TK

Toshihiko Koizumi

Ricoh Company: 4 patents #4,167 of 9,818Top 45%
Nichia: 3 patents #567 of 1,531Top 40%
YC Yamanashi Electronics Co.: 2 patents #6 of 75Top 8%
📍 Kofu, JP: #54 of 209 inventorsTop 30%
Overall (All Time): #742,836 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
8349529 Electrophotographic photoconductor, and electrophotographic method, electrophotographic apparatus and process cartridge containing the electrophotographic photoconductor Keisuke Shimoyama, Takaaki Ikegami, Eiji Kurimoto, Kohsuke Yamamoto, Tetsuya Sakuma +2 more 2013-01-08
8263297 Electrophotographic photoconductor and electrophotographic apparatus Takaaki Ikegami, Takeshi Takada, Hideki Nakamura, Hajime Suzuki, Keisuke Shimoyama +2 more 2012-09-11
8257891 Electrophotographic photoconductor, process cartridge and image forming apparatus Naoki Nakatake, Atsushi Takehara, Tsuyoshi Ueda, Tadayoshi Uchida, Hajime Suzuki 2012-09-04
7704655 Electrophotographic photoreceptor and electrophotographic apparatus Hajime Suzuki, Tsuyoshi Ueda, Hideki Nakamura, Tetsuya Sakuma 2010-04-27
D609553 Metal fixture 2010-02-09
D609554 Metal fixing clip 2010-02-09
D608181 Metal fitting plate 2010-01-19