Optoelectronic material, device using the same, and method for manufacturing optoelectronic material
CA 2228507 C · Owner: Takeyama, Shigeru · Inventors: Yoshida, Takehito; Matsuda, Yuji; Mutoh, Katsuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates an optoelectronic material comprising a uniform medium with a controllable electric characteristic; and semiconductor ultrafine particles dispersed in the medium and having a mean particle size of 100 nm or less, and an application device using the same. This invention also relates to a method of manufacturing an optoelectronic material by irradiating a laser beam onto a first target of a semiconductor material, placed in a reaction chamber in low pressure rare gas ambient, and a second target of a medium material with a controllable electric characteristic, placed in the reaction chamber condensing/growing a semiconductor material ablated from the first target to be …
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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 May 26, 1997 and granted August 14, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 26, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 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.