Yunfei Li

Person

Fremont, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method for fabricating a magnetic writer having a gradient in satur...
- Patent number 9,741,366
- Issue date Aug 22, 2017
- Western Digital (Fremont), LLC
- Jinqiu Zhang
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording write apparatus having a pole including an assis...
- Patent number 9,558,763
- Issue date Jan 31, 2017
- Western Digital (Fremont), LLC
- Peng Luo
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for providing a heat assisted magnetic recording transducer...
- Patent number 9,343,098
- Issue date May 17, 2016
- Western Digital (Fremont), LLC
- Li He
- G11 - INFORMATION STORAGE
Information Patent Grant
Inverse tapered waveguide for use in a heat assisted magnetic recor...
- Patent number 9,336,814
- Issue date May 10, 2016
- Western Digital (Fremont), LLC
- Zhong Shi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method to make interferometric taper waveguide for HAMR light delivery
- Patent number 9,183,854
- Issue date Nov 10, 2015
- Western Digital (Fremont), LLC
- Dujiang Wan
- G11 - INFORMATION STORAGE
Information Patent Grant
Heat assisted magnetic recording writer having a recessed pole
- Patent number 9,142,233
- Issue date Sep 22, 2015
- Western Digital (Fremont), LLC
- Matthew R. Gibbons
- G11 - INFORMATION STORAGE
Information Patent Grant
Touchdown sensor having a more stable crystal structure for use in...
- Patent number 9,047,902
- Issue date Jun 2, 2015
- Western Digital (Fremont), LLC
- Chengtao R. Yu
- G11 - INFORMATION STORAGE
Information Patent Grant
Damascene process using PVD sputter carbon film as CMP stop layer f...
- Patent number 9,018,100
- Issue date Apr 28, 2015
- Western Digital (Fremont), LLC
- Yanfeng Chen
- G11 - INFORMATION STORAGE
Information Patent Grant
Heat assisted magnetic recording transducers having a recessed pole
- Patent number 8,947,985
- Issue date Feb 3, 2015
- Western Digital (Fremont), LLC
- Michael V. Morelli
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for providing a perpendicular magnetic recording...
- Patent number 8,861,133
- Issue date Oct 14, 2014
- Western Digital (Fremont), LLC
- Weimin Si
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for CMP with large feature size variation
- Patent number 8,846,534
- Issue date Sep 30, 2014
- Western Digital (Fremont), LLC
- Yunfei Li
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for manufacturing tapered waveguide structures in...
- Patent number 8,790,527
- Issue date Jul 29, 2014
- Western Digital (Fremont), LLC
- Guanghong Luo
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Magnetic recording head having a dual sidewall angle
- Patent number 8,705,205
- Issue date Apr 22, 2014
- Western Digital (Fremont), LLC
- Yunfei Li
- G11 - INFORMATION STORAGE
Information Patent Grant
Systems and methods for increasing media absorption efficiency usin...
- Patent number 8,670,294
- Issue date Mar 11, 2014
- Western Digital (Fremont), LLC
- Zhong Shi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for providing an energy assisted magnetic recordi...
- Patent number 8,320,220
- Issue date Nov 27, 2012
- Western Digital (Fremont), LLC
- Hongxing Yuan
- G11 - INFORMATION STORAGE
Information Patent Grant
Abutted exchange bias design for sensor stabilization
- Patent number 7,283,337
- Issue date Oct 16, 2007
- Headway Technologies, Inc.
- Masanori Sakai
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of forming a hard bias structure in a magnetic head
- Patent number 7,275,304
- Issue date Oct 2, 2007
- Headway Technologies, Inc.
- Masanori Sakai
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
METHOD TO MAKE INTERFEROMETRIC TAPER WAVEGUIDE FOR HAMR LIGHT DELIVERY
- Publication number 20160099013
- Publication date Apr 7, 2016
- WESTERN DIGITAL (FREMONT), LLC
- DUJIANG WAN
- G11 - INFORMATION STORAGE
Information Patent Application
METHOD TO MAKE INTERFEROMETRIC TAPER WAVEGUIDE FOR HAMR LIGHT DELIVERY
- Publication number 20150243304
- Publication date Aug 27, 2015
- WESTERN DIGITAL (FREMONT), LLC
- DUJIANG WAN
- G11 - INFORMATION STORAGE
Information Patent Application
DAMASCENE PROCESS USING PVD SPUTTER CARBON FILM AS CMP STOP LAYER F...
- Publication number 20120111826
- Publication date May 10, 2012
- WESTERN DIGITAL (FREMONT), LLC
- YANFENG CHEN
- G11 - INFORMATION STORAGE
Information Patent Application
Novel abutted exchange bias design for sensor stabilization
- Publication number 20060198059
- Publication date Sep 7, 2006
- HEADWAY TECHNOLOGIES, INC.
- Masanori Sakai
- G11 - INFORMATION STORAGE
Information Patent Application
Novel abutted exchange bias design for sensor stabilization
- Publication number 20060196039
- Publication date Sep 7, 2006
- HEADWAY TECHNOLOGIES, INC.
- Masanori Sakai
- G11 - INFORMATION STORAGE

Person

Patents Grantslast 30 patents

Method for fabricating a magnetic writer having a gradient in satur...

Magnetic recording write apparatus having a pole including an assis...

Method for providing a heat assisted magnetic recording transducer...

Inverse tapered waveguide for use in a heat assisted magnetic recor...

Method to make interferometric taper waveguide for HAMR light delivery

Heat assisted magnetic recording writer having a recessed pole

Touchdown sensor having a more stable crystal structure for use in...

Damascene process using PVD sputter carbon film as CMP stop layer f...

Heat assisted magnetic recording transducers having a recessed pole

Method and system for providing a perpendicular magnetic recording...

Process for CMP with large feature size variation

Method and system for manufacturing tapered waveguide structures in...

Magnetic recording head having a dual sidewall angle

Systems and methods for increasing media absorption efficiency usin...

Method and system for providing an energy assisted magnetic recordi...

Abutted exchange bias design for sensor stabilization

Method of forming a hard bias structure in a magnetic head

Patents Applicationslast 30 patents

METHOD TO MAKE INTERFEROMETRIC TAPER WAVEGUIDE FOR HAMR LIGHT DELIVERY

METHOD TO MAKE INTERFEROMETRIC TAPER WAVEGUIDE FOR HAMR LIGHT DELIVERY

DAMASCENE PROCESS USING PVD SPUTTER CARBON FILM AS CMP STOP LAYER F...

Novel abutted exchange bias design for sensor stabilization

Novel abutted exchange bias design for sensor stabilization