Inventor · disambiguated record
Seiichiro Hiratsuka
Also filed as: HIRATSUKA SEIICHIRO
54 granted patents·2 pending applications·1,171 citations·filing 1984–2021
99Inventor score
Files withKONISHIROKU PHOTO IND38MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15FUJIFILM BUSINESS INNOVATION CORP3
Top patents by PatentIndex Score
56 records- 0195US4599285AMultiplex image reproducing methodKONISHIROKU PHOTO IND·Filed 1984·Granted Jul 8, 1986·38 cites·26 claims
- 0289US4980760AImage processing apparatusKONISHIROKU PHOTO IND·Filed 1989·Granted Dec 25, 1990·61 cites·6 claims
- 0388US4679929AMultiplex image reproducing apparatusKONISHIROKU PHOTO IND·Filed 1986·Granted Jul 14, 1987·25 cites·35 claims
- 0488US4557992ADeveloping methodKONISHIROKU PHOTO IND·Filed 1984·Granted Dec 10, 1985·29 cites·17 claims
- 0584US5715095AColor separating device and color image reading device incorporating sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Feb 3, 1998·73 cites·12 claims
- 0683US4839692AApparatus for reproducing multi-color imageKONISHIROKU PHOTO IND·Filed 1987·Granted Jun 13, 1989·22 cites·8 claims
- 0783US4797335ADeveloping method for electrostatic images using composite component developer under non-contacting conditionsKONISHIROKU PHOTO IND·Filed 1987·Granted Jan 10, 1989·25 cites·12 claims
- 0881US4841332AToner control for a developer deviceKONISHIROKU PHOTO IND·Filed 1986·Granted Jun 20, 1989·23 cites·26 claims
- 0981US4803558AHalftone image estimation methods for dither imagesKONISHIROKU PHOTO IND·Filed 1986·Granted Feb 7, 1989·38 cites·16 claims
- 1080US6924819B2Image processorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Aug 2, 2005·19 cites·4 claims
- 1180US4758897AMethod and apparatus for estimating halftone image from binary imageKONISHIROKU PHOTO IND·Filed 1986·Granted Jul 19, 1988·34 cites·9 claims
- 1280US4680625AMethod and apparatus for multicolor image formingKONISHIROKU PHOTO IND·Filed 1985·Granted Jul 14, 1987·36 cites·13 claims
- 1379US6611620B1Reversible coding method, reversible coding apparatus, and memory medium used thereinMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Aug 26, 2003·77 cites·7 claims
- 1479US5357354AColor image processing apparatus capable of discriminating between a monochromatic document and a color documentKONISHIROKU PHOTO IND·Filed 1993·Granted Oct 18, 1994·49 cites·10 claims
- 1578US4768082AMethods of compressing and reproducing color image dataKONISHIROKU PHOTO IND·Filed 1987·Granted Aug 30, 1988·34 cites·10 claims
- 1676US4841377AContinuous image estimation methodKONISHIROKU PHOTO IND·Filed 1987·Granted Jun 20, 1989·28 cites·19 claims
- 1775US6681049B1Image encoding method and apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jan 20, 2004·20 cites·3 claims
- 1874US5109274AColor image processing apparatusKONISHIROKU PHOTO IND·Filed 1990·Granted Apr 28, 1992·36 cites·7 claims
- 1972US4903142AApparatus for processing halftone imageKONISHIROKU PHOTO IND·Filed 1989·Granted Feb 20, 1990·25 cites·23 claims
- 2070US4669864AImage forming apparatusKONISHIROKU PHOTO IND·Filed 1986·Granted Jun 2, 1987·16 cites·21 claims
- 2169US4803514AMulti-color image forming method and apparatusKONISHIROKU PHOTO IND·Filed 1985·Granted Feb 7, 1989·15 cites·8 claims
- 2269US4666804AMethod of and apparatus for image formingKONISHIROKU PHOTO IND·Filed 1985·Granted May 19, 1987·13 cites·8 claims
- 2368US6801664B1Method of image coding, image coding apparatus, and recording medium including image coding programMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 5, 2004·8 cites·7 claims
- 2468US5287209AImage forming device for enhancing tone reproduction by changing dot sizeMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Feb 15, 1994·33 cites·30 claims
- 2568US4756985AMethod of forming multicolor imagesKONISHIROKU PHOTO IND·Filed 1987·Granted Jul 12, 1988·14 cites·28 claims
- 2667US5121445AMethod and apparatus for reading imageKONISHIROKU PHOTO IND·Filed 1991·Granted Jun 9, 1992·26 cites·12 claims
