MA

Masatsugu Arai

HI Hitachi: 18 patents #2,067 of 28,497Top 8%
HC Hitachi Construction Machinery Co.: 11 patents #108 of 1,234Top 9%
HH Hitachi High-Technologies: 3 patents #776 of 1,917Top 45%
HE Hitachi Vehicle Energy: 3 patents #24 of 95Top 30%
HS Hitachi Automotive Systems: 1 patents #965 of 1,636Top 60%
📍 Tsuchiura, JP: #15 of 519 inventorsTop 3%
Overall (All Time): #99,593 of 4,157,543Top 3%
34
Patents All Time

Issued Patents All Time

Showing 1–25 of 34 patents

Patent #TitleCo-InventorsDate
12221774 Operation record analysis system for construction machine Yoshibumi Fukuda, Takuya Naka, Koutarou Masuda 2025-02-11
12187130 Electric vehicle Mitsuhiro KADOTA, Atsushi Kitaguchi, Naoki Fukuda 2025-01-07
11834033 Regenerative braking system and electrically-driven work vehicle using regenerative braking system Mitsuhiro KADOTA, Takayuki Satou, Naoki Fukuda 2023-12-05
11396839 Hydraulic drive fan control device Takaaki Tanaka, Takayuki Sato, Naoki Fukuda, Jun Ikeda, Ryuji Kouno 2022-07-26
11332115 Power regeneration system of work vehicle Shintarou TANAKA, Naoki Fukuda, Takaaki Tanaka, Yukiaki Shimizu 2022-05-17
11173890 Power regeneration system for work vehicle Naoki Fukuda, Yukiaki Shimizu, Takaaki Tanaka, Shintarou TANAKA 2021-11-16
11124075 Electrically driven work vehicle, and wheel electric driving unit Satoru Kaneko, Shinji Sugimoto, Takayoshi Nakamura, Tadashi Osaka, Naoki Fukuda 2021-09-21
10704471 Haulage vehicle Akihiro Nakamura, Naokazu Oda 2020-07-07
10583743 Regenerative braking device and dump truck Tomonori TAKADA, Takanobu Ikari, Takashi Ikimi, Akihiro Nakamura, Naoki Fukuda +1 more 2020-03-10
10107341 Clutch control device for work machine Naoki Fukuda, Tadashi Osaka, Ryuji Kouno, Takanobu Ikari, Takaaki Tanaka 2018-10-23
9804606 Management control device Masaki Kanai, Tomoyuki Hamada, Manabu Katou, Takuya Naka 2017-10-31
9586563 Autonomous moving apparatus and autonomous movement system Masaki Kanai, Ryoko Ichinose, Yukihiko Ono 2017-03-07
9309982 Vehicle device temperature adjustment system Yuki Akiyama, Tadashi Osaka 2016-04-12
8839894 Electric drive system for vehicle Atsushi Yokoyama, Tadashi Osaka, Itsuro Sawada 2014-09-23
8708071 Cooling system for electric vehicle Atsushi Yokoyama, Shingo Nasu 2014-04-29
8568916 Lithium ion secondary battery Kenji Nakai, Akinori Tada, Kinya Aota 2013-10-29
8538653 Brake control apparatus Ayumu Miyajima, Toshiyuki Innami, Kimio Nishino, Norikazu Matsuzaki, Masayuki Kikawa +1 more 2013-09-17
8346436 Driving support system Atsushi Yokoyama, Shinjiro Saito, Tatsuya Yoshida 2013-01-01
7989107 Lithium-ion secondary battery Kenji Nakai, Akinori Tada, Seiichi Sato 2011-08-02
7867644 Secondary battery and secondary battery manufacturing method Kinya Aota, Kenji Nakai, Akinori Tada 2011-01-11
6897403 Plasma processing method and plasma processing apparatus Ryujiro Udo, Motohiko Yoshigai, Masanori Kadotani 2005-05-24
6846363 Plasma processing apparatus and method Hideyuki Kazumi, Tsutomu Tetsuka, Ryoji Nishio, Ken Yoshioka, Tsunehiko Tsubone +4 more 2005-01-25
6838833 Plasma processing apparatus Ryujiro Udo, Naoyuki Tamura, Masanori Kadotani, Motohiko Yoshigai 2005-01-04
6833051 Plasma processing apparatus and method Hideyuki Kazumi, Tsutomu Tetsuka, Ryoji Nishio, Ken Yoshioka, Tsunehiko Tsubone +4 more 2004-12-21
6812725 Semiconductor processing apparatus and wafer sensor module Ryujiro Udo, Manabu Edamura 2004-11-02