Donald A. Clarke

Person

Windsor, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Methods and apparatus for retroreflective surface inspection and di...
- Patent number 5,206,700
- Issue date Apr 27, 1993
- Diffracto, Ltd.
- Rodger Reynolds
- G01 - MEASURING TESTING
Information Patent Grant
Surface inspection using retro-reflective light field
- Patent number 5,168,322
- Issue date Dec 1, 1992
- Diffracto Ltd.
- Donald A. Clarke
- G01 - MEASURING TESTING
Information Patent Grant
Methods and apparatus for retroreflective surface inspection and di...
- Patent number 5,074,661
- Issue date Dec 24, 1991
- Diffracto Ltd.
- Rodger Reynolds
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for determining physical characteristics of ob...
- Patent number 5,004,339
- Issue date Apr 2, 1991
- Diffracto Ltd.
- Timothy R. Pryor
- G01 - MEASURING TESTING
Information Patent Grant
Panel surface flaw inspection
- Patent number 4,920,385
- Issue date Apr 24, 1990
- Diffracto Ltd.
- Donald A. Clarke
- G01 - MEASURING TESTING
Information Patent Grant
Non destructive testing and other applications using retroreflectiv...
- Patent number 4,907,888
- Issue date Mar 13, 1990
- Diffracto Ltd.
- Donald A. Clarke
- G01 - MEASURING TESTING
Information Patent Grant
Diffractosight improvements
- Patent number 4,863,268
- Issue date Sep 5, 1989
- Diffracto Ltd.
- Donald A. Clarke
- G01 - MEASURING TESTING
Information Patent Grant
Surface reflectivity detector with oil mist reflectivity enhancement
- Patent number 4,686,374
- Issue date Aug 11, 1987
- Diffracto Ltd.
- Nicholas Liptay-Wagner
- G01 - MEASURING TESTING
Information Patent Grant
Panel surface flaw inspection
- Patent number 4,629,319
- Issue date Dec 16, 1986
- Diffracto Ltd.
- Donald A. Clarke
- G01 - MEASURING TESTING
Information Patent Grant
Photodetector array based optical measurement systems
- Patent number 4,585,947
- Issue date Apr 29, 1986
- Diffracto, Ltd.
- Nicholas Liptay-Wagner
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for determining physical characteristics of ob...
- Patent number 4,506,980
- Issue date Mar 26, 1985
- Diffracto Ltd.
- Timothy R. Pryor
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for determining physical characteristics of ob...
- Patent number 4,493,554
- Issue date Jan 15, 1985
- Diffracto
- Timothy R. Pryor
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for determining dimensional information concer...
- Patent number 4,465,374
- Issue date Aug 14, 1984
- Diffracto Ltd.
- Timothy R. Pryor
- G01 - MEASURING TESTING
Information Patent Grant
New photodetector array based optical measurement systems
- Patent number 4,394,683
- Issue date Jul 19, 1983
- Diffracto Ltd.
- Nicholas Liptay-Wagner
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Method and apparatus for determining physical characteristics of ob...
- Patent number 4,326,808
- Issue date Apr 27, 1982
- Diffracto Ltd.
- Timothy R. Pryor
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for determining physical characteristics of ob...
- Patent number 4,305,661
- Issue date Dec 15, 1981
- Diffracto, Ltd.
- Timothy R. Pryor
- G01 - MEASURING TESTING

Donald A. Clarke

Person

Patents Grantslast 30 patents

Methods and apparatus for retroreflective surface inspection and di...

Surface inspection using retro-reflective light field

Methods and apparatus for retroreflective surface inspection and di...

Method and apparatus for determining physical characteristics of ob...

Panel surface flaw inspection

Non destructive testing and other applications using retroreflectiv...

Diffractosight improvements

Surface reflectivity detector with oil mist reflectivity enhancement

Panel surface flaw inspection

Photodetector array based optical measurement systems

Method and apparatus for determining physical characteristics of ob...

Method and apparatus for determining physical characteristics of ob...

Method and apparatus for determining dimensional information concer...

New photodetector array based optical measurement systems

Method and apparatus for determining physical characteristics of ob...

Method and apparatus for determining physical characteristics of ob...