YK

Yoshiko Kokawa

Mitsubishi Electric: 5 patents #5,859 of 25,717Top 25%
📍 Kasai, JP: #1,570 of 5,842 inventorsTop 30%
Overall (All Time): #1,051,998 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5721145 Method of making a semiconductor substrate having gettering effect Kenji Kusakabe, Masahiro Sekine 1998-02-24
5419786 Semiconductor substrate for bipolar element Kenji Kusakabe 1995-05-30
5381032 Semiconductor device having a gate electrode of polycrystal layer and a method of manufacturing thereof Tohru Koyama, Kenji Kusakabe, Katsuhiko Tamura, Yasuna Nakamura 1995-01-10
5221630 Method of manufacturing semiconductor device having a two layered structure gate electrode Tohru Koyama, Katsuhiko Tamura, Yasuna Nakamura, Kenji Kusakabe 1993-06-22
5177569 Semiconductor device having a two layered structure gate electrode Tohru Koyama, Katsuhiko Tamura, Yasuna Nakamura, Kenji Kusakabe 1993-01-05