Kowang Liu

Person

Fremont, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Optimizing a current distribution in write heads for efficient ener...
- Patent number 12,094,497
- Issue date Sep 17, 2024
- Headway Technologies, Inc.
- Shehrin Sayed
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording head equipping a spin torque oscil...
- Patent number 12,073,857
- Issue date Aug 27, 2024
- Headway Technologies, Inc.
- Kei Hirata
- G11 - INFORMATION STORAGE
Information Patent Grant
Light source unit and thermally-assisted magnetic head
- Patent number 11,973,310
- Issue date Apr 30, 2024
- Sae Magnetics (H.K.) Ltd.
- Takashi Honda
- G11 - INFORMATION STORAGE
Information Patent Grant
Patterned reader shields for a cooler reader
- Patent number 11,289,116
- Issue date Mar 29, 2022
- Headway Technologies, Inc.
- Kowang Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Protective shields under touchdown conditions for thermally assiste...
- Patent number 11,211,084
- Issue date Dec 28, 2021
- SAE Magnetics (H.K.) Ltd.
- Qinghua Zeng
- G11 - INFORMATION STORAGE
Information Patent Grant
Heat sink structure for microwave-assisted magnetic recording (MAMR...
- Patent number 10,811,034
- Issue date Oct 20, 2020
- Headway Technologies, Inc.
- Yan Wu
- G11 - INFORMATION STORAGE
Information Patent Grant
Bumper pad design for TAMR drives
- Patent number 10,629,233
- Issue date Apr 21, 2020
- SAE Magnetics (H.K.) Ltd.
- Siu Yin Ngan
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor laser for thermally-assisted magnetic recording head
- Patent number 10,566,013
- Issue date Feb 18, 2020
- Sae Magnetics (H.K.) Ltd.
- Takashi Honda
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic core and coil design for double perpendicular magnetic rec...
- Patent number 10,482,905
- Issue date Nov 19, 2019
- Headway Technologies, Inc.
- Kowang Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Dual write heater for slider surface topography control in double p...
- Patent number 10,360,935
- Issue date Jul 23, 2019
- Headway Technologies, Inc.
- Kowang Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic core and coil design for double perpendicular magnetic rec...
- Patent number 10,311,900
- Issue date Jun 4, 2019
- Headway Technologies, Inc.
- Kowang Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Dual perpendicular magnetic recording (PMR) writer application with...
- Patent number 10,279,451
- Issue date May 7, 2019
- Headway Technologies, Inc.
- Yue Liu
- B24 - GRINDING POLISHING
Information Patent Grant
Dynamic flying height read/write head with off-track contact capabi...
- Patent number 9,659,584
- Issue date May 23, 2017
- Headway Technologies, Inc.
- Kowang Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic pole self-annealing with current injection in perpendicula...
- Patent number 9,218,830
- Issue date Dec 22, 2015
- Headway Technologies, Inc.
- Yan Wu
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of forming a PMR writer device with multi-level tapered writ...
- Patent number 9,105,287
- Issue date Aug 11, 2015
- Headway Technologies, Inc.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
PMR writer device with multi-level tapered write pole
- Patent number 9,025,280
- Issue date May 5, 2015
- Headway Technologies, Inc.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of manufacturing a perpendicular magnetic recording head lam...
- Patent number 8,881,376
- Issue date Nov 11, 2014
- Headway Technologies, Inc.
- Yuchen Zhou
- G11 - INFORMATION STORAGE
Information Patent Grant
Plasmon generator self-annealing with current injection in TAMR
- Patent number 8,848,495
- Issue date Sep 30, 2014
- Headway Technologies, Inc.
- Yan Wu
- G11 - INFORMATION STORAGE
Information Patent Grant
Dual-piece heat sink layer for robust reader in magnetic recording...
- Patent number 8,817,425
- Issue date Aug 26, 2014
- Headway Technologies, Inc.
- Yan Wu
- G11 - INFORMATION STORAGE
Information Patent Grant
Insertion under read shield for improved read gap actuation in dyna...
- Patent number 8,810,962
- Issue date Aug 19, 2014
