Roppongi; Tetsuya

Patent Applications and Registrations

Patent applications and USPTO patent grants for Roppongi; Tetsuya.The latest application filed is for "magnetoresistance effect device".

Company Profile

9.87.56

Roppongi; Tetsuya - Milpitas CA
Roppongi; Tetsuya - San Jose CA
Roppongi; Tetsuya - Tokyo JP
Roppongi; Tetsuya - Chuo-ku JP
Roppongi; Tetsuya - Kawasaki JP
Roppongi, Tetsuya - Kawasaki-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
Magnetic head including spin torque oscillator Grant 11,289,117 - Sasaki , et al. March 29, 2	2022-03-29
Magnetic head including spin torque oscillator Grant 11,211,082 - Sasaki , et al. December 28, 2	2021-12-28
Magnetic flux guiding device with spin torque oscillator (STO) film having one or more negative spin polarization layers in assisted writing application Grant 10,937,450 - Kawasaki , et al. March 2, 2	2021-03-02
Magnetic head with a main pole including first and second layers and manufacturing method for the same Grant 10,839,829 - Sasaki , et al. November 17, 2	2020-11-17
Magnetic head including spin torque oscillator and manufacturing method for the same Grant 10,803,888 - Sasaki , et al. October 13, 2	2020-10-13
Magnetic head including spin torque oscillator and manufacturing method for the same Grant 10,748,559 - Araki , et al. A	2020-08-18
Magnetoresistance effect device Grant 10,559,412 - Kaizu , et al. Feb	2020-02-11
Magnetic flux guiding device with antiferromagnetically coupled (AFC) spin polarizer in assisted writing application Grant 10,522,174 - Chen , et al. Dec	2019-12-31
Magnetic flux guiding device with antiferromagnetically coupled (AFC) oscillator in assisted writing application Grant 10,490,216 - Chen , et al. Nov	2019-11-26
Magnetic flux guiding device with antiferromagnetically coupled (AFC) spin polarizer in assisted writing application Grant 10,424,326 - Chen , et al. Sept	2019-09-24
Magnetoresistance Effect Device App 20190180901 - KAIZU; Akimasa ; et al.	2019-06-13
Magnetic recording head with spin torque oscillator layers satisfying width, thickness and angle relationship formulas Grant 10,121,497 - Takahashi , et al. November 6, 2	2018-11-06
Magnetic recording head with spin torque oscillator, head gimbal assembly and magnetic recording apparatus Grant 10,109,302 - Shinohara , et al. October 23, 2	2018-10-23
Magnetic recording head with spin torque oscillator, head gimbal assembly and magnetic recording apparatus Grant 10,032,470 - Degawa , et al. July 24, 2	2018-07-24
Multilayer element including base multilayer body, magnetic sensor and microwave assisted magnetic head Grant 9,934,797 - Takahashi , et al. April 3, 2	2018-04-03
Microwave assisted magnetic recording head with spin torque oscillator corner angle relationship, head gimbal assembly, and magnetic recording device Grant 9,824,701 - Tang , et al. November 21, 2	2017-11-21
Microwave Assisted Magnetic Recording Head With Spin Torque Oscillator Corner Angle Relationship, Head Gimbal Assembly, And Magnetic Recording Device App 20170309299 - TANG; Zhenyao ; et al.	2017-10-26
Multilayer Element Including Base Multilayer Body, Magnetic Sensor And Microwave Assisted Magnetic Head App 20170309301 - TAKAHASHI; Hirokazu ; et al.	2017-10-26
Microwave assisted magnetic head, head gimbal assembly, and magnetic recording device Grant 9,741,373 - Shinohara , et al. August 22, 2	2017-08-22
Method Of Setting Flying Height And Flying Height Setting Device App 20160019922 - OTA; Norikazu ; et al.	2016-01-21
Method of setting flying height and flying height setting device Grant 9,230,586 - Ota , et al. January 5, 2	2016-01-05
