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
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →