TF

Takahiko Fujiwara

TO Toyota: 47 patents #211 of 26,838Top 1%
HI Hitachi: 3 patents #10,712 of 28,497Top 40%
Overall (All Time): #54,406 of 4,157,543Top 2%
50
Patents All Time

Issued Patents All Time

Showing 26–50 of 50 patents

Patent #TitleCo-InventorsDate
9062622 Air-fuel ratio control apparatus Ryota Onoe, Junichi Suzuki, Makoto Tomimatsu 2015-06-23
8949000 Control device and control method for internal combustion engine Koichi Kimura, Kazuhisa Matsuda 2015-02-03
8899019 Air-fuel ratio control apparatus Ryota Onoe, Junichi Suzuki, Makoto Tomimatsu, Koichi Kimura, Shuntaro Okazaki 2014-12-02
8772208 Additive agent, oil filter and lubricating device for machine Ippei Fukutomi, Norio Inami, Kenichi Harada, Motoichi Murakami, Koji Morita 2014-07-08
8712667 Air-fuel ratio control apparatus for an internal combustion engine Tomohiro Nakano 2014-04-29
8613219 Catalyst abnormality diagnosis apparatus Koichi Kitaura, Yuuji Miyoshi, Ryota Onoe 2013-12-24
8464515 Ammonia burning internal combustion engine Koji Aso, Hiroshi Tanaka 2013-06-18
8464522 Control apparatus for internal combustion engine Noriyasu Kobashi, Yusuke Nakayama, Mamoru Yoshioka, Tsuyoshi Ito 2013-06-18
8423265 Control system of internal combustion engine Koji Aso, Hiroshi Tanaka 2013-04-16
8406980 Air-fuel ratio control device and air-fuel ratio control method for internal combustion engine Norihisa Nakagawa, Taiga Hagimoto, Junichi Kako, Naoto Kato, Shuntaro Okazaki 2013-03-26
8371277 Control system for internal combustion engine Nao Murase, Shogo Suda, Nobuhiko Koga, Rentaro Kuroki 2013-02-12
8266898 Control apparatus for internal combustion engine Noriyasu Kobashi 2012-09-18
8240131 Exhaust gas purifying apparatus for internal combustion engine Masaaki Kawai 2012-08-14
8230846 Air-fuel ratio control device for internal combustion engine Hiroaki Mizoguchi, Norihisa Nakagawa, Taiga Hagimoto, Naoto Kato, Shuntaro Okazaki 2012-07-31
8122869 Air-fuel ratio control system of a multi-cylinder internal combustion engine Norihisa Nakagawa, Taiga Hagimoto, Junichi Kako, Naoto Kato, Shuntaro Okazaki +1 more 2012-02-28
8074441 Apparatus and method for determining catalyst degradation 2011-12-13
7861514 Method and device for detecting deterioration of catalyst Yasuyuki Takama 2011-01-04
7795174 Catalyst for purifying exhaust gases Hiromasa Suzuki, Mamoru Ishikiriyama 2010-09-14
7729847 Air-fuel ratio control device of internal combustion engine Hiroaki Mizoguchi, Kunihiko Nakata, Kenji Sakurai, Hiroki Ichinose, Masaaki Kawai +1 more 2010-06-01
7474956 Air-fuel ratio control system of internal combustion engine Norihisa Nakagawa, Taiga Hagimoto, Junichi Kako, Naoto Kato, Shuntaro Okazaki 2009-01-06
7469530 Fuel cut control apparatus of internal combustion engine Kunihiko Nakata, Hiroki Ichinose, Atsunori Hirata 2008-12-30
7159388 Air-fuel ratio control device for internal-combustion engine Norihisa Nakagawa 2007-01-09
5589883 Cathode ray tube display Masanori Ogino, Takeo Yamada, Miyuki Ikeda, Tsuneo Fujikura, Etsuhiro Nakagiri 1996-12-31
5337090 Video output circuit with wide bandwidth and low power consumption for high resolution display Masanori Ogino, Takeo Yamada, Miyuki Ikeda, Tsuneo Fujikura 1994-08-09
5189347 Video circuit for driving a cathode ray tube Masanori Ogino, Takeo Yamada, Miyuki Ikeda, Tsueno Fujikura 1993-02-23