Richard F. Lehman

Person

Webster, NY, US

People

Patents Grantslast 30 patents

Information Patent Grant
Digitizer with improved dynamic range and photometric resolution
- Patent number 6,914,701
- Issue date Jul 5, 2005
- Howtek Devices Corporation
- Richard Lehman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
White reference calibration in a dual digitizer
- Patent number 6,697,173
- Issue date Feb 24, 2004
- Howtek Devices Corporation
- Lee Batchelder
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digitizer with masking apparatus
- Patent number 6,687,025
- Issue date Feb 3, 2004
- Howtek Devices Corporation
- Richard Lehman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digitizing scanner
- Patent number 6,606,171
- Issue date Aug 12, 2003
- Howtek, Inc.
- Jeffrey D. Renk
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Rotary image scanner capable of mounting drums of various diameters
- Patent number 6,023,348
- Issue date Feb 8, 2000
- Howtek, Inc.
- Thomas W. Bosse
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Rotary scanner
- Patent number 5,515,182
- Issue date May 7, 1996
- Howtek, Inc.
- Richard F. Lehman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Calibrated color scanner
- Patent number 5,424,537
- Issue date Jun 13, 1995
- Howtek, Inc.
- Richard F. Lehman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for matching color prints to color images on a monitor screen
- Patent number 5,313,291
- Issue date May 17, 1994
- Xerox Corporation
- James J. Appel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Liquid crystal shutter xerographic printer with offset configuratio...
- Patent number 5,260,718
- Issue date Nov 9, 1993
- Xerox Corporation
- Heiko Rommelmann
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Calibrated color scanner with reference level adjustment
- Patent number 5,237,172
- Issue date Aug 17, 1993
- Howtek, Inc.
- Richard F. Lehman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Single pass digital printer with black, white and 2-color capability
- Patent number 5,155,541
- Issue date Oct 13, 1992
- Xerox Corporation
- Robert P. Loce
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for initial alignment of document illuminator
- Patent number 5,083,159
- Issue date Jan 21, 1992
- Xerox Corporation
- Stephen C. Corona
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Multi-function detecting device for a document reproduction machine
- Patent number 5,065,185
- Issue date Nov 12, 1991
- Edward A. Powers
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method and apparatus for sensing contamination within an optical sc...
- Patent number 4,982,233
- Issue date Jan 1, 1991
- Xerox Corporation
- Richard F. Lehman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color correction system for an electrophotographic copying machine
- Patent number 4,967,265
- Issue date Oct 30, 1990
- Xerox Corporation
- James D. Rees
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image halftoning system for printers
- Patent number 4,868,587
- Issue date Sep 19, 1989
- Xerox Corporation
- Robert P. Loce
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electrophotographic reproduction machine with document exposure sys...
- Patent number 4,794,422
- Issue date Dec 27, 1988
- Xerox Corporation
- Richard F. Lehman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Illumination system for an electrophotographic printing device
- Patent number 4,576,462
- Issue date Mar 18, 1986
- Xerox Corporation
- Richard F. Lehman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Flash illumination and optical imaging system
- Patent number 4,571,058
- Issue date Feb 18, 1986
- Xerox Corporation
- Richard F. Lehman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Document reproduction device utilizing a selective color illuminator
- Patent number 4,519,703
- Issue date May 28, 1985
- Xerox Corporation
- Richard F. Lehman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Mechanism and method for controlling the temperature and output of...
- Patent number 4,518,895
- Issue date May 21, 1985
- Xerox Corporation
- Richard F. Lehman
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Flash exposure system
- Patent number 4,334,767
- Issue date Jun 15, 1982
- Xerox Corporation
- Richard F. Lehman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Exposure compensation circuit for a copier
- Patent number 4,272,188
- Issue date Jun 9, 1981
- Xerox Corporation
- Richard F. Lehman
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Half-tone imaging system
- Patent number 4,227,795
- Issue date Oct 14, 1980
- Xerox Corporation
- Richard M. Bobbe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color corrected printing system
- Patent number 4,188,213
- Issue date Feb 12, 1980
- Xerox Corporation
- Richard F. Lehman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method of rendering objects uncopyable by photocopy processes
- Patent number 4,118,122
- Issue date Oct 3, 1978
- Xerox Corporation
- James D. Rees
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Compact illumination system for optically providing a structured ph...
- Patent number 4,082,450
- Issue date Apr 4, 1978
- Xerox Corporation
- Richard F. Lehman
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Digitizer with improved dynamic range and photometric resolution
- Publication number 20040109206
- Publication date Jun 10, 2004
- Richard Lehman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
White reference calibration in a dual digitizer
- Publication number 20030098999
- Publication date May 29, 2003
- Lee Batchelder
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digitizer with masking apparatus
- Publication number 20030098996
- Publication date May 29, 2003
- Richard Lehman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Richard F. Lehman

Person

Patents Grantslast 30 patents

Digitizer with improved dynamic range and photometric resolution

White reference calibration in a dual digitizer

Digitizer with masking apparatus

Digitizing scanner

Rotary image scanner capable of mounting drums of various diameters

Rotary scanner

Calibrated color scanner

Method for matching color prints to color images on a monitor screen

Liquid crystal shutter xerographic printer with offset configuratio...

Calibrated color scanner with reference level adjustment

Single pass digital printer with black, white and 2-color capability

Process for initial alignment of document illuminator

Multi-function detecting device for a document reproduction machine

Method and apparatus for sensing contamination within an optical sc...

Color correction system for an electrophotographic copying machine

Image halftoning system for printers

Electrophotographic reproduction machine with document exposure sys...

Illumination system for an electrophotographic printing device

Flash illumination and optical imaging system

Document reproduction device utilizing a selective color illuminator

Mechanism and method for controlling the temperature and output of...

Flash exposure system

Exposure compensation circuit for a copier

Half-tone imaging system

Color corrected printing system

Method of rendering objects uncopyable by photocopy processes

Compact illumination system for optically providing a structured ph...

Patents Applicationslast 30 patents

Digitizer with improved dynamic range and photometric resolution

White reference calibration in a dual digitizer

Digitizer with masking apparatus