Uncooled ybacuo thin film infrared detector
CA 2212002 C · Owner: Research Corporation Technologies, Inc. · Inventors: Butler, Donald P.; Celik-Butler, Zeynep; Pao-Chuan, Shan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermal detector (B) includes a transducer layer (2) of semiconducting yttrium barium copper oxide which is sensitive at room temperature to radiation and provides detection of infrared radiation. In a gate-insulated transistor embodiment a layer of ferroelectric, semiconducting yttrium barium copper oxide (34) forms a gate insulator layer and increases capacitance of the transistor or latches of the transistor according to the polarization direction of the ferroelectric layer.
Read the whole patent
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 29, 1995 and granted October 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 29, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 29, 2017.
- 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.