TF

Tadashi Fukuzawa

HI Hitachi: 20 patents #1,757 of 28,497Top 7%
IBM: 15 patents #7,450 of 70,183Top 15%
Overall (All Time): #94,912 of 4,157,543Top 3%
36
Patents All Time

Issued Patents All Time

Showing 26–36 of 36 patents

Patent #TitleCo-InventorsDate
4827483 Semiconductor laser device and method of fabricating the same Naoki Chinone, Shin'ichi Nakatsuka, Katsutoshi Saito, Takashi Kajimura, Yuuichi Ono 1989-05-02
4784451 Waveguide optical switches Hitoshi Nakamura, Koji Ishida, Hiroyoshi Matumura, Kenji Hiruma, Hiroaki Inoue 1988-11-15
4783425 Fabrication process of semiconductor lasers Yuichi Ono, Shinichi Nakatsuka, Takashi Kajimura 1988-11-08
4775980 Distributed-feedback semiconductor laser device Naoki Chinone, Shinji Tsuji, Yoshihisa Fujisaki, Yasutoshi Kashiwada, Motohisa Hirao +4 more 1988-10-04
4772925 High speed switching field effect transistor Ken Yamaguchi, Susumu Takahashi, Hisao Nakashima, Michiharu Nakamura 1988-09-20
4752934 Multi quantum well laser with parallel injection Naoki Chinone, Kazuhisa Uomi, Takashi Kajimura 1988-06-21
4748132 Micro fabrication process for semiconductor structure using coherent electron beams Akira Tonomura, Naoki Chinone 1988-05-31
4720836 Distributed feedback semiconductor laser Hiroyoshi Matsumura, Shinji Tsuji, Hitoshi Nakamura, Kenji Hiruma 1988-01-19
4430741 Semiconductor laser device Michiharu Nakamura, Susumu Takahashi 1984-02-07
4366567 Semiconductor laser device Michiharu Nakamura, Susumu Takahashi 1982-12-28
4361887 Semiconductor light emitting element Michiharu Nakamura, Motohisa Hirao, Shigeo Yamashita, Junichi Umeda 1982-11-30