JM

Juichi Morikawa

HI Hitachi: 14 patents #2,889 of 28,497Top 15%
Overall (All Time): #357,534 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5825853 Communication device Noboru Kojima, Toshiro Kamiuchi, Yoshito Nejime 1998-10-20
5717818 Audio signal storing apparatus having a function for converting speech speed Yoshito Nejime, Yukio Kumagai, Tadashi Takamiya, Yasunori Kawauchi, Nobuo Hataoka 1998-02-10
5363263 Coil assembly for rotary magnetic head apparatus Toshio Ohji, Hideo Zama 1994-11-08
5193045 Helical scan type magnetic recording and/or reproducing apparatus having combination type video head and flying erase head for low vibration Masanori Kochi, Hideo Zama, Makoto Ibe 1993-03-09
5126906 Rotary magnetic head device with rotary transformer having high coupling coefficient Toshio Ohji, Hideo Zama 1992-06-30
5057944 Multiplex rotating magnetic head system for multiply recording and erasing audio and video signals Shinji Ozaki, Hideo Zama, Mashanori Kochi, Makoto Ibe 1991-10-15
4961122 Hydrodynamic grooved bearing device Kazuo Sakai, Takao Terayama 1990-10-02
4959743 Jitter reducing tapered rotary drum for magnetic head apparatus Mashanori Kochi, Makoto Ibe, Shinji Ozaki, Hitoshi Takizawa 1990-09-25
4833562 Rotary magnetic head cylinder device for suppressing vibrations ofa magnetic tape Masanori Kochi, Makoto Ibe, Toshio Osada, Hitoshi Takizawa, Hideyuki Kawase +4 more 1989-05-23
4803338 Magnetic head having improved track width narrowing grooves Noriyuki Kumasaka, Shigekazu Otomo, Takeo Yamashita, Hideo Zama 1989-02-07
4794483 Magnetic head having layers of amorphous magnetic alloy bonded together with a glass containing vandium oxide phosphorus oxide and antimony oxide Takashi Naitoh, Takashi Namekawa, Seiichi Yamada, Satoru Ogihara 1988-12-27
4745507 Composite type magnetic head with non-magnetic member in coil mounting portion Shigekazu Otomo, Noriyuki Kumasaka, Takeo Yamashita, Hideo Fujiwara, Osamu Inagoya +2 more 1988-05-17
4731683 Magnetic recording and reproducing system with composite magnetic head Shigekazu Otomo, Noriyuki Kumasaka, Takeo Yamashita, Takayuki Kobayashi, Mitsuhiro Kudo 1988-03-15
4223292 Hall element Nobuo Kotera 1980-09-16