- Headway Technologies, Inc.
- Yan Wu
- G11 - INFORMATION STORAGE
Information Patent Grant
PMR writer device with multi-level tapered write pole
- Patent number 8,670,212
- Issue date Mar 11, 2014
- Headway Technologies, Inc.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
TAMR structure with HDI sensor for head-disk interference and tempe...
- Patent number 8,654,618
- Issue date Feb 18, 2014
- Headway Technologies, Inc.
- Kowang Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Thermally-assisted magnetic recording head capable of reducing the...
- Patent number 8,593,915
- Issue date Nov 26, 2013
- Headway Technologies, Inc.
- Erhard Schreck
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording head laminated with AFM-FM phase c...
- Patent number 8,446,692
- Issue date May 21, 2013
- Headway Technologies, Inc.
- Yuchen Zhou
- G11 - INFORMATION STORAGE
Information Patent Grant
Composite writer shield for improving writer performance
- Patent number 8,274,758
- Issue date Sep 25, 2012
- Headway Technologies, Inc.
- Yan Wu
- G11 - INFORMATION STORAGE
Information Patent Grant
PMR writer device with multi-level tapered write pole
- Patent number 8,264,792
- Issue date Sep 11, 2012
- Headway Technologies, Inc.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
Vertically stacked DFH heater design for protrusion shape control
- Patent number 8,094,418
- Issue date Jan 10, 2012
- Headway Technologies, Inc.
- Erhard Schreck
- B82 - NANO-TECHNOLOGY
Information Patent Grant
PMR write with flux choking area
- Patent number 8,085,498
- Issue date Dec 27, 2011
- Headway Technologies, Inc.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
Ta/W film as heating device for dynamic fly height adjustment
- Patent number 8,054,583
- Issue date Nov 8, 2011
- Headway Technologies, Inc.
- Min Zheng
- G11 - INFORMATION STORAGE
Information Patent Grant
Electric field assisted magnetic recording
- Patent number 8,023,218
- Issue date Sep 20, 2011
- Headway Technologies, Inc.
- Yuchen Zhou
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Optimizing A Current Distribution In Write Heads For Efficient Ener...
- Publication number 20250078862
- Publication date Mar 6, 2025
- HEADWAY TECHNOLOGIES, INC.
- Shehrin Sayed
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular Magnetic Recording Head Equipping A Spin Torque Oscil...
- Publication number 20240363140
- Publication date Oct 31, 2024
- HEADWAY TECHNOLOGIES, INC.
- Kei Hirata
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular Magnetic Recording Head Equipping A Spin Torque Oscil...
- Publication number 20240274152
- Publication date Aug 15, 2024
- HEADWAY TECHNOLOGIES, INC.
- Kei Hirata
- G11 - INFORMATION STORAGE
Information Patent Application
LIGHT SOURCE UNIT AND THERMALLY-ASSISTED MAGNETIC HEAD
- Publication number 20210013695
- Publication date Jan 14, 2021
- SAE MAGNETICS (H. K) LTD.
- Takashi HONDA
- G11 - INFORMATION STORAGE
Information Patent Application
Heat Sink Structure for Microwave-Assisted Magnetic Recording (MAMR...
- Publication number 20200312354
- Publication date Oct 1, 2020
- HEADWAY TECHNOLOGIES, INC.
- Yan Wu
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC CORE AND COIL DESIGN FOR DOUBLE PERPENDICULAR MAGNETIC REC...
- Publication number 20190304490
- Publication date Oct 3, 2019
- HEADWAY TECHNOLOGIES, INC.
- Kowang Liu
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic Pole Self-Annealing with Current Injection in Perpendicula...
- Publication number 20150243306
- Publication date Aug 27, 2015
- HEADWAY TECHNOLOGIES, INC.
- Yan Wu
- G11 - INFORMATION STORAGE
Information Patent Application
Dual-Piece Heat Sink Layer for Robust Reader in Magnetic Recording...
- Publication number 20140268423
- Publication date Sep 18, 2014
- HEADWAY TECHNOLOGIES, INC.
- Yan Wu
- G11 - INFORMATION STORAGE
Information Patent Application
PMR Writer Device with Multi-Level Tapered Write Pole
- Publication number 20140177103
- Publication date Jun 26, 2014
- HEADWAY TECHNOLOGIES, INC.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Application
