NK

Naoki Koyama

HI Hitachi: 28 patents #1,022 of 28,497Top 4%
HG HGST: 8 patents #567 of 1,677Top 35%
Canon: 2 patents #12,681 of 19,416Top 70%
Overall (All Time): #87,082 of 4,157,543Top 3%
38
Patents All Time

Issued Patents All Time

Showing 26–38 of 38 patents

Patent #TitleCo-InventorsDate
5461526 Magnetoresistive read head and magnetic storage system using the same Yoshihiro Hamakawa, Toshio Kobayashi, Masahiro Kitada 1995-10-24
5390061 Multilayer magnetoresistance effect-type magnetic head Ryoichi Nakatani, Masahiro Kitada, Isamu Yuito, Hisashi Takano, Eijin Moriwaki +14 more 1995-02-14
5337203 Magnetoresistive magnetic head Masahiro Kitada, Hideo Tanabe, Noboru Shimizu, Toshio Kobayashi 1994-08-09
5287237 Antiferromagnetic film superior in corrosion resistance, magnetoresistance-effect element and magnetoresistance-effect head including such thin film Masahiro Kitada, Noboru Shimizu, Hideo Tanabe, Ryoichi Nakatani, Isamu Yuito 1994-02-15
5212609 Magnetoresistive head Isamu Yuito, Makoto Morijiri, Tooru Takeura, Masahiro Kitada 1993-05-18
5168409 Integrated magnetic head having a magnetic layer functioning as both a magnetic shield and a magnetic pole Hisashi Takano, Eijin Moriwaki, Kazuo Shiiki 1992-12-01
5126907 Thin film magnetic head having at least one magnetic core member made at least partly of a material having a high saturation magnetic flux density Yoshihiro Hamakawa, Isamu Yuito, Hisashi Takano, Eijin Moriwaki, Shinobu Sasaki +1 more 1992-06-30
4922360 Magnetic head Hisashi Takano, Isamu Yuito, Kazuo Shiiki, Hideo Tanabe 1990-05-01
4772505 Magnetic bubble memory element Haruhiko Matsuyama, Fusaji Shoji, Hiroshi Umezaki, Masatoshi Takeshita, Ryo Suzuki 1988-09-20
4502916 Process for forming fine patterns Hiroshi Umezaki, Yoozi Maruyama, Yutaka Sugita 1985-03-05
4503517 Magnetic bubble memory device Hiroshi Umezaki, Yooji Maruyama, Yutaka Sugita 1985-03-05
4415262 Photomask Youji Maruyama, Hiroshi Umezaki, Norikazu Tsumita, Yutaka Sugita 1983-11-15
4354203 Lens control mechanism for television camera 1982-10-12