TK

Takashi Kumagai

SE Seiko Epson: 52 patents #186 of 7,774Top 3%
Mitsubishi Electric: 26 patents #631 of 25,717Top 3%
SO Sony: 14 patents #3,108 of 25,231Top 15%
HI Hitachi: 5 patents #7,555 of 28,497Top 30%
Applied Materials: 2 patents #3,641 of 7,310Top 50%
TL Tokyo Electron Limited: 2 patents #2,602 of 5,567Top 50%
MA Makita: 2 patents #391 of 770Top 55%
MK Mitsubishi Denki K.K.: 1 patents #164 of 577Top 30%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
HE Hitachi Vlsi Engineering: 1 patents #390 of 666Top 60%
ML Mitsubishi Electric Lighting: 1 patents #8 of 29Top 30%
Overall (All Time): #12,830 of 4,157,543Top 1%
106
Patents All Time

Issued Patents All Time

Showing 1–25 of 106 patents

Patent #TitleCo-InventorsDate
12381033 Laminated coil, coil device, and power conversion device Kenta FUJII, Tomohito FUKUDA, Shoichiro NISHIZAWA, Koshin Uomoto 2025-08-05
12224677 Power source device Taichiro Tamida, Shingo Tsuda, Daisuke Takauchi 2025-02-11
12119155 Reactor Tomohito FUKUDA, Hideo Noda, Kazuyuki Shibata, Masanori Kageyama 2024-10-15
12073983 Power conversion device Kenta FUJII, Tomohito FUKUDA 2024-08-27
11948718 Reactor Atsushi Hosokawa, Tomohito FUKUDA, Kenji NISHIZAKA, Shohei HIGASHITANI 2024-04-02
11658089 Semiconductor device Shuji Wakaiki, Shota Sato, Kenta FUJII 2023-05-23
11515183 Substrate processing system Suguru Motegi, Akira Kodashima 2022-11-29
11495480 Substrate processing system Suguru Motegi, Akira Kodashima, Keisuke YOSHIMURA 2022-11-08
11350517 Circuit device and power conversion device Hiroyuki Yahara, Kenta FUJII, Yuji Shirakata, Tomohito FUKUDA, Koji Nakajima 2022-05-31
11206729 Power circuit device Shota Sato, Koji Nakajima, Yuji Shirakata 2021-12-21
11094452 Power converter Koji Nakajima, Jun Tahara 2021-08-17
11049640 Circuit device and power converter Kenta FUJII, Koji Nakajima, Yuji Shirakata, Jun Tahara 2021-06-29
11031177 Power converter Koji Nakajima, Jun Tahara 2021-06-08
10529478 Air core type reactor unit and electric power supply equipment having an air core type reactor unit Toshihiro Yoshida, Hajime Nakatani, Daisuke Takauchi, Kenji Shimohata, Taichiro Tamida 2020-01-07
10491180 Board-type noise filter and electronic device Kazuya Yamamoto 2019-11-26
10404178 Insulation type step-up converter Koji Nakajima, Yuji Shirakata, Yujiro Kido 2019-09-03
10199159 Insulation type step-down coverter Koji Nakajima, Yuji Shirakata, Yujiro Kido 2019-02-05
9973733 Communication system, communication method, distribution apparatus, distribution method and terminal apparatus Izuru Tanaka 2018-05-15
9960697 Insulation type step-down converter Koji Nakajima, Yuji Shirakata, Yujiro Kido 2018-05-01
9941044 Insulation type step-down converter Koji Nakajima, Yuji Shirakata, Yujiro Kido, Kenji NISHIZAKA 2018-04-10
9530456 Data processing system having data reproduction independent of data processing Toshiyuki Arai, Hajime Inai, Hiroaki Sato, Fumitake Yodo, Masami Oyama 2016-12-27
8913334 Data processing system having data reproduction independent of data processing Toshiyuki Arai, Hajime Inai, Hiroaki Sato, Fumitake Yodo, Masami Oyama 2014-12-16
8896316 Device having capacitive loads and abnormality detecting method thereof Kazutoshi Kurahashi, Taichiro Tamida, Hajime Nakatani, Daisuke Takauchi 2014-11-25
8710750 Light source lighting device including a constant-current supply that is connected to a light source and supplies a constant current of a substantially constant magnitude to the light source, and luminaire Takafumi Nonaka, Yuichiro Ito, Haruka Kinoshita, Shinsuke Funayama, Takashi Maeda 2014-04-29
8559202 Power conversion apparatus Akihiko Iwata, Makoto Seto, Masaki Yamada, Shigeki Harada, Noriyuki Matsubara 2013-10-15