Kok Chen — 38 Patents at Apple

Kok Chen has been granted 38 US patents while listed as an inventor at Apple. The first was granted in 1993 and the most recent in November 2013. Kok Chen ranks #84,675 of 4,157,543 US inventors in our database (top 2.0%). Patent records list Kok Chen in Palo Alto, CA, US.

Issued Patents All Time

Showing 1–25 of 38 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
8587603	Method and apparatus for improved color correction	Gabriel Marcu, Steve Swen	2013-11-19	$96,980,000
8452090	Bayer reconstruction of images using a GPU	Ralph Brunner, Mark Zimmer	2013-05-28	$91,700,000
7969478	Method and apparatus for color correction of color devices for various operating conditions	Gabriel Marcu, Wei Chen, John Z. Zhong	2011-06-28	$127,709,000
7688328	Luminance point correction without luminance degradation	Gabriel Marcu	2010-03-30	$91,112,000
7574041	Conversion of output device color values to minimize image quality artifacts	Kevin W. Andresen	2009-08-11	$150,586,000
7460129	Manipulating text and graphic appearance	Mark Zimmer	2008-12-02	$129,435,000
7460277	System and method for halftoning using a time-variable halftone pattern	Gabriel Marcu	2008-12-02	$129,435,000
7456843	Method and apparatus for improved color correction	Gabriel Marcu	2008-11-25	$77,836,000
7397964	Gaussian blur approximation suitable for GPU	Ralph Brunner, John Harper	2008-07-08	$467,155,000
7274817	Conversion of output device color values to minimize image quality artifacts	Kevin W. Andresen	2007-09-25	$336,537,000
7227551	Manipulating text and graphic appearance	Mark Zimmer	2007-06-05	$852,004,000
7187474	System and method for halftoning using a time-variable halftone pattern	Gabriel Marcu	2007-03-06	$304,408,000
7084881	Method and apparatus for improved color correction	Gabriel Marcu, Steve Swen	2006-08-01	$181,574,000
6972772	White point correction without luminance degradation	Gabriel Marcu	2005-12-06	$136,146,000
6954193	Method and apparatus for correcting pixel level intensity variation	Jose Andrade, Peter Graffagnino, Gabriel Marcu	2005-10-11	$108,649,000
6844881	Method and apparatus for improved color correction	Gabriel Marcu	2005-01-18	$90,429,000
6571011	Conversion of output device color values to minimize image quality artifacts	Kevin W. Andresen	2003-05-27	$18,569,000
6268859	Method and system for rendering overlapping opaque graphical objects in graphic imaging systems	Kevin W. Andresen	2001-07-31	$42,779,000
6141121	Method and apparatus for color halftoning	Magnus Karlsson	2000-10-31	$33,059,000
6118898	Methods and apparatus for compressing and decompressing multiple data sets and for managing memory storage of compressed data sets	David D. Barnes	2000-09-12	$88,168,000
6115496	Method and apparatus for accelerating image data compression	Hungviet Nguyen, Riaz A. Moledina	2000-09-05	$96,738,000
6028962	System and method for variable encoding based on image content	Stuart L. Claassen, Riaz A. Moledina	2000-02-22	$41,069,000
6020975	System and method for accelerated data recompression	Magnus Karlsson, Hungviet Nguyen	2000-02-01	$54,027,000
5930387	Method and apparatus for encoding color image data using dynamic color matching	Allen M. Chan	1999-07-27	$10,369,000
5917962	Method and apparatus for partitioning an image	Marilyn Chen, Allen M. Chan	1999-06-29	$18,720,000

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Kok Chen — 38 Patents

Issued Patents All Time

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