Thermal Assisted Magnetic Recording Head With Protrusion On Leading Side Of Plasmon Generator App 20150332717 - HARA; Kenta ; et al.	2015-11-19
Thermal assisted magnetic recording head with protrusion on leading side of plasmon generator Grant 9,190,084 - Hara , et al. November 17, 2	2015-11-17
Thermal assisted magnetic recording head utilizing uncoupled light Grant 9,165,582 - Hara , et al. October 20, 2	2015-10-20
Thermal Assisted Magnetic Recording Head Utilizing Uncoupled Light App 20150294678 - HARA; Shinji ; et al.	2015-10-15
Thermally-assisted magnetic recording head, head gimbals assembly, head arm assembly and magnetic recording unit Grant 9,153,267 - Komura , et al. October 6, 2	2015-10-06
Plasmon generator and thermally-assisted magnetic recording head having the same Grant 8,964,514 - Hirata , et al. February 24, 2	2015-02-24
Thermally-assisted Magnetic Recording Head Using Near-field Light App 20140241136 - TSUTSUMI; Takeshi ; et al.	2014-08-28
Thermally-assisted magnetic recording head using near-field light Grant 8,817,581 - Tsutsumi , et al. August 26, 2	2014-08-26
Apparatus for measuring magnetic field of microwave-assisted head Grant 8,680,855 - Sato , et al. March 25, 2	2014-03-25
Plasmon Generator And Thermally-assisted Magnetic Recording Head Having The Same App 20140043948 - HIRATA; Kei ; et al.	2014-02-13
Thermally-assisted magnetic recording head including a magnetic pole and a heating element Grant 8,605,387 - Hirata , et al. December 10, 2	2013-12-10
Apparatus For Measuring Magnetic Field Of Microwave-assisted Head App 20130301162 - SATO; Isamu ; et al.	2013-11-14
Thermally assisted magnetic head, magnetic head device and magnetic recording/reproducing apparatus including a recording element and a near-field light generating element Grant 8,570,843 - Hirata , et al. October 29, 2	2013-10-29
Thermally-assisted Magnetic Recording Head Including A Magnetic Pole And A Heating Element App 20130229730 - HIRATA; Kei ; et al.	2013-09-05
Thermally Assisted Magnetic Head, Magnetic Head Device And Magnetic Recording/reproducing Apparatus Including A Recording Element And A Near-field Light Generating Element. App 20130215725 - HIRATA; Kei ; et al.	2013-08-22
Thermally-assisted magnetic recording head including a plasmon generator and a magnetic pole Grant 8,503,270 - Kawamori , et al. August 6, 2	2013-08-06
Thermally-assisted magnetic recording head capable of preventing propagated light being absorbed by magnetic pole Grant 8,462,594 - Aoki , et al. June 11, 2	2013-06-11
Heat-assisted magnetic write head, head gimbals assembly, head arm assembly, and magnetic disk device Grant 8,437,230 - Aoki , et al. May 7, 2	2013-05-07
Thermally-assisted magnetic recording head, head gimbal assembly and magnetic recording device Grant 8,400,885 - Miyauchi , et al. March 19, 2	2013-03-19
Magnetic recording element used for thermally-assisted magnetic recording Grant 8,385,160 - Hara , et al. February 26, 2	2013-02-26
Heat assist magnetic write head, head gimbals assembly, head arm assembly, and magnetic disk device Grant 8,374,062 - Tanaka , et al. February 12, 2	2013-02-12
Apparatus for measuring magnetic field of microwave-assisted head Grant 8,358,127 - Sato , et al. January 22, 2	2013-01-22
Thermally-assisted magnetic recording head including a protruding member Grant 8,325,570 - Tanaka , et al. December 4, 2	2012-12-04
Thermally-assisted magnetic recording head comprising near-field light generator Grant 8,325,567 - Miyauchi , et al. December 4, 2	2012-12-04
Thermally-assisted Magnetic Recording Head, Head Gimbal Assembly And Magnetic Recording Device App 20120275280 - MIYAUCHI; Daisuke ; et al.	2012-11-01
