KI

Keiji Izumi

NC Nisshin Steel Co.: 8 patents #28 of 514Top 6%
NC Nippon Steel Nisshin Co.: 4 patents #3 of 93Top 4%
OC Olympus Optical Co.: 2 patents #1,178 of 2,334Top 55%
KT Kabushiki Kaisha Toshiba: 1 patents #13,537 of 21,451Top 65%
OL Olympus: 1 patents #2,078 of 3,097Top 70%
TO Toyota: 1 patents #15,335 of 26,838Top 60%
Overall (All Time): #292,506 of 4,157,543Top 8%
16
Patents All Time

Issued Patents All Time

Showing 1–16 of 16 patents

Patent #TitleCo-InventorsDate
11261603 Metallic roof material and roofing method using same Yuugo Oota, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita 2022-03-01
10724242 Metal roofing material and roofing method Kenichi Okubo, Motonori Kurotaki, Shuichi Sugita, Tomoyuki Nagatsu, Yuugo Oota +3 more 2020-07-28
10597874 Metal roofing material, and roofing structure and roofing method using same Yuugo Oota, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita, Kenichi Okubo +1 more 2020-03-24
10519661 Metal roofing material Yuugo Oota, Tomoyuki Nagatsu 2019-12-31
10400455 Metal roofing member, production method thereof, roofing structure and roofing method Yuugo Oota, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita, Kenichi Okubo 2019-09-03
10233645 Metal roofing member, and roofing structure and roofing method using same Yuugo Oota, Tomoyuki Nagatsu, Norimasa Miura, Katsunari Norita, Kenichi Okubo 2019-03-19
D841192 Roof board Yuugo Oota, Tomoyuki Nagatsu 2019-02-19
7879508 Separator for low-temperature type fuel cell and production method therefor Tsutomu Miyano, Takeshi Shimizu, Yoshikazu Morita, Shinichi Kamoshida, Toshiki Kingetsu 2011-02-01
7608119 Separator for low-temperature type fuel cell and production method therefor Tsutomu Miyano, Takeshi Shimizu, Yoshikazu Morita, Shinichi Kamoshida, Toshiki Kingetsu 2009-10-27
7070877 Stainless steel separator for low-temperature fuel cell Yoshikazu Morita, Shinichi Kamoshida, Takeshi Shimizu, Tsutomu Miyano, Yuichi Yagami +3 more 2006-07-04
7008052 Ink jet printer Takahisa Yamada, Takashi Matsuyama, Masanobu Shimizu, Kaoru Horie, Hiroshi Hashi +2 more 2006-03-07
6905041 Fuel tank made from aluminum coated steel sheet Hirofumi Taketsu, Masaya Yamamoto, Shuntaro Sudo 2005-06-14
6568784 Image recording apparatus Kenichi Okawa 2003-05-27
6561615 Image forming apparatus Kenichi Okawa 2003-05-13
6544666 Chemically processed steel sheet improved in corrosion resistance Kouichiro Ueda, Shigeyasu MORIKAWA, Tadashi Nakano, Yasumi Ariyoshi, Masanori Matsuno +1 more 2003-04-08
5267044 Automatic focusing system for use in cameras having zooming function Mitsuyuki Nozaki, Kazushige Ooi 1993-11-30