Inventor
OKUMURA KEIJI
JP87 patents
⚠️ This page may combine multiple inventors who share the name “OKUMURA KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI ELECTRIC CO LTD
23 patentsUS10236372B2Mar 19, 2019
Silicon carbide semiconductor device and method of manufacturing silicon carbide semiconductor device
FUJI ELECTRIC CO LTD7 citations83
US10002952B2Jun 19, 2018
Silicon carbide semiconductor device and method of manufacturing silicon carbide semiconductor device
FUJI ELECTRIC CO LTD7 citations83
US12040361B2Jul 16, 2024
Semiconductor device
FUJI ELECTRIC CO LTD2 citations73
US11257945B2Feb 22, 2022
Semiconductor device and method of manufacturing semiconductor device
FUJI ELECTRIC CO LTD3 citations73
US10840369B2Nov 17, 2020
Semiconductor device and method of manufacturing same
FUJI ELECTRIC CO LTD2 citations73
US10600864B2Mar 24, 2020
Semiconductor device
FUJI ELECTRIC CO LTD2 citations73
US10529848B2Jan 7, 2020
Insulated-gate semiconductor device and method of manufacturing the same
FUJI ELECTRIC CO LTD6 citations73
US10468509B2Nov 5, 2019
Semiconductor device and method of manufacturing semiconductor device
FUJI ELECTRIC CO LTD2 citations73
US10164021B2Dec 25, 2018
Silicon carbide semiconductor device
FUJI ELECTRIC CO LTD2 citations73
US12272748B2Apr 8, 2025
Semiconductor device having base region beneath trench gate
FUJI ELECTRIC CO LTD0 citations63
US12074200B2Aug 27, 2024
Insulated-gate semiconductor device and method of manufacturing the same
FUJI ELECTRIC CO LTD0 citations63
US11984498B2May 14, 2024
Semiconductor device and method of manufacturing same
FUJI ELECTRIC CO LTD0 citations63
US11908929B2Feb 20, 2024
Semiconductor device
FUJI ELECTRIC CO LTD1 citations63
US11798993B2Oct 24, 2023
Insulated-gate semiconductor device and method of manufacturing the same
FUJI ELECTRIC CO LTD0 citations63
US11637199B2Apr 25, 2023
Semiconductor device and method of manufacturing semiconductor device
FUJI ELECTRIC CO LTD0 citations63
US11631668B2Apr 18, 2023
Current concentration-suppressed electronic circuit, and semiconductor module and semiconductor apparatus containing the same
FUJI ELECTRIC CO LTD0 citations63
US11610969B2Mar 21, 2023
Insulated-gate semiconductor device
FUJI ELECTRIC CO LTD0 citations63
US11489071B2Nov 1, 2022
Semiconductor device
FUJI ELECTRIC CO LTD0 citations63
US11177350B2Nov 16, 2021
Insulated-gate semiconductor device and method of manufacturing the same
FUJI ELECTRIC CO LTD0 citations63
US11139377B2Oct 5, 2021
Method of manufacturing silicon carbide semiconductor device
FUJI ELECTRIC CO LTD1 citations63
US10833189B2Nov 10, 2020
Semiconductor device
FUJI ELECTRIC CO LTD1 citations63
US10777678B2Sep 15, 2020
Semiconductor device
FUJI ELECTRIC CO LTD1 citations63
US10483390B2Nov 19, 2019
Insulated gate semiconductor device and method of manufacturing same
FUJI ELECTRIC CO LTD1 citations63
ROHM CO LTD
11 patentsUS10896896B2Jan 19, 2021
Semiconductor device comprising PN junction diode and schottky barrier diode
ROHM CO LTD4 citations84
US10559552B2Feb 11, 2020
Semiconductor device comprising PN junction diode and Schottky barrier diode
ROHM CO LTD5 citations84
US9917074B2Mar 13, 2018
Semiconductor device comprising PN junction diode and schottky barrier diode
ROHM CO LTD6 citations84
US9461021B2Oct 4, 2016
Electronic circuit comprising PN junction and schottky barrier diodes
ROHM CO LTD6 citations84
US7773381B2Aug 10, 2010
Semiconductor device
ROHM CO LTD4 citations74
US11894349B2Feb 6, 2024
Semiconductor device comprising PN junction diode and Schottky barrier diode
ROHM CO LTD2 citations73
US9379634B2Jun 28, 2016
Semiconductor device
ROHM CO LTD3 citations73
US12341135B2Jun 24, 2025
Semiconductor device comprising PN junction diode and Schottky barrier diode
ROHM CO LTD0 citations63
US11502063B2Nov 15, 2022
Semiconductor device comprising PN junction diode and Schottky barrier diode
ROHM CO LTD0 citations63
US10074634B2Sep 11, 2018
Semiconductor device comprising PN junction diode and schottky barrier diode
ROHM CO LTD1 citations63
US9099331B2Aug 4, 2015
Semiconductor device
ROHM CO LTD2 citations63
OKUMURA KEIJI
5 patentsUS9245956B2Jan 26, 2016
Electronic circuit comprising unipolar and bipolar devices
OKUMURA KEIJI10 citations92
US8152159B2Apr 10, 2012
Sheet feeding device and image forming apparatus including a controlled elevator mechanism
OKUMURA KEIJI7 citations84
US8970020B2Mar 3, 2015
Semiconductor device
OKUMURA KEIJI5 citations73
US9136378B2Sep 15, 2015
Semiconductor device and manufacturing method for same
OKUMURA KEIJI5 citations72
US8608150B2Dec 17, 2013
Sheet post-processing apparatus with branched holding path
OKUMURA KEIJI2 citations63
KYOCERA MITA CORP
5 patentsUS6353727B1Mar 5, 2002
Image forming apparatus having staple processing section
KYOCERA MITA CORP20 citations90
US6315288B1Nov 13, 2001
Sheet post-processing apparatus
KYOCERA MITA CORP40 citations88
US6089558AJul 18, 2000
Sheet handling unit after image formation
KYOCERA MITA CORP6 citations74
US7938396B2May 10, 2011
Sheet feeding device and image forming apparatus including sheet feeding device with a sheet feeding preparation period
KYOCERA MITA CORP6 citations63
US7883084B2Feb 8, 2011
Sheet feeding device and image forming apparatus with warm air unit for blowing air toward upper face of sheet stack
KYOCERA MITA CORP5 citations63
KYOCERA DOCUMENT SOLUTIONS INC
3 patentsUS9434560B2Sep 6, 2016
Sheet feeder and image forming apparatus
KYOCERA DOCUMENT SOLUTIONS INC3 citations73
US9207620B2Dec 8, 2015
Combined units and image forming system
KYOCERA DOCUMENT SOLUTIONS INC4 citations73
US8844921B2Sep 30, 2014
Sheet post-processing device, and image forming apparatus including sheet post-processing device
KYOCERA DOCUMENT SOLUTIONS INC2 citations63
MITA INDUSTRIAL CO LTD
2 patentsOTSUKA TAKUKAZU
1 patentShowing the top 50 of 87 patents by PatentIndex Score.