MK

Masahiro Koizumi

HI Hitachi: 11 patents #3,813 of 28,497Top 15%
HS Hitachi Tohbu Semiconductor: 8 patents #12 of 223Top 6%
FC Furukawa Rock Drill Co.: 6 patents #1 of 17Top 6%
RT Renesas Technology: 5 patents #592 of 3,337Top 20%
RE Renesas Electronics: 4 patents #1,016 of 4,529Top 25%
HC Hitachi Haramachi Electronics Co.: 3 patents #5 of 64Top 8%
SE Sega Enterprises: 3 patents #74 of 515Top 15%
HI Hirata: 2 patents #40 of 174Top 25%
TO Toyota: 2 patents #10,861 of 26,838Top 45%
Mazda Motor: 2 patents #1,722 of 4,755Top 40%
MM Mitsubishi Materials: 1 patents #812 of 1,543Top 55%
AK Aisan Kogyo Kabushiki Kaisha: 1 patents #344 of 642Top 55%
Nichia: 1 patents #1,005 of 1,531Top 70%
NC Nihon Den-Netsu Keiki Co.: 1 patents #8 of 21Top 40%
NC Nippondenso Co.: 1 patents #1,765 of 3,479Top 55%
RS Renesas Eastern Japan Semiconductor: 1 patents #25 of 82Top 35%
Overall (All Time): #86,306 of 4,157,543Top 3%
38
Patents All Time

Issued Patents All Time

Showing 25 most recent of 38 patents

Patent #TitleCo-InventorsDate
11207769 Hydraulic hammering device — 2021-12-28
11072977 Two-piston hydraulic striking device Toshio Matsuda 2021-07-27
11052524 Hydraulic hammering device — 2021-07-06
11034010 Hydraulic hammering device Tsutomu Kaneko, Toshio Matsuda 2021-06-15
10865857 Accessory drive device for engine Takeyoshi Iwagami, Shota Kabasawa, Ikuma Takahashi, Kenya Ishii 2020-12-15
10493610 Hydraulic hammering device Susumu Murakami, Toshio Matsuda, Tomohiro Goto, Shunsuke Echigoya 2019-12-03
9926998 Piston structure for engine Yasunori Kanda, Tsunehiro Mori, Yasuhiro Sudou, Masakazu Kikuchi, Kazuo Toyoda +7 more 2018-03-27
9672752 Learning assistance server, learning assistance system, and learning assistance program Takahiro Obae, Makoto Miyokawa 2017-06-06
8816411 Mosfet package Ryoichi Kajiwara, Toshiak Morita, Kazuya Takahashi, Munehisa Kishimoto, Shigeru Ishii +5 more 2014-08-26
8793851 Retainer assembling apparatus and retainer assembling method Hiroyuki Shiga, Kotaro Takamura, Yukihiro Kawamoto, Haruo Oka, Koji Matsuda 2014-08-05
8455986 Mosfet package Ryoichi Kajiwara, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto, Shigeru Ishii +5 more 2013-06-04
8183607 Semiconductor device Ryoichi Kajiwara, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto, Shigeru Ishii +5 more 2012-05-22
7985991 MOSFET package Ryoichi Kajiwara, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto, Shigeru Ishii +5 more 2011-07-26
7942216 Drill rod, drill bit, and drilling tool Masaya Hisada, Takashi Suzuki 2011-05-17
7649159 Apparatus and a method of soldering a part to a board Masanari Matsuura, Masaya Tsuruta, Tomoyuki Kubota, Yoshiyuki Nakamura 2010-01-19
7400002 MOSFET package Ryoichi Kajiwara, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto, Shigeru Ishii +5 more 2008-07-15
7394146 MOSFET package Ryoichi Kajiwara, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto, Shigeru Ishii +5 more 2008-07-01
7342267 MOSFET package Ryoichi Kajiwara, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto, Shigeru Ishii +5 more 2008-03-11
7332757 MOSFET package Ryoichi Kajiwara, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto, Shigeru Ishii +5 more 2008-02-19
7141741 Circuit board Kazuji Yamada, Akira Tanaka, Ryuichi Saito, Yasutoshi Kurihara, Tadao Kushima +12 more 2006-11-28
6798072 Flip chip assembly structure for semiconductor device and method of assembling therefor Ryoichi Kajiwara, Toshiaki Morita, Kazuya Takahashi, Asao Nishimura, Masayoshi Shinoda 2004-09-28
6784554 Semiconductor device and manufacturing method thereof Ryoichi Kajiwara, Masayoshi Shinoda, Akihiko Narisawa, Asao Nishimura, Toshiaki Morita +2 more 2004-08-31
6774466 Semiconductor device Ryoichi Kajiwara, Toshiaki Morita, Kazuya Takahashi, Munehisa Kishimoto, Shigeru Ishii +5 more 2004-08-10
6578778 Fuel injection valve Yasunori Takaku, Keiso Takeda, Yukio Koseki, Tomojiro Sugimoto 2003-06-17
6569764 Method of manufacturing a semiconductor package by attaching a lead frame to a semiconductor chip via projecting electrodes and an insulating sheet of resin material Toshinori Hirashima, Yasushi Takahashi, Ryoichi Kajiwara, Munehisa Kishimoto 2003-05-27