YM

Yooji Maruyama

HI Hitachi: 8 patents #5,191 of 28,497Top 20%
Overall (All Time): #664,069 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
6611487 Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same Takeshi Shimano, Kenchi Ito, Hiroyuki Awano 2003-08-26
6185177 Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same Takeshi Shimano, Kenchi Ito, Hiroyuki Awano 2001-02-06
5995474 Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same Takeshi Shimano, Kenchi Ito, Hiroyuki Awano 1999-11-30
5715226 Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same Takeshi Shimano, Kenchi Ito, Hiroyuki Awano 1998-02-03
5481386 Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same Takeshi Shimano, Kenchi Ito, Hiroyuki Awano 1996-01-02
5327371 Information recording and reproducing apparatus Yoshito Tsunoda, Ryo Imura, Kazuhisa Fujimoto 1994-07-05
5309388 Solid state magnetic memory device Ryo Imura, Kazuhisa Fujimoto 1994-05-03
4503517 Magnetic bubble memory device Hiroshi Umezaki, Naoki Koyama, Yutaka Sugita 1985-03-05