TK

Toshiko Koizumi

HI Hitachi: 2 patents #13,388 of 28,497Top 50%
HC Hitachi Device Engineering Co.: 1 patents #292 of 514Top 60%
📍 Kokubunji, JP: #421 of 714 inventorsTop 60%
Overall (All Time): #2,314,759 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4996571 Non-volatile semiconductor memory device erasing operation Hitoshi Kume, Yoshiaki Kamigaki, Tetsuo Adachi, Toshihisa Tsukada, Kazuhiro Komori +2 more 1991-02-26
4972371 Semiconductor memory device Kazuhiro Komori, Takaaki Hagiwara, Satoshi Meguro, Toshiaki Nishimoto, Takeshi Wada +6 more 1990-11-20