Antireflection coated refractory metal matched emitters for use in thermophotovoltaic generators
CA 2402825 C · Owner: Jx Crystals Inc. · Inventors: Fraas, Lewis M.; Avery, James E.; Samaras, John E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Thermophotovoltaic (TPV) electric power generators have emitters (7) with infrared (IR) outputs matched with usable wavelengths for converter cells. The emitters (7) have durable substrates (4) optional refractory isolating layers , (6) conductive refractory metal or inter-metallic emitter layers (2) and , refractory metal oxide antireflection layers (8). SiC substrates have tungsten or TaSi2 emitter layers and 0.14 micron HfO2 ZrO2, Al2O2, Ta2O5 and TiO2 , antireflection layers used as IR emitters for GaSb converter cells in TPV generators.
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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 June 20, 2000 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2022.
- 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.