Microwave Assisted Magnetic Head And Magnetic Disk Device App 20120230167 - AOYAMA; Tsutomu ; et al.	2012-09-13
Microwave assisted magnetic head and magnetic disk device Grant 8,264,916 - Aoyama , et al. September 11, 2	2012-09-11
Heat-assisted Magnetic Write Head, Head Gimbals Assembly, Head Arm Assembly, And Magnetic Disk Device App 20120213042 - AOKI; Susumu ; et al.	2012-08-23
Thermally-assisted magnetic recording head having a gap between propagation edge and magnetic pole Grant 8,208,349 - Tanaka , et al. June 26, 2	2012-06-26
Thermally-assisted magnetic recording head and thermally-assisted magnetic recording method Grant 8,164,986 - Aoki , et al. April 24, 2	2012-04-24
Heat Assist Magnetic Write Head, Head Gimbals Assembly, Head Arm Assembly, And Magnetic Disk Device App 20120075965 - TANAKA; Kosuke ; et al.	2012-03-29
Magnetoresistive element and thin film magnetic head Grant 8,144,437 - Miyauchi , et al. March 27, 2	2012-03-27
Heat-assisted magnetic recording head including plasmon generator Grant 8,125,857 - Tanaka , et al. February 28, 2	2012-02-28
Magnetic Recording Element Used For Thermally-assisted Magnetic Recording App 20120014230 - HARA; Shinji ; et al.	2012-01-19
Magnetic recording apparatus provided with microwave-assisted head Grant 8,094,399 - Roppongi , et al. January 10, 2	2012-01-10
Magnetoresistive Element And Thin Film Magnetic Head App 20110317313 - MIYAUCHI; Daisuke ; et al.	2011-12-29
Thermally-assisted Magnetic Recording Head Including Plasmon Generator App 20110317528 - MIYAUCHI; Daisuke ; et al.	2011-12-29
Thermally-assisted magnetic recording head including plasmon generator Grant 8,077,558 - Tsutsumi , et al. December 13, 2	2011-12-13
Thermally-assisted magnetic recording head including plasmon generator Grant 8,077,559 - Miyauchi , et al. December 13, 2	2011-12-13
Thermally-assisted Magnetic Recording Head Including Plasmon Generator App 20110286128 - TSUTSUMI; Takeshi ; et al.	2011-11-24
Perpendicular magnetic write head having a thin film coil generating a magnetic flux and method of manufacturing perpendicular magnetic write head, and magnetic write device Grant 8,064,163 - Ota , et al. November 22, 2	2011-11-22
Apparatus For Measuring Magnetic Field Of Microwave-assisted Head App 20110248710 - SATO; Isamu ; et al.	2011-10-13
Heat-assisted Magnetic Recording Head Including Plasmon Generator App 20110228419 - Tanaka; Kosuke ; et al.	2011-09-22
Magnetic Recording Apparatus Provided with Microwave-Assisted Head App 20110222185 - Roppongi; Tetsuya ; et al.	2011-09-15
Thermally-Assisted Magnetic Recording Head Having Near-Field Optical Device with Propagation Edge App 20110176398 - Tanaka; Kosuke ; et al.	2011-07-21
Magnetic recording/reproducing system, and thin-film magnetic head having shield layers of specified widths Grant 7,983,009 - Ota , et al. July 19, 2	2011-07-19
Thin-film magnetic head with heating portion and protrusion adjustment portion, head gimbal assembly equipped head, magnetic recording/reproducing apparatus equipped HGA, and manufacturing method of head Grant 7,974,046 - Ota , et al. July 5, 2	2011-07-05
Magnetic recording method using ferromagnetic resonance and thin-film magnetic head for using the method Grant 7,920,357 - Sato , et al. April 5, 2	2011-04-05
Thermally-Assisted Magnetic Recording Head Comprising Near-Field Light Generator App 20110058272 - Miyauchi; Daisuke ; et al.	2011-03-10
Thermally-assisted magnetic recording head and thermally-assisted magnetic recording method Grant 7,885,029 - Miyauchi , et al. February 8, 2	2011-02-08
