Portable communication device with removable electrophoretic display
CA 2178804 C · Owner: Krusos, Denis A. · Inventors: 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
The present invention is a modular electrophoretic display (20) that can be selectively attached or detached from a larger assembly (10). The modular electrophoretic display includes a small low voltage battery (80) that provides a small bias to the anode (45) cathode (49) and, grid electrode (47) of the electrophoretic display when no other power is present. As a result of the bias of the battery the electrophoretic, display is capable of retaining any image formed upon the display by the larger assembly. Consequently different displays with differing, images can be removed from or added to, the larger assembly as needed. This promotes ease in photocopying the electrophoretic display and …
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 January 11, 1995 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 11, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 11, 2017.
- 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.