PMR Writer Device with Multi-Level Tapered Write Pole
- Publication number 20130003226
- Publication date Jan 3, 2013
- HEADWAY TECHNOLOGIES, INC.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Application
Method of Forming a PMR Writer Device with Multi-Level Tapered Writ...
- Publication number 20130001190
- Publication date Jan 3, 2013
- HEADWAY TECHNOLOGIES, INC.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording head laminated with AFM-FM phase c...
- Publication number 20120087042
- Publication date Apr 12, 2012
- HEADWAY TECHNOLOGIES, INC.
- Yuchen Zhou
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording head laminated with AFM-FM phase c...
- Publication number 20110308074
- Publication date Dec 22, 2011
- HEADWAY TECHNOLOGIES, INC.
- Yuchen Zhou
- G11 - INFORMATION STORAGE
Information Patent Application
Power control of TAMR element during read/write transition
- Publication number 20110292773
- Publication date Dec 1, 2011
- HEADWAY TECHNOLOGIES, INC.
- Erhard Schreck
- G11 - INFORMATION STORAGE
Information Patent Application
PMR write with flux choking area
- Publication number 20110063755
- Publication date Mar 17, 2011
- HEADWAY TECHNOLOGIES, INC.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Application
Insertion under read shield for improved read gap actuation in dyna...
- Publication number 20100309581
- Publication date Dec 9, 2010
- HEADWAY TECHNOLOGIES, INC.
- Yan Wu
- G11 - INFORMATION STORAGE
Information Patent Application
PMR writer device with multi-level tapered write pole
- Publication number 20100277832
- Publication date Nov 4, 2010
- HEADWAY TECHNOLOGIES, INC.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Application
Power control of TAMR element during read/write transition
- Publication number 20100232050
- Publication date Sep 16, 2010
- HEADWAY TECHNOLOGIES, INC.
- Erhard Schreck
- G11 - INFORMATION STORAGE
Information Patent Application
Electric field assisted magnetic recording
- Publication number 20100128377
- Publication date May 27, 2010
- HEADWAY TECHNOLOGIES, INC.
- Yuchen Zhou
- G11 - INFORMATION STORAGE
Information Patent Application
Ta/W film as heating device for dynamic fly height adjustment
- Publication number 20090323227
- Publication date Dec 31, 2009
- HEADWAY TECHNOLOGIES, INC.
- Min Zheng
- G11 - INFORMATION STORAGE
Information Patent Application
Composite writer shield for improving writer performance
- Publication number 20090310262
- Publication date Dec 17, 2009
- HEADWAY TECHNOLOGIES, INC.
- Yan Wu
- G11 - INFORMATION STORAGE
Information Patent Application
Vertically stacked DFH heater design for protrusion shape control
- Publication number 20090251828
- Publication date Oct 8, 2009
- HEADWAY TECHNOLOGIES, INC.
- Erhard Schreck
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head for perpendicular magnetic recording and method of ma...
- Publication number 20090141406
- Publication date Jun 4, 2009
- HEADWAY TECHNOLOGIES, INC.
- Yoshitaka Sasaki
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording head laminated with AFM-FM phase c...
- Publication number 20090052092
- Publication date Feb 26, 2009
- HEADWAY TECHNOLOGIES, INC.
- Yuchen Zhou
- G11 - INFORMATION STORAGE
Information Patent Application
Dynamic flying height design with off-track contact capability at t...
- Publication number 20080225427
- Publication date Sep 18, 2008
- HEADWAY TECHNOLOGIES, INC.
- Kowang Liu
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetostrictive actuator in a magnetic head
- Publication number 20050243473
- Publication date Nov 3, 2005
- HEADWAY TECHNOLOGIES, INC.
- David Hu
- G11 - INFORMATION STORAGE
Information Patent Application
Heat extractor for magnetic reader-writer
- Publication number 20050225897
- Publication date Oct 13, 2005
- HEADWAY TECHNOLOGIES, INC.
- Kowang Liu
- G11 - INFORMATION STORAGE
Information Patent Application
Precision dispensing apparatus and method for manufacturing thin-fi...
- Publication number 20020060862
- Publication date May 23, 2002
- Oplink Communications, Inc.
- Kowang Liu
- G02 - OPTICS

