
- 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.