Inventor · disambiguated record
Yukio Sakano
Also filed as: SAKANO YUKIO
27 granted patents·997 citations·filing 1978–1998
97Inventor score
Files withRICOH KK27
Top patents by PatentIndex Score
27 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
- 0386US4760464AShading correction system for image scanning apparatusRICOH KK·Filed 1987·Granted Jul 26, 1988·53 cites·11 claims
- 0485US4707745ADigital copier with document image region decision deviceRICOH KK·Filed 1985·Granted Nov 17, 1987·46 cites·48 claims
- 0582US5798844ADuplicator having function concerning specific mark put on recording sheet and image forming apparatus having function of processing confidential documentsRICOH KK·Filed 1994·Granted Aug 25, 1998·73 cites·15 claims
- 0682US5339171AImage processing apparatus especially suitable for producing smooth-edged output multi-level tone data having fewer levels than input multi-level tone dataRICOH KK·Filed 1992·Granted Aug 16, 1994·60 cites·15 claims
- 0779US5652803ASpecial-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
- 0878US5444518AImage forming apparatus which adds identification information to recorded images to prevent forgeryRICOH KK·Filed 1993·Granted Aug 22, 1995·47 cites·9 claims
- 0977US6272248B1Original-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
- 1072US5444543AMethod and apparatus for detecting a closed-loop area of an imageRICOH KK·Filed 1993·Granted Aug 22, 1995·63 cites·16 claims
- 1165US4908716AImage processing apparatusRICOH KK·Filed 1988·Granted Mar 13, 1990·19 cites·10 claims
- 1264US5144338AImage recorder using pulse width modulationRICOH KK·Filed 1990·Granted Sep 1, 1992·23 cites·9 claims
- 1358US5283664AApparatus for converting and processing input bi-level image data and faithfully rendering tones, colors, and edgesRICOH KK·Filed 1991·Granted Feb 1, 1994·18 cites·9 claims
- 1458US4875190ATwo-dimensional memory unit having a 2d array of individually addressable blocks each having a 2d array of cellsRICOH KK·Filed 1987·Granted Oct 17, 1989·16 cites·8 claims
- 1557US4479119ACRT Display deviceRICOH KK·Filed 1981·Granted Oct 23, 1984·15 cites·9 claims
- 1656US5801844AImage processing apparatusRICOH KK·Filed 1995·Granted Sep 1, 1998·23 cites·13 claims
- 1755US5337162AImage processing apparatus for preventing occurrence of moire in output imageRICOH KK·Filed 1992·Granted Aug 9, 1994·15 cites·13 claims
- 1853US5473444AImage processing device having function of detecting dotted-image areaRICOH KK·Filed 1995·Granted Dec 5, 1995·17 cites·6 claims
- 1952US4984283ATwo dimensional half-tone dot discrimination deviceRICOH KK·Filed 1988·Granted Jan 8, 1991·11 cites·8 claims
- 2045US5144456AImage processing apparatus and methodRICOH KK·Filed 1990·Granted Sep 1, 1992·14 cites·30 claims
- 2140US4227644ADocument feed apparatusRICOH KK·Filed 1978·Granted Oct 14, 1980·5 cites·23 claims
- 2238US5771104AImage processing apparatus having function of magnification changing image dataRICOH KK·Filed 1995·Granted Jun 23, 1998·8 cites·29 claims
- 2338US5764812AImage processing apparatus for providing an isolated-dot removing functionRICOH KK·Filed 1996·Granted Jun 9, 1998·6 cites·11 claims
- 2436US5579417AImage processing apparatusRICOH KK·Filed 1995·Granted Nov 26, 1996·7 cites·8 claims
- 2536US4615018AMethod for writing data into a memoryRICOH KK·Filed 1984·Granted Sep 30, 1986·10 cites·10 claims
- 2634US4805120ATwo-color image recorderRICOH KK·Filed 1988·Granted Feb 14, 1989·3 cites·8 claims
- 2732US4851920ADigital copying apparatusRICOH KK·Filed 1988·Granted Jul 25, 1989·2 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →