ST

Seiji Tsuruta

UJ Unisia Jecs: 12 patents #21 of 395Top 6%
HS Hitachi Automotive Systems: 7 patents #226 of 1,636Top 15%
AU Atsugi Unisia: 3 patents #20 of 117Top 20%
HI Hitachi: 3 patents #10,712 of 28,497Top 40%
HA Hitachi Unisia Automotive: 1 patents #26 of 62Top 45%
AC Atsugi Motor Parts Company: 1 patents #38 of 93Top 45%
HM Hyundai Motor: 1 patents #6,384 of 11,886Top 55%
Nissan Motor Co.: 1 patents #4,519 of 8,689Top 55%
Overall (All Time): #146,349 of 4,157,543Top 4%
27
Patents All Time

Issued Patents All Time

Showing 1–25 of 27 patents

Patent #TitleCo-InventorsDate
10107155 Valve timing control apparatus of internal combustion engine Hong Wook Lee, Bonghoon Han, Jaechun Kim, Hyung Ick Kim, Yoshihiko Yamada +1 more 2018-10-23
9874116 Valve-timing control device for internal combustion engine Atsushi Yamanaka, Isao Doi 2018-01-23
9470118 Valve timing control apparatus for internal combustion engine and controller for valve timing control apparatus Naoki Kokubo, Shinichi Kawada 2016-10-18
9068626 Balancer device of internal combustion engine Masaharu Saito, Tamotsu Todo, Masaharu Kitamura, Harunobu Okabe, Takashi Hirano 2015-06-30
8899197 Valve-timing control apparatus for internal combustion engine Naoki Kokubo, Shinichi Kawada 2014-12-02
8677965 Valve timing control device of internal combustion engine Hiroyuki Kato, Kotaro Watanabe, Yoshinori Ichinosawa 2014-03-25
8544429 Valve control apparatus for internal combustion engine Makoto Nakamura 2013-10-01
8061315 Variable valve actuating apparatus for internal combustion engine and control shaft for variable valve actuating apparatus Makoto Nakamura, Seinosuke Hara, Mikihiro Kajiura 2011-11-22
8006658 Variable valve actuation apparatus of internal combustion engine Makoto Nakamura, Noriomi Hosaka, Mikihiro Kajiura, Yoshihiko Yamada, Seinosuke Hara 2011-08-30
7565887 Valve actuation device of internal combustion engine Mikihiro Kajiura 2009-07-28
6691654 Valve-lash adjuster equipped valve operating device for internal combustion engine Hirokazu Uehara 2004-02-17
6467443 Valve operating device of internal combustion engine Nobutaka Hayashi 2002-10-22
6397806 Engine valve assembly for internal combustion engine Hiroaki Imai, Hirokazau Uehara 2002-06-04
6263843 Valve timing control device of internal combustion engine Tamotsu Todo, Hirokazu Uehara 2001-07-24
6032624 Engine valve actuating devices Takanori Sawada 2000-03-07
6032643 Decompression engine brake device of automotive internal combustion engine Noriomi Hosaka, Tamotsu Todo 2000-03-07
5918367 Method of producing valve lifter Tamotsu Todo, Yasuo Fukuda, Noriomi Hosaka, Kenji Suzuki, Shin Koizumi 1999-07-06
5816216 Decompression brake device of automotive internal combustion engine Noboru Egashira, Hirokazu Uehara, Akira Torii 1998-10-06
5794576 Engine cylinder valve controlling apparatus Seinosuke Hara, Nobutaka Hayashi, Takanori Sawada 1998-08-18
5749341 Valve lifter for internal combustion engines Noriomi Hosaka, Tadashi Kikyohara, Sadayuki Abo, Masaki Toriumi, Kenji Ariga 1998-05-12
5655499 Decompression braking apparatus for diesel engine Hirokazu Uehara, Akio Akasaka 1997-08-12
5647319 Decompression braking apparatus for diesel engine Hirokazu Uehara, Noboru Egashira 1997-07-15
5592909 Camshaft phase changing device 1997-01-14
5205248 Intake- and/or exhaust-valve timing control system for internal combustion engines Seinosuke Hara 1993-04-27
5203290 Intake and/or exhaust-valve timing control sytem for internal combustion engine Tamotsu Todo, Hideaki Onishi 1993-04-20