Inventor
Leon C. Williams
Inventor
Walworth, NY, US
Overview
Patents· 56 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television50%
G06TImage data processing or generation, in general15%
G06FElectric digital data processing8%
G06KGraphical data reading5%
G06VImage or video recognition or understanding5%
G03GElectrography4%
G09GArrangements or circuits for control of indicating devices using static means to present variable information4%
B41JTypewriters3%
B41MPrinting, duplicating, marking, or copying processes1%
B44CProducing decorative effects1%
PatentTitleYear
11,022,906Method and apparatus for variable gloss reduction202110,447,896Interactive three-dimensional (3D) color histograms201910,114,307Method and apparatus for variable gloss reduction20189,971,551Previsualization for large format print jobs20189,952,539Method and apparatus for variable gloss reduction20189,914,309'Method and apparatus for single-pass failed nozzle compensation'20189,891,867'Protocol for interaction between wireless devices and other devices'20189,786,094'Method and apparatus for creating a dimensional layer for an image file'20179,227,428'Simulated embossing and imprinting'20169,049,403'Method and apparatus for high quality printing of non-saturated colored text and lines'20158,922,818'Mobile print email reply with thumbnails'20148,885,181'Virtual press run'20148,553,286'Halftoning method and apparatus using templates indexed by code'20137,058,350'Copier or scanner platen cover with fluorescent coating'20066,683,702'Compact-dot reproduction of scanned halftone screens'20046,678,414'Loose-gray-scale template matching'20046,647,144'Detection and verification of scanning attributes'20036,608,701'Compact high addressability rendering'20036,594,401'Detection and elimination of scanning artifacts'20036,449,396'Compact rendering for processing binary high addressability images'20026,427,030'Method and system for image conversion utilizing dynamic error diffusion'20026,411,735'Method and apparatus for distinguishing between noisy continuous tone document types and other document types to maintain reliable image segmentation'20026,347,159'Method and system for processing image information using screening and error diffusion'20026,304,679'Method and apparatus for implementing two-dimensional digital filters'20016,252,680'Image input device and method for providing scanning artifact detection'20016,246,781'Image input device and method for providing scanning artifact detection'20016,229,923'Method and system for classifying and processing of pixels of image data'20016,181,829'Method and system for classifying and processing of pixels of image data'20016,175,427'System and method of tonal correction of independent regions on a compound document'20016,144,775'Method and system for storing error values for an image conversion process utilizing dynamic error diffusion'20006,125,406'Bi-directional packing data device enabling forward/reverse bit sequences with two output latches'20006,122,393'Image input device and method for providing scanning artifact detection'20005,959,290'Image input device and method for providing scanning artifact detection'19995,880,857'Error diffusion pattern shifting reduction through programmable threshold perturbation'19995,809,177'Hybrid error diffusion pattern shifting reduction using programmable threshold perturbation'19985,790,211'Platen cover for a digital document scanner with electrically switchable reflectance modes'19985,787,206'Method and system for processing image information using expanded dynamic screening and error diffusion'19985,778,156'Method and system for implementing fuzzy image processing of image data'19985,729,663'Method and apparatus for gray screening'19985,696,601'System and method for redistributing error values from an error diffusion process'19975,642,202'Scan image target locator system for calibrating a printing system'19975,608,821'Method of high addressability error diffusion'19975,606,648'Apparatus and method for modulating image signals in a high addressability printing machine'19975,579,418'Image interpolation apparatus'19965,528,384'System and method for implementing fast high addressability error diffusion process'19965,513,282'Method and apparatus for controlling the processing of digital image signals'19965,390,029'Method for controlling the processing of digital image signals'19955,327,262'Automatic image segmentation with smoothing'19945,307,180'Method and apparatus for controlling the processing of digital image signals'19945,274,472'High addressability image generator using pseudo interpolation of video and screen data'19935,237,432'Image scaling apparatus'19935,223,953'Screening circuit for variable angle screening of image pixels'19934,878,119'System for synchronizing integration pulses with integration signal in an asynchronous raster input scanner'19894,757,389'Calibration improvement with dither for a raster input scanner'19884,755,813'Screening circuit for screening image pixels'19884,746,987'Modulator control for automatically overcoming intensity variations in a laser scanner'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–2006Patents assigned to XEROX CORP (43)· patent assignee history
1988–1989Based in Penfield, NY, US· patent location history
1993–2019Based in Walworth, NY, US· patent location history
2013–2021Patents assigned to ELECTRONICS FOR IMAGING INC (13)· patent assignee history
2013–2018Patents assigned to WILLIAMS LEON (4)· patent assignee history
2014Patents assigned to MCCUEN MARK (1)· patent assignee history
2018Patents assigned to MARSDEN JONATHAN (1)· patent assignee history
2018–2021Based in Foster City, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| XEROX CORP | 43 | 1988–2006 |
| ELECTRONICS FOR IMAGING INC | 13 | 2013–2021 |
| WILLIAMS LEONself | 4 | 2013–2018 |
| MARSDEN JONATHAN | 1 | 2018 |
| MCCUEN MARK | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Walworth, New York, US | 49 | 1993–2019 |
| Penfield, New York, US | 4 | 1988–1989 |
| Foster City, California, US | 3 | 2018–2021 |