HI

Heigo Ishihara

HI Hitachi: 20 patents #1,757 of 28,497Top 7%
HM Hitachi Maxell: 1 patents #659 of 1,211Top 55%
Overall (All Time): #225,937 of 4,157,543Top 6%
20
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6869536 Lubricant, magnetic disk and magnetic disk apparatus Mina Ishida, Takayuki Nakakawaji, Yutaka Ito, Hiroyuki Matsumoto, Hiroshi Tani 2005-03-22
6555197 Lubricant, magnetic disk and magnetic disk apparatus Mina Ishida, Takayuki Nakakawaji, Yutaka Ito, Hiroyuki Matsumoto, Hiroshi Tani 2003-04-29
5958542 Thin film magnetic disc and method of manufacturing the disc Mitsuyoshi Ootake, Yuichi Kokaku, Yoshinori Honda, Akira Kato, Hiroaki Hagimae +1 more 1999-09-28
5820964 Magnetic disk, and magnetic disk apparatus Takayuki Nakakawaji, Shuji Imazeki, Yutaka Ito, Yuko Morita, Mitsuyoshi Shouji +5 more 1998-10-13
5543203 Magnetic recording medium having a protective layer which includes high and low surface energy regions and a lubricant Hiroshi Tani, Hiroyuki Matsumoto 1996-08-06
5498457 Magnetic recording medium having a lubricant layer comprising ionically interbonded fluoropolyethers with acidic and basic terminal groups Takanori Kudo 1996-03-12
5180608 Process for producing a rigid magnetic disk by longitudinally generating standing waves or interference waves in an undried applied magnetic paint Katsuyoshi Chiba, Masayuki Katsumoto, Yasutaro Uesaka, Hajime Fukke, Iwao Matsuyama +3 more 1993-01-19
5093211 Magnetic recording medium comprising a surface treatment layer provided on the magnetic layer of specified fluorocarboxylic acid amine salts Takanori Kudo 1992-03-03
5073460 Magnetic recording medium and process for producing the same Masaaki Futamoto, Yukio Honda, Selichi Asada, Takashi Nishimura, Kazuetsu Yoshida 1991-12-17
5034243 Method for magnetic orientation of magnetic recording medium using Meissner effect of high Tc superconductor Katsuyoshi Chiba, Masayuki Katsumoto, Yasutaro Uesaka, Naoki Kodama, Hajime Fukke +2 more 1991-07-23
5008128 Process for producing information recording medium Takanori Kudo 1991-04-16
5000982 Magnetic recording medium and method for producing the same Akira Osaki, Waichi Nagashiro, Fuzio Maeda 1991-03-19
4985295 Magnetic recording medium and method for producing the same Akira Osaki, Waichi Nagashiro, Fuzio Maeda 1991-01-15
4966797 Process for producing magnetic recording medium, magnetic paint, and magnetic disk Akira Osaki, Takanori Kudo 1990-10-30
4794035 Magnetic recording medium Takanori Kudo, Tomoyuki Ohno, Motoo Akagi 1988-12-27
4722859 Magnetic recording medium Takanori Kudo, Motoo Akagi 1988-02-02
4692378 Magnetic recording media Tomoyuki Ohno 1987-09-08
4238341 Composition of magnetic recording media Yoshiki Kato, Hajime Fukke, Katsuyoshi Chiba, Waichi Nagashiro, Teruo Tsunoda +1 more 1980-12-09
4229312 Method of manufacturing a paint composite for magnetic films Waichi Nagashiro, Hajime Fukke, Yoshiki Kato, Teruo Tsunoda, Teruaki Kobayashi +4 more 1980-10-21
4189508 Process for the preparation of magnetic recording medium Katsuyoshi Chiba, Yoshiki Kato, Teruo Tsunoda, Hajime Fukke, Teruaki Kobayashi +2 more 1980-02-19