Surface electron display device and fabrication process
CA 2274664 A1 · Owner: Advanced Vision Technologies, Inc. · Inventors: Potter, Michael D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device useful as a display element has an electron emitter (40) and an anode (30) disposed to receive electrons emitted from the emitter. The anode has surface portions differing in resistivity providing an electron sink portion , (80) at the surface portion of lowest resistivity. A preferred embodiment has a lateral field-emission electron emitter (10) and has an anode formed by processes specially adapted to provide anode portions of differing resistivity, including the electron sink portion (80). The electron sink portion is preferably disposed at a position laterally spaced apart from the emitting tip of the device's electron emitter. In a particularly preferred fabrication …
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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 December 30, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 2019.
- 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.