Thin-film magnetic head having a recording head portion configured to record magnetic information on a patterned media, head gimbal assembly, and hard disk system Grant 7,872,831 - Hirata , et al. January 18, 2	2011-01-18
Thermally-assisted Magnetic Recording Head And Thermally-assisted Magnetic Recording Method App 20100302672 - AOKI; Susumu ; et al.	2010-12-02
Thin film magnetic head, head gimbal assembly, head arm assembly and magnetic disk device Grant 7,843,667 - Hirata , et al. November 30, 2	2010-11-30
Thermally-assisted Magnetic Recording Head And Thermally-assisted Magnetic Recording Method App 20100259845 - MIYAUCHI; Daisuke ; et al.	2010-10-14
Magnetic head apparatus and magnetic recording and reproducing apparatus Grant 7,791,838 - Sato , et al. September 7, 2	2010-09-07
Magnetic head for perpendicular magnetic recording in which gap thickness and pole layer shape are defined for suppressing occurrence of pole erase phenomenon Grant 7,554,766 - Ota , et al. June 30, 2	2009-06-30
Perpendicular magnetic recording head and method of manufacturing the same Grant 7,522,376 - Matono , et al. April 21, 2	2009-04-21
Thin film magnetic head having magnetic pole with controlled dimensions Grant 7,508,626 - Ichihara , et al. March 24, 2	2009-03-24
Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disk drive Grant 7,463,449 - Hirata , et al. December 9, 2	2008-12-09
Thin film magnetic head, head gimbal assembly, head arm assembly and magnetic disk device App 20080291582 - Hirata; Kei ; et al.	2008-11-27
Thin-film magnetic head for perpendicular magnetic recording and manufacturing method of thin-film magnetic head Grant 7,443,633 - Tagami , et al. October 28, 2	2008-10-28
Perpendicular magnetic write head and method of manufacturing perpendicular magnetic write head, and magnetic write device App 20080180858 - Ota; Norikazu ; et al.	2008-07-31
Magnetic recording method using ferromagnetic resonance and thin-film magnetic head for using the method App 20080151436 - Sato; Isamu ; et al.	2008-06-26
Thin-film magnetic head including non-magnetic layer for maintaining flatness of the top surface of pole portion layer Grant 7,379,268 - Sato , et al. May 27, 2	2008-05-27
Thin-film Magnetic Head With Heating Portion And Protrusion Adjustment Portion And Manufacturing Method Of Head App 20080094755 - OTA; Norikazu ; et al.	2008-04-24
Perpendicular magnetic recording element having stacked FM and AFM films applying magnetic bias along easy axis of soft magnetic film Grant 7,359,146 - Hirata , et al. April 15, 2	2008-04-15
Magnetic head for perpendicular magnetic recording Grant 7,312,951 - Hirata , et al. December 25, 2	2007-12-25
Thin-film Magnetic Head, Head Gimbal Assembly, And Hard Disk System App 20070279803 - Hirata; Kei ; et al.	2007-12-06
Magnetic Recording/reproducing System, And Thin-film Magnetic Head App 20070274003 - OTA; Norikazu ; et al.	2007-11-29
Magnetic head apparatus and magnetic recording and reproducing apparatus App 20070253106 - Sato; Isamu ; et al.	2007-11-01
Magnetic head for vertical magnetic recording including main pole layer having varying width and thickness, head gimbal assembly, and hard disk drive Grant 7,245,454 - Aoki , et al. July 17, 2	2007-07-17
Method of manufacturing magnetic head for perpendicular magnetic recording Grant 7,219,414 - Watabe , et al. May 22, 2	2007-05-22
Thin film magnetic head and method of manufacturing the same Grant 7,206,166 - Notsuke , et al. April 17, 2	2007-04-17
Thin film magnetic head and magnetic recording apparatus Grant 7,154,707 - Watabe , et al. December 26, 2	2006-12-26
Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disk drive App 20060158779 - Ota; Norikazu ; et al.	2006-07-20
