Double balanced mixer
CA 2323023 A1 · Owner: Amachi, Nobumitsu · Inventors: Higashikawa, Yoshikuni; Amachi, Nobumitsu; Fujiwara, Hiroki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A double-balanced mixer includes a first pair of differential amplifiers, in which first electrodes of the first and second transistors are connected to a current source, and a first input signal is applied to second electrodes of the first and second transistors a second, pair of differential amplifiers in which the first, electrodes of the third and fourth transistors are connected to a third electrode of the first transistor and a second, input signal is applied to the second electrode of the third and fourth transistors, a third pair of differential amplifiers, in which the first electrodes of the fifth and sixth transistors are connected to the third electrode of the second transistor, …
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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 October 6, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 6, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 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.