KA

Kazutoshi Ashikawa

HI Hitachi: 8 patents #5,191 of 28,497Top 20%
Overall (All Time): #662,668 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
6700721 Magnetic recording and reproducing apparatus and semiconductor integrated circuit for use in the same comprising a read/write signal processor having an interleave write data generator Eisaku Saiki, Shintaro Suzumura, Terumi Takashi, Tsuguyoshi Hirooka, Shoichi Miyazawa +1 more 2004-03-02
6452736 Magnetic recording and reproducing apparatus and a read/write amplifier having a signal transmission system with high speed of data write signal Eisaku Saiki, Shintaro Suzumura, Terumi Takashi, Tsuguyoshi Hirooka, Shoichi Miyazawa +1 more 2002-09-17
5867333 Data recording and reproducing apparatus and phase locked loop circuit for use therein including D/A converters acting as charge pumps and a reference voltage source Eisaku Saiki, Shintaro Suzumura, Tsuguyoshi Hirooka, Seiichi Mita 1999-02-02
5774470 Digital signal processor, error detection method, and recording medium reproducer Takushi Nishiya, Shoichi Miyazawa, Ryushi Shimokawa, Seiichi Mita 1998-06-30
5553104 Information recording/reproducing apparatus having a clock timing extraction circuit for extracting a clock signal from an input data signal Terumi Takashi, Akihiko Hirano, Kazunori Iwabuchi, Hideyuki Yamakawa, Yoshiteru Ishida +1 more 1996-09-03
4831424 Insulated gate semiconductor device with back-to-back diodes Isao Yoshida, Takeaki Okabe, Mitsuo Ito, Tetsuo Iijima 1989-05-16
4688323 Method for fabricating vertical MOSFETs Isao Yoshida, Takeaki Okabe, Mitsuo Ito, Tetsuo Iijima 1987-08-25
4492974 DMOS With gate protection diode formed over base region Isao Yoshida, Takeaki Okabe, Mineo Katsueda, Minoru Nagata, Toshiaki Masuhara +5 more 1985-01-08