Excel Precision Corporation

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Santa Clara, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Rotation and translation measurement
- Patent number 7,375,822
- Issue date May 20, 2008
- Excel Precision Corporation
- John C. Tsai
- G11 - INFORMATION STORAGE
Information Patent Grant
System for rotation measurement with laser interferometry
- Patent number 7,224,467
- Issue date May 29, 2007
- Excel Precision Corporation
- John C. Tsai
- G01 - MEASURING TESTING
Information Patent Grant
Optical alignment method and apparatus
- Patent number 7,196,798
- Issue date Mar 27, 2007
- Excel Precision Corporation
- John C. Tsai
- G01 - MEASURING TESTING
Information Patent Grant
Rotation and translation measurement
- Patent number 7,110,121
- Issue date Sep 19, 2006
- Excel Precision, Inc.
- John C. Tsai
- G11 - INFORMATION STORAGE
Information Patent Grant
Information card system
- Patent number 7,025,265
- Issue date Apr 11, 2006
- Excel Precision Corp.
- Erica Tsai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Non-contact servo track writing apparatus and method
- Patent number 6,603,629
- Issue date Aug 5, 2003
- Excel Precision, Inc.
- John C. Tsai
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus and method for inscribing, optically detecting, and using...
- Patent number 6,522,604
- Issue date Feb 18, 2003
- Excel Precision Corporation
- John C. Tsai
- G11 - INFORMATION STORAGE
Information Patent Grant
Positional measurement with normalized signal processing
- Patent number 6,317,200
- Issue date Nov 13, 2001
- Excel Precision Corp.
- Mao Wang
- G01 - MEASURING TESTING
Information Patent Grant
Rotation and translation measurement with phase sensitive detection
- Patent number 6,316,779
- Issue date Nov 13, 2001
- Excel Precision Corp.
- John C. Tsai
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus and method for inscribing, optically detecting, and using...
- Patent number 6,266,298
- Issue date Jul 24, 2001
- Excel Precision Corporation
- John C. Tsai
- G11 - INFORMATION STORAGE
Information Patent Grant
Dual laser system for extended heterodyne interferometry
- Patent number 6,052,186
- Issue date Apr 18, 2000
- Excel Precision, Inc.
- John C. Tsai
- G01 - MEASURING TESTING
Information Patent Grant
Transverse Zeeman laser
- Patent number 5,995,526
- Issue date Nov 30, 1999
- Excel Precision, Inc.
- Guang-Yao Yan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Non-contact servotrack writing with phase sensitive detection
- Patent number 5,991,112
- Issue date Nov 23, 1999
- Excel Precision
- Hubert Song
- G11 - INFORMATION STORAGE
Information Patent Grant
Environmental parameter measurement device and method for laser int...
- Patent number 5,920,392
- Issue date Jul 6, 1999
- Excel Precision, Inc.
- John C. Tsai
- G01 - MEASURING TESTING
Information Patent Grant
Servo track writing technique
- Patent number 5,774,295
- Issue date Jun 30, 1998
- Excel Precision, Inc.
- John C. Tsai
- G11 - INFORMATION STORAGE
Information Patent Grant
Ambient air refracture index measuring device
- Patent number 5,394,244
- Issue date Feb 28, 1995
- Excel Precision Inc.
- John C. Tsai
- G01 - MEASURING TESTING
Information Patent Grant
Differential interferometer
- Patent number 5,379,115
- Issue date Jan 3, 1995
- Excel Precision
- John C. Tsai
- G01 - MEASURING TESTING
Information Patent Grant
Non-contact servo track writing apparatus having read/head arm and...
- Patent number 5,315,372
- Issue date May 24, 1994
- Excel Precision, Inc.
- John C. Tsai
- G11 - INFORMATION STORAGE
Information Patent Grant
High resolution plane mirror interferometer
- Patent number 5,191,391
- Issue date Mar 2, 1993
- Excel Precision
- John C. Tsai
- G01 - MEASURING TESTING

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Patents Applicationslast 30 patents

Information Patent Application
ROTATION AND TRANSLATION MEASUREMENT
- Publication number 20060268281
- Publication date Nov 30, 2006
- Excel Precision Corporation
- John C. Tsai
- G01 - MEASURING TESTING
Information Patent Application
DIGITAL SCALE FOR LINEAR OR ROTARY STAGE
- Publication number 20060174721
- Publication date Aug 10, 2006
- Excel Precision Corporation
- John C. Tsai
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Optical alignment method and apparatus
- Publication number 20050024649
- Publication date Feb 3, 2005
- Excel Precision Corporation
- John C. Tsai
- G01 - MEASURING TESTING
Information Patent Application
DIGITAL SCALE FOR LINEAR OR ROTARY STAGE
- Publication number 20040123684
- Publication date Jul 1, 2004
- Excel Precision Corporation
- John C. Tsai
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Excel Precision Corporation

Organization

Patents Grantslast 30 patents

Rotation and translation measurement

System for rotation measurement with laser interferometry

Optical alignment method and apparatus

Rotation and translation measurement

Information card system

Non-contact servo track writing apparatus and method

Apparatus and method for inscribing, optically detecting, and using...

Positional measurement with normalized signal processing

Rotation and translation measurement with phase sensitive detection

Apparatus and method for inscribing, optically detecting, and using...

Dual laser system for extended heterodyne interferometry

Transverse Zeeman laser

Non-contact servotrack writing with phase sensitive detection

Environmental parameter measurement device and method for laser int...

Servo track writing technique

Ambient air refracture index measuring device

Differential interferometer

Non-contact servo track writing apparatus having read/head arm and...

High resolution plane mirror interferometer

Patents Applicationslast 30 patents

ROTATION AND TRANSLATION MEASUREMENT

DIGITAL SCALE FOR LINEAR OR ROTARY STAGE

Optical alignment method and apparatus

DIGITAL SCALE FOR LINEAR OR ROTARY STAGE