Ralph H. Bradley Jr.

Person

Knoxville, TN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Color projection display system with improved hue variation
- Patent number 6,191,893
- Issue date Feb 20, 2001
- Philips Electronics North America Corporation
- Ralph Bradley
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dichroic filters with low nm per degree sensitivity
- Patent number 5,999,321
- Issue date Dec 7, 1999
- Philips Electronics North America Corporation
- Ralph Bradley
- G02 - OPTICS
Information Patent Grant
Mutli-color-band light source
- Patent number 5,892,623
- Issue date Apr 6, 1999
- Philips Electronics North America
- Ralph Hampton Bradley
- G02 - OPTICS
Information Patent Grant
Multi-color-band scrolling across single-panel light valve
- Patent number 5,845,981
- Issue date Dec 8, 1998
- Philips Electronics North America Corporation
- Ralph Hampton Bradley
- G02 - OPTICS
Information Patent Grant
Single panel color projection video display
- Patent number 5,608,467
- Issue date Mar 4, 1997
- Philips Electronics North America Corporation
- Peter J. Janssen
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Single panel color projection video display
- Patent number 5,532,763
- Issue date Jul 2, 1996
- North American Philips Corporation
- Peter J. Janssen
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Short focal length video color projector employing dichroic mirror...
- Patent number 5,168,351
- Issue date Dec 1, 1992
- North American Philips Corporation
- Ralph H. Bradley
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Illumination system for LCD projection television
- Patent number 5,084,807
- Issue date Jan 28, 1992
- U.S. Philips Corporation
- Thomas S. McKechnie
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Rear projection screen
- Patent number 5,076,661
- Issue date Dec 31, 1991
- North American Philips Corp.
- Ralph H. Bradley
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Lenticular arrays for front projection screens and contrast improvi...
- Patent number 4,964,695
- Issue date Oct 23, 1990
- North American Philips Corporation
- Ralph H. Bradley
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Dual aspect ratio display with cyclicly moving raster area to preve...
- Patent number 4,928,182
- Issue date May 22, 1990
- North American Philips Corporation
- William F. Guerinot
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Display system with equal path lengths
- Patent number 4,864,390
- Issue date Sep 5, 1989
- North American Philips Corporation
- Thomas S. McKechnie
- G02 - OPTICS
Information Patent Grant
One-piece projection screen
- Patent number 4,773,731
- Issue date Sep 27, 1988
- North American Philips Corp.
- Jill F. Goldenberg
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Front projection screen with rear light concentrating lens array
- Patent number 4,767,186
- Issue date Aug 30, 1988
- North American Philips Consumer Electronics Corp.
- Ralph H. Bradley
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Rear projection screen with improved luminance uniformity
- Patent number 4,701,020
- Issue date Oct 20, 1987
- North American Philips Consumer Electronics Corp.
- Ralph H. Bradley
- G02 - OPTICS
Information Patent Grant
Color picture projection system with a wavelength-selective reflect...
- Patent number 4,679,069
- Issue date Jul 7, 1987
- NAP Consumer Electronics Corp.
- Johan Andrea
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Rear projection screen
- Patent number 4,573,764
- Issue date Mar 4, 1986
- North American Philips Consumer Electronics Corp.
- Ralph H. Bradley
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Ralph H. Bradley Jr.

Person

Patents Grantslast 30 patents

Color projection display system with improved hue variation

Dichroic filters with low nm per degree sensitivity

Mutli-color-band light source

Multi-color-band scrolling across single-panel light valve

Single panel color projection video display

Single panel color projection video display

Short focal length video color projector employing dichroic mirror...

Illumination system for LCD projection television

Rear projection screen

Lenticular arrays for front projection screens and contrast improvi...

Dual aspect ratio display with cyclicly moving raster area to preve...

Display system with equal path lengths

One-piece projection screen

Front projection screen with rear light concentrating lens array

Rear projection screen with improved luminance uniformity

Color picture projection system with a wavelength-selective reflect...

Rear projection screen