Chengwu Cui

Person

Lexington, KY, US

People

Patents Grantslast 30 patents

Information Patent Grant
Reduced height illumination assembly for a scanner
- Patent number 8,833,967
- Issue date Sep 16, 2014
- Lexmark International, Inc.
- Chengwu Cui
- F21 - LIGHTING
Information Patent Grant
Illumination assembly for a scanner with thermally conductive heat...
- Patent number 8,610,969
- Issue date Dec 17, 2013
- Lexmark International, Inc.
- Eugene David Allen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical system for a scanner including a light source for illuminat...
- Patent number 8,610,972
- Issue date Dec 17, 2013
- Lexmark International, Inc.
- Eugene David Allen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Illumination assembly for a scanner
- Patent number 8,485,675
- Issue date Jul 16, 2013
- Lexmark International, Inc.
- Eugene David Allen
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Scanner and system employing composite illumination
- Patent number 8,432,584
- Issue date Apr 30, 2013
- Lexmark International, Inc.
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for dissipating heat produced in scan head assembly of imagi...
- Patent number 8,422,096
- Issue date Apr 16, 2013
- Lexmark International, Inc.
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raisable scan head for an imaging apparatus
- Patent number 8,405,889
- Issue date Mar 26, 2013
- Lexmark International, Inc.
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mounting bracket for image sensing unit of a scanner
- Patent number 8,400,688
- Issue date Mar 19, 2013
- Lexmark International, Inc.
- Eugene David Allen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Linear light diffusing structure for document scanners
- Patent number 8,322,872
- Issue date Dec 4, 2012
- Lexmark International, Inc.
- Chengwu Cui
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image scanning apparatus and methods
- Patent number 8,228,571
- Issue date Jul 24, 2012
- Lexmark International, Inc.
- James Thomas Beegle
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for scanner skew adjustment in an image formin...
- Patent number 8,159,732
- Issue date Apr 17, 2012
- Lexmark International, Inc.
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Detachable transparent plate for scan head assembly
- Patent number 8,089,663
- Issue date Jan 3, 2012
- Lexmark International, Inc.
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Enhanced illuminated scanning unit reference marker
- Patent number 8,081,353
- Issue date Dec 20, 2011
- Lexmark International, Inc.
- Charles B. Langrel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Methods of moving a media sheet in a scanning device
- Patent number 7,913,992
- Issue date Mar 29, 2011
- Lexmark International, Inc.
- Charles Brandon Langrel
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Estimating light output of a lamp in a scanner
- Patent number 7,911,654
- Issue date Mar 22, 2011
- Lexmark International, Inc.
- Chengwu Cui
- G01 - MEASURING TESTING
Information Patent Grant
Method for adjusting a controller of a scanner
- Patent number 7,817,315
- Issue date Oct 19, 2010
- Lexmark International, Inc.
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Methods for identifying marks using a digital master document and s...
- Patent number 7,791,756
- Issue date Sep 7, 2010
- Lexmark International, Inc.
- Chengwu Cui
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and device for converting scanned text to audio data via con...
- Patent number 7,675,641
- Issue date Mar 9, 2010
- Lexmark International, Inc.
- Chengwu Cui
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Contaminant particle identification and compensation with multichan...
- Patent number 7,423,789
- Issue date Sep 9, 2008
- Lexmark International, Inc.
- Jesse R. Borders
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and methods for multiple imaging element scanning and copying
- Patent number 7,388,693
- Issue date Jun 17, 2008
- Lexmark International, Inc.
- Mohamed N. Ahmed
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Gamut mapping algorithm for business graphics
- Patent number 6,956,581
- Issue date Oct 18, 2005
- Lexmark International, Inc.
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Shingle masks that reduce banding effect on ink jet printers
- Patent number 6,764,162
- Issue date Jul 20, 2004
- Lexmark International, Inc.
- Mary Ellen Biddle
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Reduced Height Illumination Assembly for a Scanner
- Publication number 20130271975
- Publication date Oct 17, 2013
- Chengwu Cui
- F21 - LIGHTING
Information Patent Application
Optical System for a Scanner
- Publication number 20130070317
- Publication date Mar 21, 2013
- Lexmark International, Inc.
- Eugene David Allen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Illumination Assembly for a Scanner
- Publication number 20120162738
- Publication date Jun 28, 2012
- Eugene David Allen
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Optical System for Scanners
- Publication number 20120162725
- Publication date Jun 28, 2012
- Eugene David Allen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Illumination Assembly for a Scanner
- Publication number 20120162726
- Publication date Jun 28, 2012
- Eugene David Allen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Mounting Bracket for Image Sensing Unit of a Scanner
- Publication number 20120162722
- Publication date Jun 28, 2012
- Eugene David Allen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Raisable Scan Head for an Imaging Apparatus
- Publication number 20110292473
- Publication date Dec 1, 2011
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Linear Light Diffusing Structure for Document Scanners
- Publication number 20110044036
- Publication date Feb 24, 2011
- Chengwu Cui
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image Scanning Apparatus and Methods
- Publication number 20100142008
- Publication date Jun 10, 2010
- James Thomas Beegle
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR DISSIPATING HEAT PRODUCED IN SCAN HEAD ASSEMBLY OF IMAGI...
- Publication number 20100142010
- Publication date Jun 10, 2010
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Apparatus and Method for Scanner Skew Adjustment in an Image Formin...
- Publication number 20100110509
- Publication date May 6, 2010
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Scanhead For Image Illumination Uniformity And Method Thereof
- Publication number 20090279178
- Publication date Nov 12, 2009
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL IMAGING WITH OPTIMIZED ILLUMINATION EFFICIENCY AND UNIFORMITY
- Publication number 20090180160
- Publication date Jul 16, 2009
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and method of simplex and duplex scanning
- Publication number 20090168125
- Publication date Jul 2, 2009
- Lexmark International, Inc.
- Stephen Wilson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and System For Calibrating A Scanner Having A Scan Bar Inclu...
- Publication number 20090168116
- Publication date Jul 2, 2009
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Scanner and System Employing Composite Illumination
- Publication number 20090168122
- Publication date Jul 2, 2009
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Methods of Moving A Media Sheet In A Scanning Device
- Publication number 20090160122
- Publication date Jun 25, 2009
- Charles Brandon Langrel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DETACHABLE TRANSPARENT PLATE FOR SCAN HEAD ASSEMBLY
- Publication number 20090153920
- Publication date Jun 18, 2009
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for Adjusting a Controller of a Scanner
- Publication number 20090153698
- Publication date Jun 18, 2009
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Scanner Calibration Strip, Scanner, and Method for Segmenting a Sca...
- Publication number 20090153912
- Publication date Jun 18, 2009
- Mohamed Nooman Ahmed
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ENHANCED ILLUMINATED SCANNING UNIT REFERENCE MARKER
- Publication number 20090153919
- Publication date Jun 18, 2009
- Charles B. Langrel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Scanning System for Generating an Image
- Publication number 20080285096
- Publication date Nov 20, 2008
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and Method for Saving and Retrieving Job Settings by Printin...
- Publication number 20080273222
- Publication date Nov 6, 2008
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for compensating two-dimensional images for il...
- Publication number 20070159655
- Publication date Jul 12, 2007
- Lexmark International, Inc.
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Scanning apparatus and methods
- Publication number 20070046930
- Publication date Mar 1, 2007
- Lexmark International, Inc.
- Chengwu Cui
- G01 - MEASURING TESTING
Information Patent Application
Contaminant particle identification and compensation with multichan...
- Publication number 20070047016
- Publication date Mar 1, 2007
- Lexmark International, Inc.
- Jesse R. Borders
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and system for combining images
- Publication number 20060256397
- Publication date Nov 16, 2006
- Lexmark International, Inc.
- Chengwu Cui
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Methods for identifying marks using a digital master document and s...
- Publication number 20060250660
- Publication date Nov 9, 2006
- Lexmark International, Inc.
- Chengwu Cui
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Methods for automatically identifying user selected answers on a te...
- Publication number 20060252023
- Publication date Nov 9, 2006
- Lexmark International, Inc.
- Chengwu Cui
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
Methods for providing encoded visual borders on a scannable document
- Publication number 20060119898
- Publication date Jun 8, 2006
- Lexmark International, Inc.
- Chengwu Cui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Chengwu Cui

