Koizumi; Gaku

Patent Applications and Registrations

Patent applications and USPTO patent grants for Koizumi; Gaku.The latest application filed is for "magnetic disk device".

Company Profile

13.21.17

Koizumi; Gaku - Kawasaki Kanagawa JP
Koizumi; Gaku - Yokohama Kanagawa JP
KOIZUMI; Gaku - Yokohama JP
Koizumi; Gaku - Kanagawa JP
Koizumi; Gaku - Ome JP
Koizumi; Gaku - Yokohama-shi JP
KOIZUMI; Gaku - Ome-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 disk device Grant 11,404,084 - Koizumi August 2, 2	2022-08-02
Magnetic Disk Device App 20220084551 - Koizumi; Gaku	2022-03-17
Magnetic Disk Device App 20220036923 - Koizumi; Gaku	2022-02-03
Magnetic disk device Grant 11,176,965 - Okada , et al. November 16, 2	2021-11-16
Magnetic Disk Device App 20210272597 - Okada; Mio ; et al.	2021-09-02
Magnetic head and disk device with heat actuators Grant 10,867,624 - Watanabe , et al. December 15, 2	2020-12-15
Magnetic disk device Grant 10,825,473 - Koizumi November 3, 2	2020-11-03
Magnetic recording device capable of stabilizing oscillations of high frequency assisted element Grant 10,741,201 - Koizumi , et al. A	2020-08-11
Magnetic Head And Disk Device Having The Same App 20200243108 - OHTAKE; Masaya ; et al.	2020-07-30
Magnetic Recording Device Capable Of Stabilizing Oscillations Of High Frequency Assisted Element App 20200211585 - Koizumi; Gaku ; et al.	2020-07-02
Magnetic head and disk device having gap layers with different magnetic relative permeabilities Grant 10,657,990 - Ohtake , et al.	2020-05-19
Magnetic Disk Device App 20200075046 - Koizumi; Gaku	2020-03-05
Magnetic head with high-frequency oscillating element and disk device comprising the same Grant 10,546,600 - Koizumi , et al. Ja	2020-01-28
Method for correcting position offset of the heads on two dimensional magnetic recording device Grant 10,529,365 - Tagami , et al. J	2020-01-07
Magnetic disk device Grant 10,504,543 - Koizumi Dec	2019-12-10
Magnetic disk device which controls a recording operation and a non-recording operation of a recording head and a recording head control method of the magnetic disk device Grant 10,403,308 - Koizumi , et al. Sep	2019-09-03
Magnetic recording apparatus Grant 10,360,931 - Ohtake , et al.	2019-07-23
Magnetic Disk Device And Read/write Offset Correction Method App 20190198050 - Tagami; Naoki ; et al.	2019-06-27
Magnetic Recording Apparatus App 20190189149 - OHTAKE; Masaya ; et al.	2019-06-20
Magnetic head having magnetic pole and shield, and magnetic recording and reproducing device Grant 10,276,193 - Narita , et al.	2019-04-30
Magnetic Head And Magnetic Recording And Reproducing Device App 20190088275 - NARITA; Naoyuki ; et al.	2019-03-21
Magnetic Head And Disk Device Having The Same App 20190066717 - OHTAKE; Masaya ; et al.	2019-02-28
Magnetic Disk Device And Recording Head Control Method App 20190051322 - Koizumi; Gaku ; et al.	2019-02-14
Magnetic disk drive and recording head control method Grant 10,014,009 - Koizumi July 3, 2	2018-07-03
Magnetic head, disk drive with the same and method of manufacturing magnetic head Grant 9,792,933 - Koizumi , et al. October 17, 2	2017-10-17
Magnetic Head, Disk Drive With The Same And Method Of Manufacturing Magnetic Head App 20170092304 - Koizumi; Gaku ; et al.	2017-03-30
Determining oscillation characteristic for high-frequency assisted magnetic recording device Grant 9,305,584 - Koizumi , et al. April 5, 2	2016-04-05
Determining Oscillation Characteristic For High-frequency Assisted Magnetic Recording Device App 20160064016 - Koizumi; Gaku ; et al.	2016-03-03
Disk storage apparatus and method for determining malfunction of high-frequency oscillating element Grant 8,896,947 - Koizumi , et al. November 25, 2	2014-11-25
Current drive type magnetic head and disk drive with the same Grant 8,885,296 - Koizumi November 11, 2	2014-11-11
Disk storage apparatus, write control apparatus and write control method Grant 8,810,954 - Taguchi , et al. August 19, 2	2014-08-19
Disk Storage Apparatus And Method For Determining Malfunction Of High-frequency Oscillating Element App 20140168808 - Koizumi; Gaku ; et al.	2014-06-19
Magnetic disk drive Grant 8,228,627 - Koizumi , et al. July 24, 2	2012-07-24
Magnetic Head And Disk Drive With The Same App 20120092787 - KOIZUMI; Gaku	2012-04-19
Magnetic head for perpendicular recording and disk drive with the same Grant 8,159,781 - Taguchi , et al. April 17, 2	2012-04-17
Magnetic Head And Disk Drive With The Same App 20110128652 - Taguchi; Tomoko ; et al.	2011-06-02
Magnetic Disk Drive App 20100157462 - KOIZUMI; Gaku ; et al.	2010-06-24

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