Jeiwei Chang

Person

Cupertino, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method of using xenon ion beams to improve track width definition
- Patent number 8,256,096
- Issue date Sep 4, 2012
- Headway Technologies, Inc.
- Stuart Kao
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Process to manufacture magnetic tunnel junction read head
- Patent number 8,087,157
- Issue date Jan 3, 2012
- Headway Technologies, Inc.
- Stuart Kao
- B82 - NANO-TECHNOLOGY
Information Patent Grant
CPP head with parasitic shunting reduction
- Patent number 7,864,490
- Issue date Jan 4, 2011
- Headway Technologies, Inc.
- Jeiwei Chang
- G11 - INFORMATION STORAGE
Information Patent Grant
Process to manufacture CPP GMR read head
- Patent number 7,810,227
- Issue date Oct 12, 2010
- Headway Technologies, Inc.
- Stuart Kao
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Thin laminated single pole perpendicular write head
- Patent number 7,420,780
- Issue date Sep 2, 2008
- Headay Technologies, Inc.
- Kochan Ju
- G11 - INFORMATION STORAGE
Information Patent Grant
CPP head with parasitic shunting reduction
- Patent number 7,279,269
- Issue date Oct 9, 2007
- Headway Technologies, Inc.
- Jeiwei Chang
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin laminated single pole perpendicular write head
- Patent number 7,064,924
- Issue date Jun 20, 2006
- Headway Technologies, Inc.
- Kochan Ju
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of increasing CPP GMR in a spin valve structure
- Patent number 7,016,168
- Issue date Mar 21, 2006
- Headway Technologies, Inc.
- Min Li
- G11 - INFORMATION STORAGE
Information Patent Grant
Process to form narrow write track for magnetic recording
- Patent number 6,821,717
- Issue date Nov 23, 2004
- Headway Technologies, Inc.
- Charles C. Lin
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Process to form NOL structure for CPP GMR
- Patent number 6,759,084
- Issue date Jul 6, 2004
- Headway Technologies, Inc.
- Kochan Ju
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
CPP head with parasitic shunting reduction
- Publication number 20080050615
- Publication date Feb 28, 2008
- HEADWAY TECHNOLOGIES, INC.
- Jeiwei Chang
- G11 - INFORMATION STORAGE
Information Patent Application
Process to manufacture CPP GMR read head
- Publication number 20080040914
- Publication date Feb 21, 2008
- Headway Technologies, Inc.&TDK Corporation
- Stuart Kao
- G01 - MEASURING TESTING
Information Patent Application
Xenon ion beam to improve track width definition
- Publication number 20080040915
- Publication date Feb 21, 2008
- HEADWAY TECHNOLOGIES, INC.
- Stuart Kao
- G01 - MEASURING TESTING
Information Patent Application
Process to manufacture magnetic tunnel junction read head
- Publication number 20080034576
- Publication date Feb 14, 2008
- Headway Technologies, Inc.&TDK Corporation
- Stuart Kao
- G01 - MEASURING TESTING
Information Patent Application
Thin laminated single pole perpendicular write head
- Publication number 20060203382
- Publication date Sep 14, 2006
- HEADWAY TECHNOLOGIES, INC.
- Kochan Ju
- G11 - INFORMATION STORAGE
Information Patent Application
Xenon ion beam to improve track width definition
- Publication number 20050231856
- Publication date Oct 20, 2005
- HEADWAY TECHNOLOGIES, INC.
- Stuart Kao
- G01 - MEASURING TESTING
Information Patent Application
CPP head with parasitic shunting reduction
- Publication number 20050130070
- Publication date Jun 16, 2005
- HEADWAY TECHNOLOGIES, INC.
- Jeiwei Chang
- G11 - INFORMATION STORAGE
Information Patent Application
Method of increasing CPP GMR in a spin valve structure
- Publication number 20050111148
- Publication date May 26, 2005
- HEADWAY TECHNOLOGIES, INC.
- Min Li
- G11 - INFORMATION STORAGE
Information Patent Application
Thin laminated single pole perpendicular write head
- Publication number 20040264047
- Publication date Dec 30, 2004
- HEADWAY TECHNOLOGIES, INC.
- Kochan Ju
- G11 - INFORMATION STORAGE
Information Patent Application
Process to form narrow write track for magnetic recording
- Publication number 20040020778
- Publication date Feb 5, 2004
- HEADWAY TECHNOLOGIES, INC.
- Charles C. Lin
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR

Jeiwei Chang

Person

Patents Grantslast 30 patents

Method of using xenon ion beams to improve track width definition

Process to manufacture magnetic tunnel junction read head

CPP head with parasitic shunting reduction

Process to manufacture CPP GMR read head

Thin laminated single pole perpendicular write head

CPP head with parasitic shunting reduction

Thin laminated single pole perpendicular write head

Method of increasing CPP GMR in a spin valve structure

Process to form narrow write track for magnetic recording

Process to form NOL structure for CPP GMR

Patents Applicationslast 30 patents

CPP head with parasitic shunting reduction

Process to manufacture CPP GMR read head

Xenon ion beam to improve track width definition

Process to manufacture magnetic tunnel junction read head

Thin laminated single pole perpendicular write head

Xenon ion beam to improve track width definition

CPP head with parasitic shunting reduction

Method of increasing CPP GMR in a spin valve structure

Thin laminated single pole perpendicular write head

Process to form narrow write track for magnetic recording