Electron emission device
CA 2533191 C · Owner: Yeda Research And Development Company Ltd. · Inventors: Halahmi, Erez; Naaman, Ron
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrons' emission device (10) is presented. The device comprises an electrodes' arrangement (12) including at least one Cathode electrode (12A) and at least one Anode electrode (12B) the Cathode and Anode electrodes being arranged in a spaced-apart relationship; the device: being configured to expose said at least one Cathode electrode to exciting illumination to thereby cause electrons' emission from said Cathode electrode the device being , operable as a photoemission switching device.
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 July 22, 2004 and granted November 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2026.
- 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.