Electron-emitting source, electron-emitting module, and method of manufacturing electron-emitting source
CA 2335213 C · Owner: Yotani, Junko · Inventors: Uemura, Sashiro; Murakami, Hirohiko; Nagasako, Takeshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electron-emitting source includes a substrate and a coating film. The substrate is made of a material containing a metal serving as a growth nucleus for nanotube fibers as a main component and has a plurality of through holes. The coating film is constituted by nanotube fibers formed on a surface of the substrate and wall surfaces of the through holes. A method of manufacturing an electron-emitting source is also disclosed.
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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 February 9, 2001 and granted September 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2023.
- 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.