Inventor · disambiguated record
Michiyoshi Tachikawa
Also filed as: TACHIKAWA MICHIYOSHI
19 granted patents·987 citations·filing 1987–2012
96Inventor score
Top patents by PatentIndex Score
19 records- 0187US5751854AOriginal-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination systemRICOH KK·Filed 1996·Granted May 12, 1998·181 cites·4 claims
- 0287US5659628ASpecial-document discriminating apparatus and managing system for image forming apparatus having a special-document discriminating functionRICOH KK·Filed 1996·Granted Aug 19, 1997·93 cites·6 claims
- 0383US5031225ACharacter recognition method for recognizing character in an arbitrary rotation positionRICOH KK·Filed 1988·Granted Jul 9, 1991·85 cites·30 claims
- 0480US9172931B2Projection display device, information processing device, projection display system, and programHASEGAWA FUMIHIRO·Filed 2012·Granted Oct 27, 2015·4 cites·8 claims
- 0579US7140534B2Data recording medium, reading device, recording device, and methods thereofRICOH KK·Filed 2003·Granted Nov 28, 2006·20 cites·10 claims
- 0679US5652803ASpecial-document discriminating apparatus and managing system for image forming apparatus having a special-document discriminating functionRICOH KK·Filed 1996·Granted Jul 29, 1997·56 cites·5 claims
- 0778US5444518AImage forming apparatus which adds identification information to recorded images to prevent forgeryRICOH KK·Filed 1993·Granted Aug 22, 1995·47 cites·9 claims
- 0877US6272248B1Original-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination systemRICOH KK·Filed 1998·Granted Aug 7, 2001·113 cites·2 claims
- 0972US6115495AImage extraction method and apparatus, and image recognition method and apparatus for extracting/recognizing specific images from input image signalsRICOH KK·Filed 1997·Granted Sep 5, 2000·75 cites·22 claims
- 1071US4959870ACharacter recognition apparatus having means for compressing feature dataRICOH KK·Filed 1988·Granted Sep 25, 1990·52 cites·11 claims
- 1171US4903313ACharacter recognition methodRICOH KK·Filed 1987·Granted Feb 20, 1990·51 cites·6 claims
- 1266US5048107ATable region identification methodRICOH KK·Filed 1990·Granted Sep 10, 1991·50 cites·6 claims
- 1356US5757957AApparatus and method for area separation for image, having improved separation accuracyRICOH KK·Filed 1995·Granted May 26, 1998·43 cites·22 claims
- 1455US6181820B1Image extraction method and apparatus and image recognition method and apparatus for extracting/recognizing specific images from input image signalsRICOH KK·Filed 1999·Granted Jan 30, 2001·33 cites·6 claims
- 1548US5097520AMethod of obtaining optimum threshold valuesRICOH KK·Filed 1989·Granted Mar 17, 1992·18 cites·18 claims
- 1646US5351313ABinarization methodRICOH KK·Filed 1991·Granted Sep 27, 1994·19 cites·6 claims
- 1744US6226417B1Method and system for recognizing a rotated image pattern with reduced processing time and memory spaceRICOH KK·Filed 1998·Granted May 1, 2001·25 cites·10 claims
- 1840US6862370B2Image detecting method, image detecting system, program, and recording medium for image detectionRICOH KK·Filed 2001·Granted Mar 1, 2005·1 cites·9 claims
- 1940US6256412B1Image recognition method and apparatus using image rotation informationRICOH KK·Filed 1997·Granted Jul 3, 2001·21 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →