Tagawa; Ikuya

Patent Applications and Registrations

Patent applications and USPTO patent grants for Tagawa; Ikuya.The latest application filed is for "readback of information from a moving ferroelectric recording medium by means of a near-field optical transducer and 2nd harmonic generation in the medium".

Company Profile

1.33.31

Tagawa; Ikuya - Hiratsuka JP
Tagawa; Ikuya - Hiratsuka-shi JP
Tagawa; Ikuya - Kanagawa JP
Tagawa; Ikuya - Kawasaki 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
System and method for reading data recorded on ferroelectric storage medium by means of a near-field transducer Grant 10,283,146 - Matsumoto , et al.	2019-05-07
Readback Of Information From A Moving Ferroelectric Recording Medium By Means Of A Near-field Optical Transducer And 2nd Harmonic Generation In The Medium App 20180350397 - Matsumoto; Takuya ; et al.	2018-12-06
Hard disk drive with contact detection using a spin torque oscillator Grant 9,355,668 - Nishida , et al. May 31, 2	2016-05-31
Heat Sink For A Spin Torque Oscillator (sto) In Microwave Assisted Magnetic Recording (mamr) App 20150109699 - Boone; Carl ; et al.	2015-04-23
Heat sink for a spin torque oscillator (STO) in microwave assisted magnetic recording (MAMR) Grant 8,995,088 - Boone , et al. March 31, 2	2015-03-31
Implementing spin torque oscillator power-on oscillation checker using ramped STO bias differentiator in microwave-assisted magnetic recording (MAMR) hard disk drives Grant 8,917,465 - Contreras , et al. December 23, 2	2014-12-23
Hard Disk Drive With Contact Detection Using a Spin Torque Oscillator App 20140347969 - Nishida; Yasutaka ; et al.	2014-11-27
Magnetic data recording system with mirror image asymmetric magnetic write elements Grant 8,848,317 - Shiimoto , et al. September 30, 2	2014-09-30
Magnetic Data Recording System With Mirror Image Asymmetric Magnetic Write Elements App 20140177105 - Shiimoto; Masato ; et al.	2014-06-26
Energy-assisted magnetic recording head and systems thereof with environmental conditions control Grant 8,760,779 - Johns , et al. June 24, 2	2014-06-24
Magnetic storage apparatus, head drive controller, and head drive control method Grant 8,643,972 - Shiroishi , et al. February 4, 2	2014-02-04
Implementing integrated spin-torque oscillator and interface bias control for hard disk drives Grant 8,570,684 - Contreras , et al. October 29, 2	2013-10-29
Write track shift control in shingled-microwave-assisted magnetic recording (MAMR-SMR) Grant 8,553,507 - Tagawa , et al. October 8, 2	2013-10-08
Microwave-assisted Magnetic Recording Head And Systems Thereof With Environmental Conditions Control App 20130170060 - Johns; William D. ; et al.	2013-07-04
Magnetic Storage Apparatus, Head Drive Controller, And Head Drive Control Method App 20130083423 - Shiroishi; Yoshihiro ; et al.	2013-04-04
Magnetic Recording Head And Magnetic Disk Storage Device App 20110141616 - Tagawa; Ikuya ; et al.	2011-06-16
Controlling an overshoot amplitude level based on a recording data pattern in a magnetic disk drive Grant 7,830,631 - Nakagawa , et al. November 9, 2	2010-11-09
Thin film magnetic head wherein at least one of a return pole, a first shield, and a second shield has a reverse taper Grant 7,518,825 - Nishida , et al. April 14, 2	2009-04-14
Perpendicular hard disk drive resistive against external magnetic field Grant 7,486,485 - Hamaguchi , et al. February 3, 2	2009-02-03
Method of demagnetizing magnetic recording medium and apparatus for carrying out same Grant 7,468,852 - Nishida , et al. December 23, 2	2008-12-23
Magnetic head with soft magnetic shield and magnetic storage Grant 7,450,349 - Nishida , et al. November 11, 2	2008-11-11
Magnetic hard disk drive with countermeasure against spike noise Grant 7,428,115 - Nakagawa , et al. September 23, 2	2008-09-23
Magnetic recording system with improved magnetic shield Grant 7,408,738 - Nishida , et al. August 5, 2	2008-08-05
Magnetic disk drive App 20080043358 - Nakagawa; Takeshi ; et al.	2008-02-21
Method of demagnetizing magnetic recording medium and apparatus for carrying out same App 20060250716 - Nishida; Syuji ; et al.	2006-11-09
Thin film magnetic head App 20060139815 - Nishida; Syuji ; et al.	2006-06-29
Magnetic head with soft magnetic shield and magnetic storage App 20060119984 - Nishida; Yasutaka ; et al.	2006-06-08
