Inventor
TORII KATSUYUKI
JP15 patents
⚠️ This page may combine multiple inventors who share the name “TORII KATSUYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SANKEN ELECTRIC CO LTD
13 patentsUS7709931B2May 4, 2010
Trenched semiconductor device
SANKEN ELECTRIC CO LTD8 citations82
US9742389B2Aug 22, 2017
Semiconductor device and control method thereof
SANKEN ELECTRIC CO LTD2 citations63
US7847316B2Dec 7, 2010
Semiconductor device and its manufacture
SANKEN ELECTRIC CO LTD4 citations60
US9263572B2Feb 16, 2016
Semiconductor device with bottom gate wirings
SANKEN ELECTRIC CO LTD2 citations57
US7161230B2Jan 9, 2007
Insulated gate bipolar transistor having a high switching speed and method for fabricating the same
SANKEN ELECTRIC CO LTD1 citations51
US7067900B2Jun 27, 2006
Insulated gate bipolar transistor having a reduced tail current and method of fabricating the same
SANKEN ELECTRIC CO LTD0 citations51
US12362744B2Jul 15, 2025
Semiconductor device
SANKEN ELECTRIC CO LTD0 citations50
US11916137B2Feb 27, 2024
Semiconductor device
SANKEN ELECTRIC CO LTD0 citations50
US7880222B2Feb 1, 2011
Semiconductor device having plural regions and elements with varying areas depending on the region
SANKEN ELECTRIC CO LTD0 citations40
US9627519B2Apr 18, 2017
Semiconductor device
SANKEN ELECTRIC CO LTD0 citations39
US9117872B2Aug 25, 2015
Semiconductor device and method for manufacturing the semiconductor device
SANKEN ELECTRIC CO LTD0 citations39
US8384123B2Feb 26, 2013
Semiconductor device and method for manufacturing same
SANKEN ELECTRIC CO LTD0 citations39
US7893498B2Feb 22, 2011
Semiconductor device
SANKEN ELECTRIC CO LTD0 citations39