YM

Yoji Maruyama

HG HGST: 10 patents #263 of 1,677Top 20%
HI Hitachi: 6 patents #6,582 of 28,497Top 25%
HB Hgst Netherlands, B.V.: 1 patents #510 of 972Top 55%
Mitsubishi Electric: 1 patents #15,491 of 25,717Top 65%
📍 Iruma, JP: #15 of 400 inventorsTop 4%
Overall (All Time): #258,174 of 4,157,543Top 7%
18
Patents All Time

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #TitleCo-InventorsDate
8569871 Semiconductor device having a molded package Koichi Fujita, Kenji Hino 2013-10-29
8437102 Perpendicular magnetic head with side shield depth less than write gap film Takayuki Iwakura, Ichiro Ohdake, Masafumi Mochizuku 2013-05-07
7848053 Magnetic head and magnetic disk storage apparatus mounting the head Masafumi Mochizuki, Kimitoshi Etoh, Hiroshi Fukui 2010-12-07
7646564 Perpendicular magnetic recording head for high frequency drive Hideki Zaitsu, Ichiro Ohdake, Kazue Kudo, Masafumi Mochizuki 2010-01-12
7576952 Magnetic write head including a magnetic pole piece having a protrusion Tadayuki Iwakura, Makoto Morijiri, Shigekazu Ohtomo, Ichiro Ohdake 2009-08-18
7551395 Main pole structure coupled with trailing gap for perpendicular recording Kazue Kudo, Ichiro Ohdake, Tadayuki Iwakura 2009-06-23
7542244 Magnetic head to prevent undesired data erasure and magnetic disk storage having the same Hiroshi Fukui, Masafumi Mochizuki, Tomohiro Okada 2009-06-02
7483243 Magnetic head with recessed portion, and magnetic recording and reproduction apparatus comprising the same Hiroshi Fukui, Masafumi Mochizuki, Kaori Suzuki 2009-01-27
7330324 Magnetic disk drive having a function for using a thermal protrusion amount for flying height management and an inspection device having such a function Akira Morinaga, Hiroshi Ide, Norifumi Miyamoto 2008-02-12
7180704 Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head Masafumi Mochizuki, Atsushi Nakamura 2007-02-20
7061726 Thin film magnetic head Shigekazu Ohtomo, Hiroshi Fukui, Sunao Yonekawa, Tadayuki Iwakura 2006-06-13
7031108 Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head Masafumi Mochizuki, Atsushi Nakamura 2006-04-18
6898057 Thin film magnetic head having multiple layered films determining track width imbedded in an insulating film and method of manufacturing the same Tetsuya Okai, Makoto Morijiri, Kimitoshi Etoh 2005-05-24
6710972 Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head Masafumi Mochizuki, Atsushi Nakamura 2004-03-23
6469873 Magnetic head and magnetic storage apparatus using the same Yoshio Suzuki, Ryoichi Nakatani, Hisashi Takano 2002-10-22
6392849 Magnetic head with dual spin valve element for differential operation Yoshio Suzuki, Ryoichi Nakatani, Hisashi Takano 2002-05-21
6118635 Magnetic storage apparatus having a head with sliding pads Makoto Aihara, Teruyoshi Higashiya, Mikio Tokuyama, Sadanori Nagaike, Tetsuji Higashijima +2 more 2000-09-12
5023473 Drive circuit for Bloch line memory Takashi Toyooka, Ryo Suzuki 1991-06-11