RN

Ryoichi Nakatani

HI Hitachi: 26 patents #1,179 of 28,497Top 5%
OU Osaka University: 4 patents #157 of 1,984Top 8%
HG HGST: 3 patents #100 of 483Top 25%
AU Akita University: 1 patents #21 of 60Top 35%
📍 Suita, JP: #23 of 1,253 inventorsTop 2%
Overall (All Time): #108,446 of 4,157,543Top 3%
33
Patents All Time

Issued Patents All Time

Showing 1–25 of 33 patents

Patent #TitleCo-InventorsDate
9482692 Magnetic field value measuring device and method for measuring magnetic field value Hitoshi Saito, Satoru Yoshimura, Yukinori Kinoshita, Hikaru Nomura 2016-11-01
7292417 Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect Masahiro Kitada, Hisashi Takano, Hideo Tanabe, Noboru Shimizu 2007-11-06
7159303 Method for manufacturing magnetic head device Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano, Eijin Moriwaki +14 more 2007-01-09
7099185 Magnetic memory array, method for recording in a magnetic memory array and method for reading out from a magnetic memory array Masahiko Yamamoto, Yasushi Endo 2006-08-29
7054120 Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano, Eijin Moriwaki +14 more 2006-05-30
6950332 Magnetic memory element with vortex magnetization to control magnetization rotation and prevent leakage of magnetic flux Masahiko Yamamoto, Yasushi Endo 2005-09-27
6940750 Magnetic memory, magnetic memory array, method for fabricating a magnetic memory, method for recording in a magnetic memory and method for reading out from a magnetic memory Masahiko Yamamoto, Yasushi Endo 2005-09-06
6771474 Magnetic head with tunneling multi-layer magnetoresistive element biased by current controller 2004-08-03
6687099 Magnetic head with conductors formed on endlayers of a multilayer film having magnetic layer coercive force difference Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano, Eijin Moriwaki +14 more 2004-02-03
6556393 Magnetic recording apparatus with tunneling magnetoresistive element biased by current controller 2003-04-29
6525532 Magnetic device Toshihiko Sato, Nobuyuki Inaba 2003-02-25
6483677 Magnetic disk apparatus including magnetic head having multilayered reproducing element using tunneling effect Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano, Eijin Moriwaki +14 more 2002-11-19
6483676 Magnetic head with tunneling magnetoresistive element biased by current controller 2002-11-19
6469873 Magnetic head and magnetic storage apparatus using the same Yoji Maruyama, Yoshio Suzuki, Hisashi Takano 2002-10-22
6418001 Tunneling magnetoresistive element using a bias magnetic field 2002-07-09
6392849 Magnetic head with dual spin valve element for differential operation Yoji Maruyama, Yoshio Suzuki, Hisashi Takano 2002-05-21
6339330 Magnetic head Toshihiko Sato, Nobuyuki Inaba 2002-01-15
6278593 Magnetoresistance effect elements and magnetic heads using the tunneling magnetoresistive effect Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano, Eijin Moriwaki +14 more 2001-08-21
6232777 Tunneling magnetoresistive element and magnetic sensor using the same Toshihiko Sato, Nobuyuki Inaba 2001-05-15
6201259 Tunneling magnetoresistance element, and magnetic sensor, magnetic head and magnetic memory using the element Toshihiko Sato 2001-03-13
6011674 Magnetoresistance effect multilayer film with ferromagnetic film sublayers of different ferromagnetic material compositions Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano, Eijin Moriwaki +14 more 2000-01-04
5998040 Multilayer which shows magnetoresistive effect and magnetoresistive element using the same Masahiro Kitada, Yuzuru Hosoe 1999-12-07
5879798 Heat resistant, high saturation magnetic flux density film Toshio Kobayashi, Hitoshi Nakamura, Noriyuki Kumasaka 1999-03-09
5726837 Multilayer magnetoresistance effect-type magnetic head Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano, Eijin Moriwaki +14 more 1998-03-10
5390061 Multilayer magnetoresistance effect-type magnetic head Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano, Eijin Moriwaki +14 more 1995-02-14