- 2767US4717964AImage processing apparatusKONISHIROKU PHOTO IND·Filed 1986·Granted Jan 5, 1988·21 cites·12 claims
- 2867US4629669AMethod of forming superimposed color imagesKONISHIROKU PHOTO IND·Filed 1985·Granted Dec 16, 1986·14 cites·26 claims
- 2965US4746589ADeveloping method in electrophotography using oscillating electric fieldKONISHIROKU PHOTO IND·Filed 1987·Granted May 24, 1988·13 cites·58 claims
- 3063US5241609AMarker color conversion apparatus for color image processing deviceKONISHIROKU PHOTO IND·Filed 1991·Granted Aug 31, 1993·22 cites·5 claims
- 3162US5337167AHalftone image forming apparatus including density based dot enlargementMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted Aug 9, 1994·21 cites·16 claims
- 3262US5208663AColor image processing apparatus provided with an image discrimination meansKONISHIROKU PHOTO IND·Filed 1992·Granted May 4, 1993·28 cites·7 claims
- 3361US6108441AColor adjustment method for pixels of color images that designates color and corresponding adjustment colorsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Aug 22, 2000·41 cites·28 claims
- 3461US5301271AImage processing separately processing two-density-level image data and multi-level image dataMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted Apr 5, 1994·25 cites·9 claims
- 3560US5157483AMulticolor image forming method and apparatusKONISHIROKU PHOTO IND·Filed 1991·Granted Oct 20, 1992·19 cites·14 claims
- 3657US5237400ACompact color image processing apparatus with enhanced density conversionKONISHIROKU PHOTO IND·Filed 1991·Granted Aug 17, 1993·17 cites·11 claims
- 3757US4696880AMethod and apparatus for reproducing multi-color image and photoreceptor thereofKONISHIROKU PHOTO IND·Filed 1985·Granted Sep 29, 1987·8 cites·12 claims
- 3856US4841337AImage forming apparatusKONISHIROKU PHOTO IND·Filed 1988·Granted Jun 20, 1989·13 cites·10 claims
- 3954US4803518AApparatus for forming a multi-color toner imageKONISHIROKU PHOTO IND·Filed 1987·Granted Feb 7, 1989·8 cites·19 claims
- 4051US4970536AApparatus for multicolor image forming wherein image forming conditions are adjusted based on reference imagesKONISHIROKU PHOTO IND·Filed 1988·Granted Nov 13, 1990·8 cites·17 claims
- 4151US4641200AImage reproducing apparatus with variable AC biasKONISHIROKU PHOTO IND·Filed 1985·Granted Feb 3, 1987·10 cites·15 claims
- 4250US7068859B2Method and apparatus for three-dimensional signal conversionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Jun 27, 2006·6 cites·8 claims
- 4350US5119184AColor image processing apparatus with digital color signal compression meansKONISHIROKU PHOTO IND·Filed 1990·Granted Jun 2, 1992·12 cites·12 claims
- 4447US11716298B2Information processing apparatus, information processing method, and non-transitory computer readable mediumFUJIFILM BUSINESS INNOVATION CORP·Filed 2021·Granted Aug 1, 2023·0 cites·17 claims
- 4546US5220416AColor image processing apparatusKONISHIROKU PHOTO IND·Filed 1990·Granted Jun 15, 1993·10 cites·8 claims
- 4645US5119207ACopier with image transfer region determination and selective sampling of image data thereofKONISHIROKU PHOTO IND·Filed 1991·Granted Jun 2, 1992·9 cites·7 claims
- 4744US5907414AColor image processing apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted May 25, 1999·10 cites·2 claims
- 4844US2022284363A1Information processing apparatus, information processing method, and non-transitory computer readable mediumFUJIFILM BUSINESS INNOVATION CORP·Filed 2021·Application pending·0 cites
- 4943US2022295379A1Information processing device, information processing method, and non-transitory computer readable mediumFUJIFILM BUSINESS INNOVATION CORP·Filed 2021·Application pending·0 cites
- 5042US5978098AImage compression methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Nov 2, 1999·13 cites·7 claims
Showing the top 50 of 56 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →