Thermoelectric transducing material and method of producing the same
CA 2307239 A1 · Owner: Neomax Co. Ltd. · Inventors: Sadatomi, Nobuhiro; Saigo, Tsunekazu; Yamashita, Osamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel silicon-base thermoelectric transducing material containing a P- or Ntype semiconductor obtained by adding various impurities to Si which is , produced with good productivity at low cost and has a stable quality and a high performance index. Generally when various elements are added to Si the , Seebeck coefficient of the material decreases with the carrier concentration until the carrier concentration exceeds 1018 M/m3 and a minimum value of the , Seebeck coefficient is in a range from 1018 to 1019 M/m3. The material of the invention is a P- or N-type semiconductor having a carrier concentration of 1017 to 1020 M/m3 and containing Si and 0.001 to 0.5 atomic % of one or more …
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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 August 5, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 2020.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.