Person

Patents Grantslast 30 patents

Reduced height illumination assembly for a scanner

Illumination assembly for a scanner with thermally conductive heat...

Optical system for a scanner including a light source for illuminat...

Illumination assembly for a scanner

Scanner and system employing composite illumination

Method for dissipating heat produced in scan head assembly of imagi...

Raisable scan head for an imaging apparatus

Mounting bracket for image sensing unit of a scanner

Linear light diffusing structure for document scanners

Image scanning apparatus and methods

Apparatus and method for scanner skew adjustment in an image formin...

Detachable transparent plate for scan head assembly

Enhanced illuminated scanning unit reference marker

Methods of moving a media sheet in a scanning device

Estimating light output of a lamp in a scanner

Method for adjusting a controller of a scanner

Methods for identifying marks using a digital master document and s...

Method and device for converting scanned text to audio data via con...

Contaminant particle identification and compensation with multichan...

System and methods for multiple imaging element scanning and copying

Gamut mapping algorithm for business graphics

Shingle masks that reduce banding effect on ink jet printers

Patents Applicationslast 30 patents

Reduced Height Illumination Assembly for a Scanner

Optical System for a Scanner

Illumination Assembly for a Scanner

Optical System for Scanners

Illumination Assembly for a Scanner

Mounting Bracket for Image Sensing Unit of a Scanner

Raisable Scan Head for an Imaging Apparatus

Linear Light Diffusing Structure for Document Scanners

Image Scanning Apparatus and Methods

METHOD FOR DISSIPATING HEAT PRODUCED IN SCAN HEAD ASSEMBLY OF IMAGI...

Apparatus and Method for Scanner Skew Adjustment in an Image Formin...

Scanhead For Image Illumination Uniformity And Method Thereof

OPTICAL IMAGING WITH OPTIMIZED ILLUMINATION EFFICIENCY AND UNIFORMITY

System and method of simplex and duplex scanning

Method and System For Calibrating A Scanner Having A Scan Bar Inclu...

Scanner and System Employing Composite Illumination

Methods of Moving A Media Sheet In A Scanning Device

DETACHABLE TRANSPARENT PLATE FOR SCAN HEAD ASSEMBLY

Method for Adjusting a Controller of a Scanner

Scanner Calibration Strip, Scanner, and Method for Segmenting a Sca...

ENHANCED ILLUMINATED SCANNING UNIT REFERENCE MARKER

Scanning System for Generating an Image

System and Method for Saving and Retrieving Job Settings by Printin...

Method and apparatus for compensating two-dimensional images for il...

Scanning apparatus and methods

Contaminant particle identification and compensation with multichan...

Method and system for combining images

Methods for identifying marks using a digital master document and s...

Methods for automatically identifying user selected answers on a te...

Methods for providing encoded visual borders on a scannable document