YK

Yoshifumi Katayama

HI Hitachi: 14 patents #2,889 of 28,497Top 15%
HC Hitachi Tokyo Electronics Co.: 2 patents #9 of 101Top 9%
RT Renesas Technology: 1 patents #1,991 of 3,337Top 60%
SH Shinkawa: 1 patents #131 of 229Top 60%
SC Shinko Electric Industries Co.: 1 patents #437 of 723Top 65%
Overall (All Time): #274,901 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
9887117 Electrostatic chuck and semiconductor-liquid crystal manufacturing apparatus Jiro Kawai 2018-02-06
6898848 Method of bonding inner leads to chip pads Tatsuyuki Ohkubo, Keisuke Nadamoto 2005-05-31
6722840 Wafer ring supplying and returning apparatus Kazuhiro Fujisawa, Yasushi Sato 2004-04-20
6516515 Semiconductor integrated circuit Tatsuyuki Ohkubo, Keisuke Nadamoto 2003-02-11
6279226 Lead bonding machine for bonding leads of a chip disposed over a carrier tape to an electrode pad formed on the chip Tatsuyuki Ohkubo, Keisuke Nadamoto 2001-08-28
4835583 Semiconductor device having strained superlattice buffer layers with In-doped GaAs substrate Makoto Morioka, Tomoyoshi Mishima, Kenji Hiruma, Yasuhiro Shiraki 1989-05-30
4796068 Semiconductor device having ultrahigh-mobility Yasuhiro Shiraki, Yoshimasa Murayama 1989-01-03
4759030 Semiconductor laser Yoshimasa Murayama, Yasutsugu Takeda, Michiharu Nakamura, Yasuhiro Shiraki, Naoki Chinone 1988-07-19
4673959 Heterojunction FET with doubly-doped channel Yasuhiro Shiraki, Yoshimasa Murayama, Makoto Morioka, Yasushi Sawada, Tomoyoshi Mishima +2 more 1987-06-16
4672406 Semiconductor member and semiconductor device employing the same Yasushi Sawada, Kiichi Ueyanagi, Yasuhiro Shiraki, Makoto Morioka, Takao Kuroda +1 more 1987-06-09
4613382 Method of forming passivated polycrystalline semiconductors Toshikazu Shimada, Eiichi Maruyama 1986-09-23
4605945 Semiconductor device Yasuhiro Shiraki, Ken Yamaguchi, Yoshimasa Murayama, Yasushi Sawada, Toshiyuki Usagawa +1 more 1986-08-12
4559547 Semiconductor device Yasuhiro Shiraki, Yoshimasa Murayama, Eiichi Maruyama 1985-12-17
4433202 Thin film solar cell Eiichi Maruyama, Toshikazu Shimada, Yasuhiro Shiraki, Hirokazu Matsubara, Akitoshi Ishizaka +2 more 1984-02-21
4351856 Semiconductor device and method of manufacturing the same Makoto Matsui, Yasuhiro Shiraki, Toshihisa Tsukada, Eiichi Maruyama 1982-09-28
4337443 Semiconductor laser device with facet passivation film Jun-ichi Umeda, Toshikazu Shimada, Michiharu Nakamura, Takashi Kajimura, Shigeo Yamashita 1982-06-29
4289822 Light-sensitive film Toshikazu Shimada, Kiichi Komatsubara 1981-09-15