Assignee
LEVIEN RAPHAEL L
US·14 granted patents·414 citations·filing 1982–2014
Top patents by PatentIndex Score
14 records- 0192US5218386AEyeglasses with spectral color shiftLEVIEN RAPHAEL L·Filed 1991·Granted Jun 8, 1993·138 cites·9 claims
- 0283US4523271ASoftware protection method and apparatusLEVIEN RAPHAEL L·Filed 1982·Granted Jun 11, 1985·62 cites·14 claims
- 0376US8810579B2Method and apparatus for interactive curve generationLEVIEN RAPHAEL L·Filed 2013·Granted Aug 19, 2014·3 cites·20 claims
- 0476US5055942APhotographic image reproduction device using digital halftoning to screen images allowing adjustable coarsenessLEVIEN RAPHAEL L·Filed 1990·Granted Oct 8, 1991·36 cites·26 claims
- 0573US9230350B2Method and apparatus for interactive curve generationLEVIEN RAPHAEL L·Filed 2014·Granted Jan 5, 2016·2 cites·20 claims
- 0671US5337264ATime reversal gaussian approximation filterLEVIEN RAPHAEL L·Filed 1992·Granted Aug 9, 1994·31 cites·25 claims
- 0771US5276535AMethod and apparatus for halftoning of images using grayscale error diffusionLEVIEN RAPHAEL L·Filed 1991·Granted Jan 4, 1994·31 cites·24 claims
- 0870US5155588AColor correction and apparatus for photographic reproductionLEVIEN RAPHAEL L·Filed 1990·Granted Oct 13, 1992·32 cites·29 claims
- 0964US5315406AScreen generation for halftone screening of images using arbitrary distribution of transformed screen coordinatesLEVIEN RAPHAEL L·Filed 1991·Granted May 24, 1994·23 cites·44 claims
- 1058US5331429ADigital generation of halftone images with error diffusion and frequency matched periodic screen rulingsLEVIEN RAPHAEL L·Filed 1992·Granted Jul 19, 1994·17 cites·34 claims
- 1158US5291310AScreen generation for halftone screening of imagesLEVIEN RAPHAEL L·Filed 1991·Granted Mar 1, 1994·17 cites·32 claims
- 1257US8520003B2Method and apparatus for interactive curve generationLEVIEN RAPHAEL L·Filed 2007·Granted Aug 27, 2013·1 cites·20 claims
- 1351US5307181AScreen generation for halftone screening of images using scan line segments of oversized screen scan linesLEVIEN RAPHAEL L·Filed 1991·Granted Apr 26, 1994·12 cites·26 claims
- 1445US5365602AIntegrated half-tone screening and enlarging using an enlargement mapping pattern having linked, unique pattern segmentsLEVIEN RAPHAEL L·Filed 1993·Granted Nov 15, 1994·9 cites·30 claims
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