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Hiroyuki Doi

HI Hitachi: 30 patents #925 of 28,497Top 4%
MS Mitsubishi Hitachi Power Systems: 10 patents #27 of 970Top 3%
PA Panasonic: 9 patents #2,933 of 21,108Top 15%
Sumitomo Electric Industries: 7 patents #3,987 of 21,551Top 20%
BA Babcock-Hitachi: 2 patents #128 of 415Top 35%
TW The Japan Steel Works: 2 patents #158 of 643Top 25%
JC Jms Co.: 1 patents #82 of 184Top 45%
MI Mitsui Toatsu Chemicals, Incorporated: 1 patents #880 of 1,543Top 60%
NS Nippon Steel: 1 patents #2,111 of 4,423Top 50%
NJ Nuvoton Technology Corporation Japan: 1 patents #117 of 222Top 55%
HL Harison Toshiba Lighting: 1 patents #39 of 82Top 50%
CP Chugai Pharmaceutical: 1 patents #730 of 1,238Top 60%
TT Toshiba Lighting & Technology: 1 patents #279 of 486Top 60%
TC Tower Partners Semiconductor Co.: 1 patents #95 of 183Top 55%
KO Koganei: 1 patents #41 of 103Top 40%
Overall (All Time): #33,500 of 4,157,543Top 1%
65
Patents All Time

Issued Patents All Time

Showing 25 most recent of 65 patents

Patent #TitleCo-InventorsDate
12419119 Solid-state imaging device Masahiro Oda, Hiroki Takahashi, Hirohisa Otsuki 2025-09-16
12317533 Semiconductor device for power amplification Akihiko Nishio 2025-05-27
11046772 Process of production with controlled copper ions Seiko YAMAMOTO, Isamu Terashima 2021-06-29
10378366 Steam turbine rotor blade and method for manufacturing steam turbine rotor blade Shinji OIKAWA, Masahiko Arai, Hideo Yoda 2019-08-13
10260357 Steam turbine rotor, steam turbine including same, and thermal power plant using same Shinji OIKAWA, Shinya Imano, Akira Yoshinari 2019-04-16
9878403 Ni-based alloy for welding material and welding wire, rod and power Shinya Imano, Jun Sato 2018-01-30
9873930 Precipitation hardening martensitic stainless steel and steam turbine component made thereof Shinji OIKAWA, Hideo Yoda, Masahiko Arai 2018-01-23
9567656 Nickel based alloy for forging Shinya Imano, Jun Sato 2017-02-14
9541281 High-temperature piping product and method for producing same Shinya Imano, Jun Sato 2017-01-10
9388702 Precipitation hardening martensitic stainless steel, and steam turbine long blade, steam turbine, and power plant using the same Shinji OIKAWA, Hideo Yoda, Masahiko Arai 2016-07-12
9320154 Method of manufacturing an interlayer connection substrate Akira Soeda, Chiko Yorita, Shinichirou Tooya, Takayuki Ono, Mitsuru Takahira +4 more 2016-04-19
9315372 Grease pump unit Hirokazu Tanaka 2016-04-19
9263482 Solid-state image pickup device Mitsuo Yasuhira, Ryohei Miyagawa, Yoshiyuki OHMORI 2016-02-16
9200524 Steam turbine rotor Masahiko Arai, Shinji OIKAWA, Kenichi Murata 2015-12-01
9197830 Solid-state imaging device and driving method of solid-state imaging device Mitsuyoshi Mori, Yusuke SAKATA, Yutaka Hirose, Ryohei Miyagawa, Masafumi Tsutsui 2015-11-24
9062362 Precipitate hardening stainless steel and long blade using same for steam turbine Shinji OIKAWA, Hideo Yoda, Masahiko Arai 2015-06-23
8956471 Nickel based alloy for forging Shinya Imano, Jun Sato 2015-02-17
8883072 Ni-base alloy, high-temperature member for steam turbine and welded rotor for turbine using the same, and method for manufacturing the same Jun Sato, Shinya Imano 2014-11-11
8864919 Nickel based forged alloy, gas turbine member using said alloy and gas turbine using said member Jun Sato, Shinya Imano, Takashi Shibayama 2014-10-21
8813361 Gas turbine blade and manufacturing method thereof Shinya Imano, Kunihiro Ichikawa, Katsumi Tanaka 2014-08-26
8801373 High-reliability turbine metal sealing material Yoshitaka Kojima, Hideyuki Arikawa, Akira Mebata, Hajime Toriya, Kenjiro Narita 2014-08-12
8747733 Precipitation hardenable martensitic stainless steel and steam turbine blade using the same Shinji OIKAWA, Hideo Yoda, Masahiko Arai 2014-06-10
8723239 Solid-state imaging element Ryohei Miyagawa, Hitoshi Kuriyama 2014-05-13
8685316 Ni-based heat resistant alloy, gas turbine component and gas turbine Jun Sato, Shinya Imano 2014-04-01
8596982 Turbine rotor Eiji Nishioka, Masahiko Arai 2013-12-03