Light quenchable thyristor device
CA 1302521 C · Owner: Tamamushi, Takashige · Inventors: Nishizawa, Jun-Ichi; Tamamushi, Takashige; Nonaka, Ken-Ichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thyristor device comprising an SI (Static induction) thyristor or beam base thyristor and an SIT (static induction transistor) or SIT-mode bipolar transistor connected to the gate of the thyristor in order to make it possible to turn-on and-off a direct current and voltage at a high speed with a light. In the thyristor part the, SIT gate structure or SIT-mode beam base structure exists in the first gate or base region or second gate or base region so that, at the time of the triggering operation a very high switching efficiency will be obtained.
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
- Granted June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
- 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.