JU

Jun-ichi Umeda

HI Hitachi: 11 patents #3,813 of 28,497Top 15%
HM Hitachi Maxell: 1 patents #659 of 1,211Top 55%
Overall (All Time): #474,925 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5031172 Unit and disc having a relatively rough surface and method of producing Kazuo Shigematsu 1991-07-09
4509173 Phase-locked semiconductor laser device Hisao Nakashima, Takashi Kajimura, Takao Kuroda 1985-04-02
4503540 Phase-locked semiconductor laser device Hisao Nakashima, Takao Kuroda, Takashi Kajimura, Hiroshi Matsuda 1985-03-05
4432091 Semiconductor laser device Takao Kuroda, Takashi Kajimura, Yasutoshi Kashiwada, Naoki Chinone, Kunio Aiki 1984-02-14
4426703 Semiconductor laser device Takao Kuroda, Takashi Kajimura, Katsutoshi Saito 1984-01-17
4404678 Semiconductor laser device Kunio Aiki, Michiharu Nakamura 1983-09-13
4369513 Semiconductor laser device Takashi Kajimura 1983-01-18
4337443 Semiconductor laser device with facet passivation film Toshikazu Shimada, Michiharu Nakamura, Yoshifumi Katayama, Takashi Kajimura, Shigeo Yamashita 1982-06-29
4326176 Semiconductor laser device Kunio Aiki, Michiharu Nakamura 1982-04-20
4288757 Semiconductor laser device Takashi Kajimura, Motohisa Hirao, Michiharu Nakamura, Takao Kuroda, Shigeo Yamashita 1981-09-08
4257011 Semiconductor laser device Michiharu Nakamura, Shigeo Yamashita, Takao Kuroda 1981-03-17