Person

Patents Grantslast 30 patents

Optimizing a current distribution in write heads for efficient ener...

Perpendicular magnetic recording head equipping a spin torque oscil...

Light source unit and thermally-assisted magnetic head

Patterned reader shields for a cooler reader

Protective shields under touchdown conditions for thermally assiste...

Heat sink structure for microwave-assisted magnetic recording (MAMR...

Bumper pad design for TAMR drives

Semiconductor laser for thermally-assisted magnetic recording head

Magnetic core and coil design for double perpendicular magnetic rec...

Dual write heater for slider surface topography control in double p...

Magnetic core and coil design for double perpendicular magnetic rec...

Dual perpendicular magnetic recording (PMR) writer application with...

Dynamic flying height read/write head with off-track contact capabi...

Magnetic pole self-annealing with current injection in perpendicula...

Method of forming a PMR writer device with multi-level tapered writ...

PMR writer device with multi-level tapered write pole

Method of manufacturing a perpendicular magnetic recording head lam...

Plasmon generator self-annealing with current injection in TAMR

Dual-piece heat sink layer for robust reader in magnetic recording...

Insertion under read shield for improved read gap actuation in dyna...

PMR writer device with multi-level tapered write pole

TAMR structure with HDI sensor for head-disk interference and tempe...

Thermally-assisted magnetic recording head capable of reducing the...

Perpendicular magnetic recording head laminated with AFM-FM phase c...

Composite writer shield for improving writer performance

PMR writer device with multi-level tapered write pole

Vertically stacked DFH heater design for protrusion shape control

PMR write with flux choking area

Ta/W film as heating device for dynamic fly height adjustment

Electric field assisted magnetic recording

Patents Applicationslast 30 patents

Optimizing A Current Distribution In Write Heads For Efficient Ener...

Perpendicular Magnetic Recording Head Equipping A Spin Torque Oscil...

Perpendicular Magnetic Recording Head Equipping A Spin Torque Oscil...

LIGHT SOURCE UNIT AND THERMALLY-ASSISTED MAGNETIC HEAD

Heat Sink Structure for Microwave-Assisted Magnetic Recording (MAMR...

MAGNETIC CORE AND COIL DESIGN FOR DOUBLE PERPENDICULAR MAGNETIC REC...

Magnetic Pole Self-Annealing with Current Injection in Perpendicula...

Dual-Piece Heat Sink Layer for Robust Reader in Magnetic Recording...

PMR Writer Device with Multi-Level Tapered Write Pole

PMR Writer Device with Multi-Level Tapered Write Pole

Method of Forming a PMR Writer Device with Multi-Level Tapered Writ...

Perpendicular magnetic recording head laminated with AFM-FM phase c...

Perpendicular magnetic recording head laminated with AFM-FM phase c...

Power control of TAMR element during read/write transition

PMR write with flux choking area

Insertion under read shield for improved read gap actuation in dyna...

PMR writer device with multi-level tapered write pole

Power control of TAMR element during read/write transition

Electric field assisted magnetic recording

Ta/W film as heating device for dynamic fly height adjustment

Composite writer shield for improving writer performance

Vertically stacked DFH heater design for protrusion shape control

Magnetic head for perpendicular magnetic recording and method of ma...

Perpendicular magnetic recording head laminated with AFM-FM phase c...

Dynamic flying height design with off-track contact capability at t...

Magnetostrictive actuator in a magnetic head

Heat extractor for magnetic reader-writer

Precision dispensing apparatus and method for manufacturing thin-fi...