Electrophoretic display panel with interleaved local anode
CA 2114229 C · Owner: Copytele, Inc. · Inventors: Schubert, Frederic E.; Krusos, Denis A.; Disanto, Frank J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improvement to an electrophoretic display having a cathode/grid/local anode matrix (18, 20, 28) and a remote anode (26) and to the method for making the display includes forming the local anode lines (28) in the same plane as the grid lines (20) from the same material and in the same fabricating step. The local anode lines (28) are insulated from the grid lines (20) and are interleaved therewith, each being formed on a common layer of photoresist. It is preferred that each grid line be associated with one local anode line, that the grid lines (20) have lines (30) and that the local anode lines (28) be disposed between the tines (30).
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 17, 1992 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 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.