Wai Cheung Leung

Person

San Jose, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Surface inspection tool
- Patent number 6,704,435
- Issue date Mar 9, 2004
- International Business Machines Corporation
- Wayne Isami Imaino
- G01 - MEASURING TESTING
Information Patent Grant
Surface inspection tool
- Patent number 6,624,884
- Issue date Sep 23, 2003
- International Business Machines Corporation
- Wayne Isami Imaino
- G01 - MEASURING TESTING
Information Patent Grant
Surface inspection tool using a parabolic mirror
- Patent number 6,614,519
- Issue date Sep 2, 2003
- International Business Machines Corporation
- Milton Russell Latta
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic recording transducer with electronic shield
- Patent number 6,477,008
- Issue date Nov 5, 2002
- International Business Machines Corporation
- Thomas Young Chang
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic read/write head having electromagnetic field cancellation...
- Patent number 6,407,891
- Issue date Jun 18, 2002
- International Business Machines Corporation
- Thomas Young Chang
- G11 - INFORMATION STORAGE
Information Patent Grant
Hard disk burnishing head
- Patent number 6,357,095
- Issue date Mar 19, 2002
- International Business Machines Corporation
- Shanlin Duan
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic tester for disk surface scan
- Patent number 6,330,122
- Issue date Dec 11, 2001
- International Business Machines Corporation
- Thomas Young Chang
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for precise measurement of pressure dependence...
- Patent number 6,314,814
- Issue date Nov 13, 2001
- International Business Machines Corporation
- James Hammond Brannon
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of producing a calibration disk
- Patent number 6,117,620
- Issue date Sep 12, 2000
- International Business Machines Corporation
- Wayne Isami Imaino
- G11 - INFORMATION STORAGE
Information Patent Grant
Surface inspection tool
- Patent number 6,100,971
- Issue date Aug 8, 2000
- International Business Machines Corporation
- Wayne Isami Imaino
- G01 - MEASURING TESTING
Information Patent Grant
Thin film disk media using optimum surface orientation to written d...
- Patent number 6,081,411
- Issue date Jun 27, 2000
- International Business Machines Corporation
- Paul M. Green
- G11 - INFORMATION STORAGE
Information Patent Grant
Surface inspection tool
- Patent number 5,969,370
- Issue date Oct 19, 1999
- International Business Machines Corporation
- Wayne Isami Imaino
- G11 - INFORMATION STORAGE
Information Patent Grant
Glass substrate inspection tool having a telecentric lens assembly
- Patent number 5,945,685
- Issue date Aug 31, 1999
- International Business Machines Corporation
- Wayne Isami Imaino
- G01 - MEASURING TESTING
Information Patent Grant
Surface inspection tool
- Patent number 5,933,230
- Issue date Aug 3, 1999
- International Business Machines Corporation
- Wayne Isami Imaino
- G01 - MEASURING TESTING
Information Patent Grant
Surface inspection tool
- Patent number 5,917,589
- Issue date Jun 29, 1999
- International Business Machines Corporation
- Wayne Isami Imaino
- G01 - MEASURING TESTING
Information Patent Grant
Surface inspection tool
- Patent number 5,867,261
- Issue date Feb 2, 1999
- International Business Machines Corporation
- Wayne Isami Imaino
- G01 - MEASURING TESTING
Information Patent Grant
Surface inspection tool
- Patent number 5,847,823
- Issue date Dec 8, 1998
- International Business Machines Corporation
- Wayne Isami Imaino
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording media
- Patent number 5,079,086
- Issue date Jan 7, 1992
- International Business Machines Corp.
- John M. Burns
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for optically measuring characteristics of a t...
- Patent number 4,873,430
- Issue date Oct 10, 1989
- International Business Machines Corporation
- Anthony Juliana
- G01 - MEASURING TESTING

Wai Cheung Leung

Person

Patents Grantslast 30 patents

Surface inspection tool

Surface inspection tool

Surface inspection tool using a parabolic mirror

Magnetic recording transducer with electronic shield

Magnetic read/write head having electromagnetic field cancellation...

Hard disk burnishing head

Magnetic tester for disk surface scan

Method and apparatus for precise measurement of pressure dependence...

Method of producing a calibration disk

Surface inspection tool

Thin film disk media using optimum surface orientation to written d...

Surface inspection tool

Glass substrate inspection tool having a telecentric lens assembly

Surface inspection tool

Surface inspection tool

Surface inspection tool

Surface inspection tool

Magnetic recording media

Method and apparatus for optically measuring characteristics of a t...