Inventor · disambiguated record
Donald A. Clarke
Also filed as: CLARKE DONALD A
16 granted patents·878 citations·filing 1979–1991
96Inventor score
Top patents by PatentIndex Score
16 records- 0197US4629319APanel surface flaw inspectionDIFFRACTO LTD·Filed 1984·Granted Dec 16, 1986·221 cites·58 claims
- 0296US4920385APanel surface flaw inspectionDIFFRACTO LTD·Filed 1989·Granted Apr 24, 1990·164 cites·39 claims
- 0394US4686374ASurface reflectivity detector with oil mist reflectivity enhancementDIFFRACTO LTD·Filed 1985·Granted Aug 11, 1987·92 cites·28 claims
- 0491US4863268ADiffractosight improvementsDIFFRACTO LTD·Filed 1987·Granted Sep 5, 1989·77 cites·81 claims
- 0590US4394683ANew photodetector array based optical measurement systemsDIFFRACTO LTD·Filed 1980·Granted Jul 19, 1983·55 cites·55 claims
- 0690US4305661AMethod and apparatus for determining physical characteristics of objects and object surfacesDIFFRACTO LTD·Filed 1979·Granted Dec 15, 1981·43 cites·56 claims
- 0782US5004339AMethod and apparatus for determining physical characteristics of objects and object surfacesDIFFRACTO LTD·Filed 1986·Granted Apr 2, 1991·47 cites·5 claims
- 0880US4585947APhotodetector array based optical measurement systemsDIFFRACTO LTD·Filed 1983·Granted Apr 29, 1986·29 cites·37 claims
- 0974US4465374AMethod and apparatus for determining dimensional information concerning an objectDIFFRACTO LTD·Filed 1982·Granted Aug 14, 1984·27 cites·15 claims
- 1069US5168322ASurface inspection using retro-reflective light fieldDIFFRACTO LTD·Filed 1991·Granted Dec 1, 1992·31 cites·14 claims
- 1168US4326808AMethod and apparatus for determining physical characteristics of object outer surfacesDIFFRACTO LTD·Filed 1979·Granted Apr 27, 1982·19 cites·34 claims
- 1267US4493554AMethod and apparatus for determining physical characteristics of objects and object surfacesDIFFRACTO·Filed 1981·Granted Jan 15, 1985·24 cites·28 claims
- 1358US4907888ANon destructive testing and other applications using retroreflective illuminationDIFFRACTO LTD·Filed 1987·Granted Mar 13, 1990·15 cites·3 claims
- 1449US5206700AMethods and apparatus for retroreflective surface inspection and distortion measurementDIFFRACTO LTD·Filed 1991·Granted Apr 27, 1993·14 cites·12 claims
- 1548US4506980AMethod and apparatus for determining physical characteristics of objects and object surfacesDIFFRACTO LTD·Filed 1981·Granted Mar 26, 1985·9 cites·3 claims
- 1646US5074661AMethods and apparatus for retroreflective surface inspection and distortion measurementDIFFRACTO LTD·Filed 1988·Granted Dec 24, 1991·11 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →