TK

Takao Koshikawa

Fujitsu Limited: 25 patents #1,029 of 24,456Top 5%
KS Kawasaki Steel: 7 patents #133 of 1,922Top 7%
SC Sakai Chemical Industry Co.: 2 patents #66 of 227Top 30%
HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Overall (All Time): #114,332 of 4,157,543Top 3%
32
Patents All Time

Issued Patents All Time

Showing 1–25 of 32 patents

Patent #TitleCo-InventorsDate
7142393 Magnetic head and magnetic disk apparatus Koki Kanda, Minoru Takahashi, Katsumi Kiuchi, Katsuhide Sone, Muneo Kamiguchi 2006-11-28
6594119 Thin film magnetic head slider and electrostatic actuator for driving a head element thereof Hiroshi Maeda, Takahiro Imamura 2003-07-15
6324032 Magnetic recording medium having linear or curved tracking servo patterns formed obliquely relative to direction of tracks, and magnetic recording apparatus using the same Yoshinori Ohtsuka, Yoshifumi Mizoshita, Hiroshi Maeda 2001-11-27
6295175 Apparatus for recognizing spin valve head failure due to pin layer magnetic field offset Isamu Tomita, Toshinori Hoshino, Tadashi Nakamura, Hitoshi Kanai, Hiroaki Ueno 2001-09-25
6282061 Magnetic head with improved floating surface Koki Kanda, Minoru Takahashi, Katsumi Kiuchi, Katsuhide Sone, Muneo Kamiguchi 2001-08-28
6199267 Method for the production of a magnetic head Atsuhiko Nagai 2001-03-13
6181531 Thin film magnetic head slider and electrostatic actuator for driving a head element thereof Hiroshi Maeda, Takahiro Imamura 2001-01-30
6134079 Magnetic head including a pole piece with soft magnetic particles dispersed therein and manufacturing method therefor 2000-10-17
6083410 Thin film magnetic head and process for producing same Yukinori Ikegawa, Yoshinori Ohtsuka 2000-07-04
6055139 Magnetic recording medium and method of forming the same and magnetic disk drive Yoshinori Ohtsuka, Yoshifumi Mizoshita, Hiroshi Maeda 2000-04-25
5995339 Magnetoresistive head with a front flux guide and an embedded MR element Yoshinori Ohtsuka, Yuji Uehara, Junzo Toda, Yoshifumi Mizoshita 1999-11-30
5966277 Magnetic head and method for production thereof Atsuhiko Nagai 1999-10-12
5920978 Method of making a thin film magnetic slider Hiroshi Maeda, Takahiro Imamura 1999-07-13
5898542 Magneto-resistive effect type head with step or protrusion for reducing thermal asperity Yoshifumi Mizoshita 1999-04-27
5896243 Magneto-resistive effect type head with step or protrusion for reducing thermal asperity Yoshifumi Mizoshita 1999-04-20
5859753 Spin valve magnetoresistive head with spun valves connected in series Yoshinori Ohtsuka, Yoshifumi Mizoshita 1999-01-12
5793560 Storage device having vibratory head Yoshifumi Mizoshita, Hiroshi Maeda, Takayuki Yamamoto 1998-08-11
5777827 Horizontal type magneto-resistive head using flux guide Yoshifumi Mizoshita, Hitoshi Kanai, Junichi Kane, Yoshinori Otsuka, Yukinori Ikegawa 1998-07-07
5771141 Magnetoresistive head and magnetic recording/reproducing apparatus Yoshinori Ohtsuka, Yoshifumi Mizoshita, Yuji Uehara, Eiichi Kanda, Ken-ichi AOSHIMA +2 more 1998-06-23
5717630 Magnetic memory device Yukinori Ikegawa, Hiroshi Maeda, Yoshinori Ohtsuka, Takahiro Imamura, Yoshifumi Mizoshita 1998-02-10
5589262 Perpendicular magnetic recording medium having a soft magnetic underlayer with a stripe magnetic domain structure Katsumi Kiuchi, Hiroaki Wakamatsu, Fumitake Suzuki 1996-12-31
5583726 Magneto-resistive head using flux guide Yoshifumi Mizoshita, Hitoshi Kanai, Junichi Kane, Yoshinori Otsuka, Yukinori Ikegawa 1996-12-10
5493464 Thin-film magnetic head with separate recording and reproducing gaps 1996-02-20
5400192 Storage device having vibratory head Yoshifumi Mizoshita, Hiroshi Maeda, Takayuki Yamamoto 1995-03-21
5127462 Side wall construction for continuous belt caster Saburo Moriwaki, Hitoshi Osugi, Masayuki Onishi, Nagayasu Bessho, Keiichiro Isomura +2 more 1992-07-07