NK

Nobuhiko Koyama

DE Denso: 15 patents #687 of 11,792Top 6%
NS Nippon Soken: 12 patents #102 of 1,540Top 7%
NC Nippondenso Co.: 8 patents #238 of 3,479Top 7%
KC Kuraray Chemical Co.: 1 patents #34 of 81Top 45%
TO Toyota: 1 patents #15,335 of 26,838Top 60%
Overall (All Time): #186,258 of 4,157,543Top 5%
23
Patents All Time

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #TitleCo-InventorsDate
7409947 Fuel vapor treatment apparatus 2008-08-12
7389769 Fuel nature measuring device of internal combustion engine and internal combustion engine having the same Noriyasu Amano, Takanobu Kawano 2008-06-24
7373929 Fuel nature measuring device of internal combustion engine and internal combustion engine having the same Noriyasu Amano, Takanobu Kawano 2008-05-20
7341048 Fuel vapor treatment apparatus Kenji Nagasaki, Shinsuke Kiyomiya 2008-03-11
7272485 Fuel nature measuring device of internal combustion engine and internal combustion engine having the same Noriyasu Amano, Takanobu Kawano 2007-09-18
7219660 Fuel vapor treatment system for internal combustion engine Noriyasu Amano, Takanobu Kawano, Koichi Inagaki, Masao Kano, Shinsuke Takakura +1 more 2007-05-22
7008471 Filter and canister having the same Hideaki Itakura 2006-03-07
6971375 Fuel vapor treatment system for internal combustion engine Noriyasu Amano, Takanobu Kawano, Koichi Inagaki, Masao Kano, Shinsuke Takakura +1 more 2005-12-06
6701902 Activated carbon canister Masao Kano, Noriyasu Amano, Hideaki Itakura, Susumu Abe 2004-03-09
6689196 Fuel vapor control apparatus Noriyasu Amano, Hideaki Itakura, Masaki Takeyama, Naoya Kato 2004-02-10
6666072 Evaporative emission control system and method for detecting leaks therein Noboru Hirano 2003-12-23
6634343 Evaported fuel processor and fault diagnosing apparatus therefor Masao Kano, Hideki Kato, Noriyasu Amano, Hideaki Itakura, Naoya Kato 2003-10-21
6604407 Leak check apparatus for fuel vapor purge system Masao Kano 2003-08-12
6394074 Vapor fuel processing system having canister for absorbing vapor fuel contained in fuel tank Kingo Okada, Toshihiko Muramatsu, Susumu Kojima 2002-05-28
5915364 Canister for use in evaporative emission control system for automotive vehicle Naoya Katou, Hideaki Itakura, Tohru Yoshinaga, Tokio Kohama, Katsuo Azegami +1 more 1999-06-29
5743943 Evaporated fuel adsorbing canister preventing diffusion of fuel therethrough Kazuto Maeda, Naoya Kato 1998-04-28
5601065 Fuel evaporation gas transpiration prevention system Hiroshi Tamura, Junya Morikawa, Kazuto Maeda 1997-02-11
5564398 Simplified canister for prevention of atmospheric diffusion of fuel vapor from a vehicle Kazuto Maeda, Hiroshi Tamura, Junya Morikawa 1996-10-15
5535719 Purge-compensated air-fuel ratio control apparatus Junya Morikawa, Kazuto Maeda, Hiroshi Tamura 1996-07-16
5501198 Fuel vapor control apparatus for an internal combustion engine 1996-03-26
5398660 Fuel vapor purging system Kazuto Maeda, Yuzi Ishiguro, Seiko Abe, Toshihiko Igashira, Yasuyuki Sakakibara +1 more 1995-03-21
4951643 Fuel vapor treatment apparatus Hidenori Sato, Takashi Umeno, Michiyasu Nosaka 1990-08-28
4919103 Device for controlling evaporative emission from a fuel tank Yuji Ishiguro, Hiroyuki Hosokawa, Eiji Hiramatsu, Mitsunori Takao, Tomoaki Abe +3 more 1990-04-24