Contact touchscreen with an improved insulated spacer arrangement
CA 2124337 C · Owner: Kent, Joel C. · Inventors: Kent, Joel C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A contact sensor (8) comprises a first sheet (10) of flexible material and second sheet (24). The sheets (10 24) are capable of, being energized to establish an electrical potential thereon. The two sheets (10, 24) are formed of materials that tend to stick together. To keep the sheets apart, a plurality of substantially uniform discrete insulating islands (40) are used. By the use of a non-square insulating island spacing pattern with the island spacing satisfying rigorous criteria, the two sheets (10 24) can be , prevented from sticking together without unduly increasing the amount of force required to activate the device (8). The sensor (8) is particularly useful as a transparent …
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 17, 1992 and granted September 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 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.