Thin-film magnetic head for perpendicular magnetic recording and manufacturing method of thin-film magnetic head App 20060132972 - Tagami; Katsumichi ; et al.	2006-06-22
Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disk drive App 20060098335 - Hirata; Kei ; et al.	2006-05-11
Magnetic head for perpendicular magnetic recording App 20050286170 - Hirata, Kei ; et al.	2005-12-29
Method of manufacturing magnetic head for perpendicular magnetic recording App 20050229387 - Watabe, Yuichi ; et al.	2005-10-20
Thin film magnetic head and method of manufacturing the same Grant 6,952,325 - Sato , et al. October 4, 2	2005-10-04
Thin-film magnetic head and method of manufacturing same Grant 6,922,316 - Sato , et al. July 26, 2	2005-07-26
Method of manufacturing thin-film magnetic head Grant 6,901,651 - Sato , et al. June 7, 2	2005-06-07
Thin-film magnetic head and method of manufacturing same Grant 6,850,390 - Sato , et al. February 1, 2	2005-02-01
Perpendicular magnetic recording element, magnetic head, magnetic head device and magnetic recording/reproducing apparatus App 20050013044 - Hirata, Kei ; et al.	2005-01-20
Magnetic head for vertical magnetic recording and method of manufacturing same, head gimbal assembly, and hard disk drive App 20040228033 - Aoki, Susumu ; et al.	2004-11-18
Thin film magnetic head and magnetic recording apparatus App 20040190197 - Watabe, Yuichi ; et al.	2004-09-30
Thin film magnetic head App 20040184191 - Ichihara, Shigeru ; et al.	2004-09-23
Thin-film magnetic head and method of manufacturing same Grant 6,738,222 - Sato , et al. May 18, 2	2004-05-18
Thin film magnetic head and method of manufacturing the same App 20040090704 - Matono, Naoto ; et al.	2004-05-13
Thin-film magnetic head having two magnetic layers, one of which includes a pole portion layer and a yoke portion layer, and method of manufacturing same Grant 6,728,064 - Sato , et al. April 27, 2	2004-04-27
Combined slider and head for reading or writing information on a disk Grant D489,075 - Wada , et al. April 27, 2	2004-04-27
Perpendicular magnetic recording head having narrow recording gap and perpendicular magnetic recording apparatus using the same Grant 6,707,643 - Takeo , et al. March 16, 2	2004-03-16
Thin film magnetic head and method of manufacturing the same App 20040042118 - Notsuke, Yasuyuki ; et al.	2004-03-04
Perpendicular magnetic recording head and perpendicular magnetic recording apparatus Grant 6,639,754 - Taguchi , et al. October 28, 2	2003-10-28
Thin-film magnetic head and method of manufacturing same App 20030151851 - Sato, Yoshikazu ; et al.	2003-08-14
Thin film magnetic head and method of manufacturing the same App 20030112555 - Sato, Yoshikazu ; et al.	2003-06-19
Thin-film magnetic head and method of manufacturing same App 20020135937 - Sato, Yoshikazu ; et al.	2002-09-26
Thin-film magnetic head and method of manufacturing same App 20020109946 - Sato, Yoshikazu ; et al.	2002-08-15
Thin-film magnetic head and method of manufacturing same App 20020093763 - Sato, Yoshikazu ; et al.	2002-07-18
Method of manufacturing thin-film magnetic head App 20020078552 - Sato, Yoshikazu ; et al.	2002-06-27
Thin-film magnetic head and method of manufacturing same App 20020075595 - Sato, Yoshikazu ; et al.	2002-06-20
Perpendicular magnetic recording head and perpendicular magnetic recording apparatus App 20020039254 - Taguchi, Tomoko ; et al.	2002-04-04
Perpendicular magnetic recording head and perpendicular magnetic recording apparatus App 20020036863 - Takeo, Akihiko ; et al.	2002-03-28
Slider with negative and positive pressure generating portions and head including the same Grant 6,144,529 - Wada , et al. November 7, 2	2000-11-07