MH

Masakazu Hirata

SI Seiko Instruments: 29 patents #36 of 1,437Top 3%
NT Ntn: 10 patents #157 of 1,364Top 15%
SP Sii Printek: 7 patents #11 of 73Top 20%
FC Fuji Electric Co.: 2 patents #952 of 2,643Top 40%
DL Denka Company Limited: 1 patents #223 of 434Top 55%
Overall (All Time): #55,873 of 4,157,543Top 2%
49
Patents All Time

Issued Patents All Time

Showing 26–49 of 49 patents

Patent #TitleCo-InventorsDate
8351304 Near-field optical head and information recording/reproducing device Majung Park, Manabu Oumi 2013-01-08
8323518 Fabrication method and fabrication apparatus of head using near field light Manabu Oumi, Majung Park 2012-12-04
8284636 Near-field thermally assisted magnetic recording head and recording apparatus thereof Manabu Oumi, Majung Park 2012-10-09
8270259 Near-field optical head including waveguide having polyhedron core Manabu Oumi, Majung Park 2012-09-18
8184506 Near-field optical head with inclined magnetic poles and information recording/reproducing device Manabu Oumi, Majung Park 2012-05-22
8059495 Head gimbal assembly and information recording and reproducing apparatus Sachiko Tanabe, Norio Chiba, Manabu Oumi, Yoko Shinohara, Yoshikazu Tanaka 2011-11-15
8054570 Recording head and data recording and reproducing apparatus Manabu Oumi, Majung Park 2011-11-08
8054714 Near field light assisted magnetic recording head and recording apparatus using the same Manabu Oumi, Majung Park 2011-11-08
8050170 Near field optical head and information recording and reproducing device Majung Park, Manabu Oumi 2011-11-01
8023366 Near-field optical head and information recording apparatus Manabu Oumi, Majung Park 2011-09-20
8011833 Retainer for roller bearing, and rolling bearing Hideyuki Tsutsui 2011-09-06
8003203 Resinous oil-retaining article and method for production thereof Hideyuki Tsutsui 2011-08-23
7966630 Head gimbal mechanism and information recording/reproducing apparatus Manabu Oumi, Majung Park 2011-06-21
7910198 Resinous porous article and method for production thereof Hideyuki Tsutsui 2011-03-22
7771125 Retainer for rolling bearing, and rolling bearing Hideyuki Tsutsui 2010-08-10
7703983 Sliding material and sliding bearing Hideyuki Tsutsui, Masaki Egami 2010-04-27
7635437 Method of manufacturing near field light generation element Manabu Oumi, Koichi Shibata 2009-12-22
7132055 Method of producing near field optical head Manabu Oumi 2006-11-07
7113669 Near field optical head and information recording and reproducing apparatus mounted with the near field optical head Manabu Oumi, Koichi Shibata 2006-09-26
6673750 Lubricating composition Atsushi Morooka, Hidenobu Mikami, Toshiyuki Mizutani, Seiichi Takada, Masaaki Honda +2 more 2004-01-06
6390681 Dynamic pressure bearing-unit Tsugito Nakazeki, Kazuo Okamura, Isao Komori 2002-05-21
5955402 Biodegradable lubricative resin composition Mari Kataoka, Shoji Obuchi, Masanobu Ajioka 1999-09-21
5697709 Dynamic pressure type bearing device Natsuhiko Mori, Takashi Minami, Yasuhiro Yamamoto, Kiyotaka Kusunoki 1997-12-16
5375933 Rolling contact bearing protected against electrolytic corrosion Tsutomu Mizutani 1994-12-27