Microwave fet
CA 2033380 A1 · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Shiga, Nobuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a dual gate FET of this invention the number of, points for supplying signal to a first gate electrode and the number of points for supplying signal to a second gate electrode are set to be optimal values so that a noise index is minimized. A difference in electrical length between each signal supply point of each of the first and second gate electrodes and the corresponding gate input terminal has a negligible magnitude with respect to a quarter wavelength of an input signal applied to the corresponding gate input terminal. The dual gate FET has a low-noise arrangement, and a microwave can be applied to either one of of the first and second gate electrodes thereby, obtaining, e.g. a …
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 28, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 2012.
- 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.