Maruyama; Yoji

Patent Applications and Registrations

Patent applications and USPTO patent grants for Maruyama; Yoji.The latest application filed is for "magnetic head for recording magnetic data by changing the magnetization direction of a magnetic recording layer of a magnetic medium".

Company Profile

0.17.21

Maruyama; Yoji - Hiroshima N/A JP
Maruyama; Yoji - Saitama N/A JP
Maruyama; Yoji - Tokyo JP
Maruyama; Yoji - Iruma JP
Maruyama; Yoji - Fujisawa JP
Maruyama, Yoji - Fujisawa-shi JP
Maruyama, Yoji - Iruma-shi JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Semiconductor device having a molded package Grant 8,569,871 - Fujita , et al. October 29, 2	2013-10-29
Perpendicular magnetic head with side shield depth less than write gap film Grant 8,437,102 - Maruyama , et al. May 7, 2	2013-05-07
Magnetic head and magnetic disk storage apparatus mounting the head Grant 7,848,053 - Mochizuki , et al. December 7, 2	2010-12-07
Magnetic Head For Recording Magnetic Data By Changing The Magnetization Direction Of A Magnetic Recording Layer Of A Magnetic Medium App 20100053812 - Maruyama; Yoji ; et al.	2010-03-04
Perpendicular magnetic recording head for high frequency drive Grant 7,646,564 - Maruyama , et al. January 12, 2	2010-01-12
Magnetic Head For Perpendicular Recording And Magnetic Recording Apparatus App 20090290257 - Kimura; Wataru ; et al.	2009-11-26
Magnetic write head including a magnetic pole piece having a protrusion Grant 7,576,952 - Maruyama , et al. August 18, 2	2009-08-18
Main pole structure coupled with trailing gap for perpendicular recording Grant 7,551,395 - Maruyama , et al. June 23, 2	2009-06-23
Thin film magnetic head and manufacturing method thereof App 20090154014 - Kudo; Kazue ; et al.	2009-06-18
Magnetic head to prevent undesired data erasure and magnetic disk storage having the same Grant 7,542,244 - Fukui , et al. June 2, 2	2009-06-02
Perpendicular magnetic recording head and method for manufacturing the same App 20090059427 - Kudo; Kazue ; et al.	2009-03-05
Magnetic head with recessed portion, and magnetic recording and reproduction apparatus comprising the same Grant 7,483,243 - Fukui , et al. January 27, 2	2009-01-27
Perpendicular recording magnetic head App 20080231994 - Kimura; Wataru ; et al.	2008-09-25
Magnetic head and method of manufacturing the same App 20080198507 - Maruyama; Yoji ; et al.	2008-08-21
Magnetic disk drive having a function for using a thermal protrusion amount for flying height management and an inspection device having such a function Grant 7,330,324 - Morinaga , et al. February 12, 2	2008-02-12
Magnetic head and magnetic disk storage apparatus mounting the head App 20070188921 - Mochizuki; Masafumi ; et al.	2007-08-16
Perpendicular head with the shield which approaches through the continuous non-magnetic film to the flare point of the main pole App 20070146929 - Maruyama; Yoji ; et al.	2007-06-28
Semiconductor device having a molded package App 20070132110 - Fujita; Koichi ; et al.	2007-06-14
Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head Grant 7,180,704 - Mochizuki , et al. February 20, 2	2007-02-20
Main pole structure coupled with trailing gap for perpendicular recording App 20070019327 - Maruyama; Yoji ; et al.	2007-01-25
Perpendicular magnetic recording head for high frequency drive App 20060203384 - Maruyama; Yoji ; et al.	2006-09-14
Thin film magnetic head Grant 7,061,726 - Ohtomo , et al. June 13, 2	2006-06-13
Magnetic head to prevent undesired data erasure and magnetic disk storage having the same App 20060082930 - Fukui; Hiroshi ; et al.	2006-04-20
Magnetic head with recessed portion, and magnetic recording and reproduction apparatus comprising the same App 20060082931 - Fukui; Hiroshi ; et al.	2006-04-20
Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head Grant 7,031,108 - Mochizuki , et al. April 18, 2	2006-04-18
Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head App 20050213244 - Mochizuki, Masafumi ; et al.	2005-09-29
Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head App 20050207061 - Mochizuki, Masafumi ; et al.	2005-09-22
Magnetic write head App 20050122622 - Maruyama, Yoji ; et al.	2005-06-09
Thin film magnetic head having multiple layered films determining track width imbedded in an insulating film and method of manufacturing the same Grant 6,898,057 - Okai , et al. May 24, 2	2005-05-24
Magnetic disk drive having a function for using a thermal protrusion amount for flying height management and an inspection device having such a function App 20050046985 - Morinaga, Akira ; et al.	2005-03-03
Thin film magnetic head App 20040223265 - Ohtomo, Shigekazu ; et al.	2004-11-11
Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head App 20040184189 - Mochizuki, Masafumi ; et al.	2004-09-23
Thin film magnetic head and method for manufacturing the same App 20040100730 - Okai, Tetsuya ; et al.	2004-05-27
Magnetic head for perpendicular recording and magnetic disk storage apparatus mounting the head Grant 6,710,972 - Mochizuki , et al. March 23, 2	2004-03-23
Magnetic head and magnetic storage apparatus using the same Grant 6,469,873 - Maruyama , et al. October 22, 2	2002-10-22
Magnetic head and magnetic storage apparatus using the same App 20010006443 - Maruyama, Yoji ; et al.	2001-07-05

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