Perpendicular hard disk drive resistive against external magnetic field App 20060092556 - Hamaguchi; Takehiko ; et al.	2006-05-04
Recording magnetic head and magnetic storage device using the same Grant 7,016,149 - Kutsuzawa , et al. March 21, 2	2006-03-21
Thin film head with nickel-iron alloy non-magnetic substratum between non-magnetic gap layer and upper magnetic pole layer Grant 6,970,324 - Ikeda , et al. November 29, 2	2005-11-29
Magnetic hard disk drive with countermeasure against spike noise App 20050233177 - Nakagawa, Takeshi ; et al.	2005-10-20
Magnetic recording system with soft magnetic shield App 20050225895 - Nishida, Yasutaka ; et al.	2005-10-13
Magnetic thin film and magnetic head using the same App 20050175864 - Ikeda, Shoji ; et al.	2005-08-11
Magnetic head App 20050135006 - Tagawa, Ikuya ; et al.	2005-06-23
Magnetoresistive transducer having stronger longitudinal bias field Grant 6,876,524 - Tagawa , et al. April 5, 2	2005-04-05
Soft magnetic film of FeCoMO having a high saturation flux density, a moderate soft magnetism and a uniaxial magnetic anisotropy Grant 6,828,046 - Ikeda , et al. December 7, 2	2004-12-07
Magnetic thin film, magnetic thin film forming method, and recording head Grant 6,822,831 - Ikeda , et al. November 23, 2	2004-11-23
Method of producing thin film magnetic head Grant 6,813,824 - Hasegawa , et al. November 9, 2	2004-11-09
Thin film magnetic head with short lower magnetic pole piece Grant 6,751,052 - Tagawa , et al. June 15, 2	2004-06-15
Magnetic recording medium and magnetic recording medium driver for the medium with N-type ferrimagnetic recording layer Grant 6,720,075 - Tagawa , et al. April 13, 2	2004-04-13
Magnetic head, method of manufacturing magnetic head and information recording apparatus Grant 6,624,972 - Nishida , et al. September 23, 2	2003-09-23
Recording magnetic head and magnetic storage device using the same App 20030174441 - Kutsuzawa, Tomoko ; et al.	2003-09-18
Thin film magnetic head Grant 6,614,620 - Tagawa , et al. September 2, 2	2003-09-02
Soft magnetic film having higher saturation magnetization App 20030147183 - Ikeda, Shoji ; et al.	2003-08-07
Thin film magnetic head including a coil insulating resin filler and an insulating metallic layer covering at least partly the insulating resin filler on a datum plane Grant 6,567,239 - Hasegawa , et al. May 20, 2	2003-05-20
Method of producing thin film magnetic head App 20030090835 - Hasegawa, Minoru ; et al.	2003-05-15
Magnetic head and method of manufacturing the same Grant 6,510,024 - Otsuka , et al. January 21, 2	2003-01-21
Soft magnetic film of FeCoMO having a high saturation flux density, a moderate soft magnetism and a uniaxial magnetic anisotropy App 20020150790 - Ikeda, Shoji ; et al.	2002-10-17
Magnetic thin film, magnetic thin film forming method, and recording head App 20020129875 - Ikeda, Shoji ; et al.	2002-09-19
Magnetic recording medium and magnetic recording medium driver for the medium App 20020094454 - Tagawa, Ikuya ; et al.	2002-07-18
Magnetoresistive transducer having stronger longitudinal bias field App 20020071224 - Tagawa, Ikuya ; et al.	2002-06-13
Thin film magnetic head App 20020048116 - Tagawa, Ikuya ; et al.	2002-04-25
Thin film magnetic head and magnetic head assembly employing the same App 20020024765 - Kutsuzawa, Tomoko ; et al.	2002-02-28
Magnetic head and method of manufacturing the same App 20010050830 - Otsuka, Yoshinori ; et al.	2001-12-13
Thin film magnetic head with tip sub-magnetic pole and method of manufacturing the same App 20010043445 - Nishida, Syuji ; et al.	2001-11-22
Information recording device App 20010043418 - Nishida, Syuji ; et al.	2001-11-22
Magnetic head and method of manufacturing the same Grant 6,282,776 - Otsuka , et al. September 4, 2	2001-09-04
Thin film magnetic head with tip sub-magnetic pole and method of manufacturing the same App 20010013992 - Tagawa, Ikuya ; et al.	2001-08-16
Spin valve head reducing barkhausen noise Grant 6,094,325 - Tagawa , et al. July 25, 2	2000-07-25
Recording head for single layer magnetic film perpendicular magnetization medium Grant 5,920,449 - Tagawa July 6, 1	1999-07-06

uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.

While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.

All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.