Takekuma; Ikuko

Patent Applications and Registrations

Patent applications and USPTO patent grants for Takekuma; Ikuko.The latest application filed is for "perpendicular magnetic recording medium and magnetic storage apparatus using the same".

Company Profile

1.22.30

Takekuma; Ikuko - Kanagawa JP
Takekuma; Ikuko - Yokohama JP
Takekuma; Ikuko - Yokohama-shi JP
TAKEKUMA; Ikuko - Tokyo JP
Takekuma; Ikuko - Odawara 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
Perpendicular magnetic recording medium Grant 10,276,192 - Hirotsune , et al.	2019-04-30
Perpendicular magnetic recording media having novel magnetic under-layer structure Grant 9,472,228 - Hirotsune , et al. October 18, 2	2016-10-18
Perpendicular Magnetic Recording Medium And Magnetic Storage Apparatus Using The Same App 20160118071 - Hirotsune; Akemi ; et al.	2016-04-28
Perpendicular magnetic recording media having novel seed layer Grant 9,117,477 - Hirotsune , et al. August 25, 2	2015-08-25
Perpendicular Magnetic Recording Medium App 20150017480 - Hirotsune; Akemi ; et al.	2015-01-15
Perpendicular Magnetic Recording Media Having Novel Magnetic Under-layer Structure App 20140355156 - Hirotsune; Akemi ; et al.	2014-12-04
Perpendicular Magnetic Recording Media Having Novel Seed Layer App 20140334039 - Hirotsune; Akemi ; et al.	2014-11-13
Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus using the same Grant 8,771,849 - Nemoto , et al. July 8, 2	2014-07-08
Magnetic storage apparatus Grant 8,709,618 - Takekuma , et al. April 29, 2	2014-04-29
Magnetic recording medium including plural FePt alloy layers including carbon, oxides or nitrides Grant 8,679,654 - Nemoto , et al. March 25, 2	2014-03-25
Magnetic Recording Medium App 20120225325 - NEMOTO; HIROAKI ; et al.	2012-09-06
Magnetic Recording Medium And Magnetic Recording Apparatus App 20120214021 - Sayama; Junichi ; et al.	2012-08-23
Perpendicular Magnetic Recording Medium And Manufacturing Method Of The Same App 20120052330 - TAKEKUMA; Ikuko ; et al.	2012-03-01
Perpendicular magnetic recording medium and system having a magnetic recording layer with a perpendicular recording layer, a magnetic coupling layer, and a writing assist layer Grant 8,000,060 - Zhang , et al. August 16, 2	2011-08-16
Perpendicular magnetic recording medium and magnetic storage apparatus using the same Grant 7,701,667 - Tamai , et al. April 20, 2	2010-04-20
Perpendicular magnetic recording medium and manufacturing of the same Grant 7,651,795 - Tamai , et al. January 26, 2	2010-01-26
Perpendicular magnetic recording medium for high density recording and manufacturing of the same Grant 7,641,989 - Takekuma , et al. January 5, 2	2010-01-05
Perpendicular magnetic recording medium and method of manufacturing it Grant 7,625,646 - Hirayama , et al. December 1, 2	2009-12-01
Perpendicular magnetic recording medium and manufacturing of the same Grant 7,625,644 - Ichihara , et al. December 1, 2	2009-12-01
Perpendicular magnetic recording media and magnetic storage apparatus using the same Grant 7,618,722 - Hirayama , et al. November 17, 2	2009-11-17
Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus using the same App 20090195924 - Nemoto; Hiroaki ; et al.	2009-08-06
Perpendicular magnetic recording medium for high density magnetic recording and manufacturing of the same Grant 7,534,507 - Arai , et al. May 19, 2	2009-05-19
Perpendicular magnetic recording medium and magnetic storage apparatus using the same App 20090116137 - Takekuma; Ikuko ; et al.	2009-05-07
Perpendicular magnetic recording media Grant 7,510,789 - Hirayama , et al. March 31, 2	2009-03-31
Perpendicular magnetic recording medium and magnetic recording and reproducing apparatus using the same App 20090073599 - Nemoto; Hiroaki ; et al.	2009-03-19
Perpendicular magnetic recording medium, method of evaluating magnetic properties of the same Grant 7,457,064 - Nemoto , et al. November 25, 2	2008-11-25
Perpendicular Magnetic Recording Medium With Granular Structured Magnetic Recording Layer, Method For Producing The Same, And Magnetic Recording Apparatus App 20080186627 - Hirayama; Yoshiyuki ; et al.	2008-08-07
Perpendicular magnetic recording medium and hard disk drive using the same App 20080180843 - Zhang; Zhengang ; et al.	2008-07-31
Perpendicular magnetic recording media and magnetic storage apparatus using the same App 20080182134 - Hirayama; Yoshiyuki ; et al.	2008-07-31
Perpendicular magnetic recording media and magnetic storage apparatus using the same Grant 7,368,185 - Hirayama , et al. May 6, 2	2008-05-06
Magnetic storage device App 20070254189 - Nakagawa; Hiroyuki ; et al.	2007-11-01
Magnetic storage apparatus App 20070223142 - Takekuma; Ikuko ; et al.	2007-09-27
Perpendicular magnetic recording medium, method of evaluating magnetic properties of the same App 20070217048 - Nemoto; Hiroaki ; et al.	2007-09-20
Perpendicular magnetic recording medium and magnetic storage apparatus using the same App 20070188924 - Tamai; Ichiro ; et al.	2007-08-16
Perpendicular magnetic recording medium and method of manufacturing it App 20060134467 - Hirayama; Yoshiyuki ; et al.	2006-06-22
Perpendicular magnetic recording medium for high density recording and manufacturing of the same App 20060127703 - Takekuma; Ikuko ; et al.	2006-06-15
Perpendicular magnetic recording medium with granular structured magnetic recording layer, method for producing the same, and magnetic recording apparatus App 20060088737 - Hirayama; Yoshiyuki ; et al.	2006-04-27
Perpendicular magnetic recording medium and manufacturing of the same App 20060088736 - Ichihara; Takayuki ; et al.	2006-04-27
Perpendicular magnetic recording medium for high density magnetic recording and manufacturing of the same App 20060088734 - Arai; Reiko ; et al.	2006-04-27
Perpendicular magnetic recording medium and method of manufacturing it Grant 7,033,686 - Hirayama , et al. April 25, 2	2006-04-25
Magnetic recording medium and method for production thereof App 20060076233 - Honda; Yoshinori ; et al.	2006-04-13
Perpendicular magnetic recording medium and manufacturing of the same App 20060057431 - Tamai; Ichiro ; et al.	2006-03-16
Perpendicular magnetic recording media App 20050227121 - Hirayama, Yoshiyuki ; et al.	2005-10-13
Perpendicular magnetic recording media Grant 6,916,557 - Hirayama , et al. July 12, 2	2005-07-12
Perpendicular magnetic recording media and magnetic storage apparatus using the same App 20050142388 - Hirayama, Yoshiyuki ; et al.	2005-06-30
Perpendicular magnetic recording medium and manufacturing of the same App 20050058854 - Takekuma, Ikuko ; et al.	2005-03-17
perpendicular magnetic recording medium and method of manufacturing it App 20040191571 - Hirayama, Yoshiyuki ; et al.	2004-09-30
Perpendicular magnetic recording medium App 20040146747 - Nemoto, Hiroaki ; et al.	2004-07-29
Perpendicular magnetic recording media App 20040038083 - Hirayama, Yoshiyuki ; et al.	2004-02-26

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