EM

Eiichi Maruyama

HI Hitachi: 33 patents #772 of 28,497Top 3%
NP Nippon Telegraph And Telephone Public: 3 patents #61 of 842Top 8%
HD Hitachi Denshi: 2 patents #77 of 275Top 30%
NK Nippon Hoso Kyokai: 1 patents #306 of 703Top 45%
Overall (All Time): #109,138 of 4,157,543Top 3%
33
Patents All Time

Issued Patents All Time

Showing 25 most recent of 33 patents

Patent #TitleCo-InventorsDate
4904989 Display device Makoto Matsui, Jun-ichi Ohwada, Yasuhiro Shiraki 1990-02-27
RE33094 Electrophotographic member with alpha-si layers Sachio Ishioka, Yoshinori Imamura, Hirokazu Matsubara, Yasuharu Shimomoto, Shinkichi Horigome +1 more 1989-10-17
4673959 Heterojunction FET with doubly-doped channel Yasuhiro Shiraki, Yoshifumi Katayama, Yoshimasa Murayama, Makoto Morioka, Yasushi Sawada +2 more 1987-06-16
4672015 Electrophotographic member having multilayered amorphous silicon photosensitive member Makoto Fujikura, Hirokazu Matsubara, Toshikazu Shimada 1987-06-09
4613382 Method of forming passivated polycrystalline semiconductors Yoshifumi Katayama, Toshikazu Shimada 1986-09-23
4605945 Semiconductor device Yoshifumi Katayama, Yasuhiro Shiraki, Ken Yamaguchi, Yoshimasa Murayama, Yasushi Sawada +1 more 1986-08-12
4583122 Imaging display device Junichi Ohwada, Hideaki Kawakami, Makoto Matsui 1986-04-15
4559547 Semiconductor device Yasuhiro Shiraki, Yoshimasa Murayama, Yoshifumi Katayama 1985-12-17
4556816 Photoelectric device Yoshinori Imamura, Saburo Ataka, Yukio Takasaki, Yasuo Tanaka, Tadaaki Hirai 1985-12-03
4556817 Photoelectric conversion apparatus Chushirou Kusano, Sachio Ishioka, Yoshinori Imamura, Yukio Takasaki, Hirofumi Ogawa +2 more 1985-12-03
4433202 Thin film solar cell Toshikazu Shimada, Yasuhiro Shiraki, Yoshifumi Katayama, Hirokazu Matsubara, Akitoshi Ishizaka +2 more 1984-02-21
4419604 Light sensitive screen Sachio Ishioka, Yoshinori Imamura, Yasuharu Shimomoto, Saburo Ataka, Yasuo Tanaka 1983-12-06
4405879 Photoelectric conversion device and method of producing the same Saburo Ataka, Yoshinori Imamura, Yasuo Tanaka, Hirokazu Matsubara 1983-09-20
4394749 Photoelectric device and method of producing the same Toshihisa Tsukada, Yukio Takasaki, Tadaaki Hirai, Toru Baji, Hideaki Yamamoto +2 more 1983-07-19
4380557 Method of production of image pickup device Sachio Ishioka, Yasuharu Shimomoto, Yoshinori Imamura, Saburo Ataka, Yasuo Tanaka +2 more 1983-04-19
4378417 Electrophotographic member with .alpha.-Si layers Sachio Ishioka, Yoshinori Imamura, Hirokazu Matsubara, Yasuharu Shimomoto, Shinkichi Horigome +1 more 1983-03-29
4377628 Electrophotographic member with .alpha.-Si and H Sachio Ishioka, Yoshinori Imamura, Hirokazu Matsubara, Shinkichi Horigome 1983-03-22
4365013 Electrophotographic member Sachio Ishioka, Yoshinori Imamura, Hirokazu Matsubara, Shinkichi Horigome 1982-12-21
4360821 Solid-state imaging device Toshihisa Tsukada, Toru Baji, Saburo Ataka, Yoshinori Imamura, Akira Sasano +3 more 1982-11-23
4351856 Semiconductor device and method of manufacturing the same Makoto Matsui, Yasuhiro Shiraki, Yoshifumi Katayama, Toshihisa Tsukada 1982-09-28
4331506 Method of manufacturing target of image pickup tube Akira Sasano, Toshio Nakano, Ken Tsutsui, Chushiro Kusano, Tadaaki Hirai 1982-05-25
4323912 Solid-state imaging device Norio Koike, Toshihisa Tsukada, Haruhisa Ando, Hideaki Yamamoto, Tadaaki Hirai +4 more 1982-04-06
4314014 Electrophotographic plate and process for preparation thereof Hideaki Yamamoto, Akio Taniguchi, Shinkichi Horigome, Susumu Saito, Yoshiaki Mori 1982-02-02
4307372 Photosensor Makoto Matsui, Hideaki Yamamoto 1981-12-22
4307319 Semiconductor layer of oxygen depletion type cerium oxide or lead oxide Motoyasu Terao, Tadaaki Hirai, Hideaki Yamamoto, Tsutomu Fujita, Naohiro Goto +1 more 1981-12-22