FO

Fukuo Ogawa

ST Sumco Techxiv: 18 patents #3 of 144Top 3%
SU Sumco: 8 patents #36 of 464Top 8%
Overall (All Time): #158,241 of 4,157,543Top 4%
25
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
12252803 N-type silicon single crystal production method, n-type silicon single crystal ingot, silicon wafer, and epitaxial silicon wafer Koichi Maegawa, Yasuhito Narushima, Yasufumi KAWAKAMI, Ayumi Kihara 2025-03-18
11702760 N-type silicon single crystal production method, n-type silicon single crystal ingot, silicon wafer, and epitaxial silicon wafer Koichi Maegawa, Yasuhito Narushima, Yasufumi KAWAKAMI, Ayumi Kihara 2023-07-18
11639560 Deposit removing device and deposit removing method Takuya Yotsui, Koichi Maegawa 2023-05-02
11377755 N-type silicon single crystal production method, n-type silicon single crystal ingot, silicon wafer, and epitaxial silicon wafer Koichi Maegawa, Yasuhito Narushima, Yasufumi KAWAKAMI, Yuuji Tsutsumi 2022-07-05
11242617 Method for producing silicon single crystal Koichi Maegawa, Yasuhito Narushima, Yasufumi KAWAKAMI 2022-02-08
10916425 Method for manufacturing silicon single crystal, flow straightening member, and single crystal pulling device Yasuhito Narushima, Koichi Maegawa, Yasufumi KAWAKAMI 2021-02-09
10294583 Producing method and apparatus of silicon single crystal, and silicon single crystal ingot Yasuhito Narushima, Shinichi Kawazoe, Masahiro Irokawa, Toshimichi Kubota 2019-05-21
10233562 Method for producing single crystal, and method for producing silicon wafer Yasuhito Narushima, Toshimichi Kubota, Masayuki Uto 2019-03-19
10233564 Manufacturing method of monocrystalline silicon and monocrystalline silicon Yasuhito Narushima, Shinichi Kawazoe 2019-03-19
9212431 Silicon single crystal pulling device and graphite member used therein Shinichi Kawazoe, Yasuhito Narushima, Tsuneaki Tomonaga, Toshimichi Kubota 2015-12-15
9074298 Processes for production of silicon ingot, silicon wafer and epitaxial wafer, and silicon ingot Shinichi Kawazoe, Toshimichi Kubota, Yasuhito Narushima 2015-07-07
8961686 Method of manufacturing monocrystal, flow straightening cylinder, and monocrystal pulling-up device Shinichi Kawazoe, Yasuhito Narushima, Toshimichi Kubota 2015-02-24
8920561 Silicon single crystal pull-up apparatus that pulls a doped silicon single crystal from a melt Yasuhito Narushima, Shinichi Kawazoe, Toshimichi Kubota, Tomohiro Fukuda 2014-12-30
8888911 Method of producing single crystal silicon Masayuki Uto, Tuneaki Tomonaga, Toshimichi Kubota, Yasuhito Narushima 2014-11-18
8852340 Method for manufacturing single crystal Yasuhito Narushima, Shinichi Kawazoe, Toshimichi Kubota 2014-10-07
8840721 Method of manufacturing silicon single crystal Yasuhito Narushima, Toshimichi Kubota 2014-09-23
8747551 Process for production of silicon single crystal, and highly doped N-type semiconductor substrate Shinichi Kawazoe, Yasuhito Narushima, Toshimichi Kubota 2014-06-10
8715416 Doping apparatus for simultaneously injecting two dopants into a semiconductor melt at different positions and method for manufacturing silicon single crystal using the doping apparatus Yasuhito Narushima, Shinichi Kawazoe, Toshimichi Kubota 2014-05-06
8580032 Method for manufacturing single crystal Yasuhito Narushima, Shinichi Kawazoe, Toshimichi Kubota 2013-11-12
8574363 Process for production of silicon single crystal, and highly doped N-type semiconductor substrate Shinichi Kawazoe, Yasuhito Narushima, Toshimichi Kubota 2013-11-05
8535439 Manufacturing method for silicon single crystal Yasuhito Narushima, Toshimichi Kubota, Shinichi Kawazoe, Tomohiro Fukuda 2013-09-17
8518180 Silicon single crystal pull-up apparatus having a sliding sample tube Yasuhito Narushima, Shinichi Kawazoe, Toshimichi Kubota, Tomohiro Fukuda 2013-08-27
8283241 Dopant implanting method and doping apparatus Yasuhito Narushima, Shinichi Kawazoe, Toshimichi Kubota 2012-10-09
8110042 Method for manufacturing single crystal Yasuhito Narushima, Shinichi Kawazoe, Tsuneaki Tomonaga, Yasuyuki Ohta, Toshimichi Kubota +1 more 2012-02-07
8043428 Process for production of silicon single crystal Shinichi Kawazoe, Toshimichi Kubota, Yasuhito Narushima 2011-10-25