NK

Noriyuki Kumasaka

HI Hitachi: 51 patents #272 of 28,497Top 1%
NC Nihon Micro Coating Co.: 8 patents #3 of 68Top 5%
HM Hitachi Maxell: 1 patents #659 of 1,211Top 55%
RJ Research Development Corporation Of Japan: 1 patents #170 of 402Top 45%
📍 Wenatchee, WA: #2 of 245 inventorsTop 1%
🗺 Washington: #809 of 76,902 inventorsTop 2%
Overall (All Time): #40,720 of 4,157,543Top 1%
59
Patents All Time

Issued Patents All Time

Showing 1–25 of 59 patents

Patent #TitleCo-InventorsDate
8348721 Method of producing glass substrate for perpendicular magnetic recording disk Yuji Horie, Tatsuya Tanifuji 2013-01-08
8148301 Method for polishing tape-shaped substrate for oxide superconductor, oxide superconductor, and base material for oxide superconductor Sanaki Horimoto, Takuya Nagamine, Takehiro Watanabe, Fumi Murokawa, Yuji Horie +1 more 2012-04-03
8143194 Method for polishing tape-shaped substrate for oxide superconductor, oxide superconductor, and base material for oxide superconductor Sanaki Horimoto, Takuya Nagamine, Takehiro Watanabe, Fumi Murokawa, Yuji Horie +1 more 2012-03-27
8049990 Cleaning tape and method of producing same Yuji Horie, Yasuyuki Yokota, Jun Tamura, Akihiro Sakamoto 2011-11-01
7857876 Method of producing polishing material comprising diamond clusters Yuji Horie, Mitsuru Saito, Kazuei Yamaguchi 2010-12-28
7811972 Method of polishing tape-shaped substrate and substrate for oxide superconductor Yuji Horie, Sanaki Horimoto 2010-10-12
7585341 Polishing material comprising diamond clusters Yuji Horie, Mitsuru Saito, Kazuei Yamaguchi 2009-09-08
7374473 Texturing slurry and texturing method by using same Yuji Horie, Mitsuru Saito, Kazuei Yamaguchi 2008-05-20
6512655 Magnetic head with sealing glass composition Hiroki Yamamoto, Takashi Naito, Takashi Namekawa, Ken Takahashi, Kenkichi Inada 2003-01-28
6503858 Glass composition, structure, and apparatus using the same Hiroki Yamamoto, Takashi Naito, Takashi Namekawa, Ken Takahashi, Kenkichi Inada 2003-01-07
6477133 Disk drive with unbalance correcting mechanism Yasuhiro Yoshimura, Yoshishige Endo, Katsutoshi Nii, Yoshihiro Satou, Yoshiaki Yamauchi +3 more 2002-11-05
6369980 Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unit Katsutoshi Nii, Kenji Tomida, Hiroshi Nishida, Kouki Uefune, Yuuichi Yanagase +4 more 2002-04-09
6369981 Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unit Katsutoshi Nii, Kenji Tomida, Hiroshi Nishida, Kouki Uefune, Yuuichi Yanagase +4 more 2002-04-09
6339676 Video signal recording and reproducing apparatus compatible with analog and digital video signal recording and reproducing Nobutaka Amada, Hitoaki Owashi, Takaharu Noguchi, Hideo Zama 2002-01-15
6256288 Disk apparatus and motor therefor Yoshiaki Yamauchi, Takashi Kouno, Shinobu Yoshida, Katsutoshi Nii, Ikuo Nishida +1 more 2001-07-03
6243230 Disk drive unit with hydrodynamic fluid bearing unit and disk device with said drive unit Katsutoshi Nii, Kenji Tomida, Hiroshi Nishida, Kouki Uefune, Yuuichi Yanagase +4 more 2001-06-05
6150027 Glass composition, structure, and apparatus using the same Hiroki Yamamoto, Takashi Naito, Takashi Namekawa, Ken Takahashi, Kenkichi Inada 2000-11-21
6104862 Video signal recording and reproducing apparatus compatible with analog and digital video signal recording and reproducing Nobutaka Amada, Hitoaki Owashi, Takaharu Noguchi, Hideo Zama 2000-08-15
6033792 Soft magnetic thin film, and magnetic head and magnetic recording device using the same Fumiyoshi Kirino, Shigekazu Otomo, Nagatugu Koiso, Takeshi Miura 2000-03-07
6031694 Magnetic head with protective film comprising amorphous CaMgSi.sub.2 b. O.su6, Mg.sub.2 SiO.sub.4 and/or MgAl.sub.2 O.sub.4 Takuo Tamura, Asao Nakano, Kazufumi Suenaga, Kiyoshi Ogata, Souzou Sasajima 2000-02-29
5879798 Heat resistant, high saturation magnetic flux density film Toshio Kobayashi, Ryoichi Nakatani, Hitoshi Nakamura 1999-03-09
5873955 Soft magnetic thin film, and magnetic head and magnetic recording device using the same Fumiyoshi Kirino, Shigekazu Otomo, Nagatugu Koiso, Takeshi Miura 1999-02-23
5858548 Soft magnetic thin film, and magnetic head and magnetic recording device using the same Fumiyoshi Kirino, Shigeharu Otomo, Nagatugu Koiso, Takeshi Miura 1999-01-12
5463518 Magnetic head and magnetic recording and reproducing apparatus using a superconducting quantum interference device Shigekazu Otomo, Kazuo Shiiki, Takeo Yamashita, Noritoshi Saito, Yoshinobu Tarutani 1995-10-31
5290738 Material for nonmagnetic oxide substrate and magnetic head Hiroshi Tomishima, Toshikazu Nishiyama, Nobuyuki Yamada, Mitsuo Abe 1994-03-01