P

Inventor

SHIRASAWA HISAO

JP21 patents
⚠️ This page may combine multiple inventors who share the name “SHIRASAWA HISAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RICOH KK

13 patents
US6226011B1May 1, 2001

Color conversion method for a color matching, a method for expanding a function of a program module and a color conversion method using the method for expanding a function of a program module

RICOH KK91 citations97
US6137595AOct 24, 2000

Color conversion processing method for color matching and a processor readable medium storing a program for implementing the color conversion processing method

RICOH KK59 citations96
US5299025AMar 29, 1994

Method of coding two-dimensional data by fast cosine transform and method of decoding compressed data by inverse fast cosine transform

RICOH KK85 citations96
US5689590ANov 18, 1997

Background noise removing apparatus and method applicable to color image processing apparatus

RICOH KK81 citations95
US5696842ADec 9, 1997

Image processing system for adaptive coding of color document images

RICOH KK114 citations94
US7564604B2Jul 21, 2009

Color signal processing and color profile creation for color image reproduction

RICOH KK28 citations92
US7072084B2Jul 4, 2006

Color converting device emphasizing a contrast of output color data corresponding to a black character

RICOH KK23 citations92
US7454528B2Nov 18, 2008

Image output apparatus using close range radio contact wherein radio contact element is attached to document on which an image is recorded

RICOH KK13 citations84
US7310167B2Dec 18, 2007

Color converting device emphasizing a contrast of output color data corresponding to a black character

RICOH KK14 citations84
US6839460B2Jan 4, 2005

Image processing method, image processing apparatus and recording medium

RICOH KK12 citations84
US6796629B2Sep 28, 2004

Color image processing apparatus, color image forming method, and recording medium

RICOH KK18 citations84
US7710600B2May 4, 2010

Image processing apparatus and method thereof

RICOH KK6 citations62
US7362896B2Apr 22, 2008

Image processing method, image processing apparatus and recording medium

RICOH KK2 citations62

RICOH CO LTD

3 patents

MIYAHARA SEIJI

2 patents

SAITO NOBUYUKI

1 patent

SHIRASAWA HISAO

1 patent

MORITA YOUICHI

1 patent