Inventor · disambiguated record
Masayoshi Ichikawa
Also filed as: ICHIKAWA MASAYOSHI
45 granted patents·9 pending applications·708 citations·filing 1982–2021
98Inventor score
Files withTOYODA GOSEI KK16DENKA COMPANY LTD13ADVANTEST CORP12ICHIKAWA MASAYOSHI3DENKI KAGAKU KOGYO KK2
Top patents by PatentIndex Score
54 records- 0195US5936023AMethod of manufacturing composite material of clay mineral and rubberTOYODA CHUO KENKYUSHO KK·Filed 1997·Granted Aug 10, 1999·98 cites·18 claims
- 0291US7525593B2Position detection apparatus, position detection method, testing apparatus, and camera module manufacturing apparatusADVANTEST CORP·Filed 2006·Granted Apr 28, 2009·20 cites·12 claims
- 0390US7417220B2Solid state device and light-emitting elementTOYODA GOSEI KK·Filed 2005·Granted Aug 26, 2008·29 cites·20 claims
- 0483US7253443B2Electronic device with integrally formed light emitting device and supporting memberADVANTEST CORP·Filed 2002·Granted Aug 7, 2007·30 cites·21 claims
- 0583US6110546AAutomobile weather strip and method for making the sameTOYODA GOSEI KK·Filed 1997·Granted Aug 29, 2000·51 cites·3 claims
- 0681US5356681AMulti-layer rubber hose and method for producing the sameTOYODA GOSEI KK·Filed 1993·Granted Oct 18, 1994·44 cites·6 claims
- 0781US4606952ARubber laminateTOYODA GOSEI KK·Filed 1985·Granted Aug 19, 1986·62 cites·14 claims
- 0879US5279874AEthylene-propylene rubber compositionsTOYODA GOSEI KK·Filed 1991·Granted Jan 18, 1994·23 cites·9 claims
- 0977US8709282B2Process for producing β-sialon fluorescent materialICHIKAWA MASAYOSHI·Filed 2010·Granted Apr 29, 2014·4 cites·6 claims
- 1076US7471819B2Position detecting apparatus, a position detecting method and an electronic component carrying apparatusADVANTEST CORP·Filed 2005·Granted Dec 30, 2008·9 cites·16 claims
- 1176US4486480ARubber hose comprising a liquid nitrile-butadiene copolymer incorporated into a partially hydrogenated unsaturated acrylonitrile-butadiene copolymerTOYODA GOSEI KK·Filed 1982·Granted Dec 4, 1984·29 cites·4 claims
- 1275US10941339B2Fluorescent fluoride, light-emitting device, and process for producing florescent fluorideDENKA COMPANY LTD·Filed 2016·Granted Mar 9, 2021·1 cites·18 claims
- 1375US4645788AChloroprene rubber compositionKAO CORP·Filed 1985·Granted Feb 24, 1987·23 cites·8 claims
- 1472US4904736AAcrylic rubber compositionDENKI KAGAKU KOGYO KK·Filed 1988·Granted Feb 27, 1990·20 cites·25 claims
- 1571US8926864B2Method of producing β-SiAION, β-SiAION, and products using the sameICHIKAWA MASAYOSHI·Filed 2011·Granted Jan 6, 2015·2 cites·8 claims
- 1671US8017967B2Light-emitting element including a fusion-bonding portion on contact electrodesTOYODA GOSEI KK·Filed 2008·Granted Sep 13, 2011·9 cites·7 claims
- 1769US6133413AMethod of manufacturing devulcanized rubber using high temperature and shearing pressureTOYODA CHUO KENKYUSHO KK·Filed 1996·Granted Oct 17, 2000·25 cites·14 claims
- 1866US7193728B2Processing apparatus, processing method and position detecting deviceADVANTEST CORP·Filed 2002·Granted Mar 20, 2007·13 cites·13 claims
- 1965US5922811AEthylene propylene rubber blend and hose formulated from the sameTOYODA GOSEI KK·Filed 1996·Granted Jul 13, 1999·21 cites·9 claims
- 2062US6071582ARubber layer structureTOYODA GOSEI KK·Filed 1997·Granted Jun 6, 2000·22 cites·21 claims
- 2161US9676999B2Phosphor, light emitting element, and light emitting deviceDENKA COMPANY LTD·Filed 2015·Granted Jun 13, 2017·1 cites·4 claims
- 2259US8363924B2Electronic device testing apparatusADVANTEST CORP·Filed 2005·Granted Jan 29, 2013·3 cites·17 claims
- 2359US6037062ALayered moldingTOYODA GOSEI KK·Filed 1997·Granted Mar 14, 2000·18 cites·10 claims
- 2458US5506322AAcrylic rubber composition and rubber hose obtained using the sameTOYODA GOSEI KK·Filed 1995·Granted Apr 9, 1996·14 cites·9 claims
- 2557US10508235B2Fluoride phosphors and light emitting devices using the sameDENKA COMPANY LTD·Filed 2018·Granted Dec 17, 2019·0 cites·8 claims
- 2656US11114589B2Fluoride phosphor and light-emitting device using sameDENKA COMPANY LTD·Filed 2018·Granted Sep 7, 2021·0 cites·6 claims
- 2756US5798158ALayered molding including fluoroplastic layer crosslinked with rubber layerTOYODA GOSEI KK·Filed 1995·Granted Aug 25, 1998·18 cites·16 claims
- 2855US4491621ADiaphragmTOYODA GOSEI KK·Filed 1982·Granted Jan 1, 1985·8 cites·4 claims
- 2954US6362802B1Method and apparatus for acquiring an image for inspection of a flat panel displayADVANTEST CORP·Filed 1999·Granted Mar 26, 2002·23 cites·8 claims
- 3052US10982139B2Fluoride phosphor and light-emitting device using sameDENKA COMPANY LTD·Filed 2018·Granted Apr 20, 2021·0 cites·7 claims
- 3152US7049608B2Position detection apparatus, position detection method, electronic part carrying apparatus, and electronic beam exposure apparatusADVANTEST CORP·Filed 2003·Granted May 23, 2006·5 cites·20 claims
- 3251US2023313035A1Fluoride phosphor, complex, and light-emitting deviceDENKA COMPANY LTD·Filed 2021·Application pending·0 cites
- 3350US9850131B2Method for producing phosphorDENKI KAGAKU KOGYO KK·Filed 2013·Granted Dec 26, 2017·0 cites·3 claims
- 3450US9680066B2Phosphor, light emitting element, and light emitting deviceDENKA COMPANY LTD·Filed 2015·Granted Jun 13, 2017·0 cites·8 claims
- 3550US8422762B2Abnormality detecting apparatus for detecting abnormality at interface portion of contact armICHIKAWA MASAYOSHI·Filed 2007·Granted Apr 16, 2013·1 cites·38 claims
- 3650US6584236B1Image processing apparatus and method for image processingADVANTEST CORP·Filed 1999·Granted Jun 24, 2003·15 cites·42 claims
- 3750US5418203AFuel absorbent and a process for making the fuel absorbentTOYODA GOSEI KK·Filed 1993·Granted May 23, 1995·11 cites·24 claims
- 3848US10669476B2Potassium fluoromanganate for use as raw material of manganese-activated complex fluoride phosphor and manganese-activated complex fluoride phosphor production method using sameDENKA COMPANY LTD·Filed 2017·Granted Jun 2, 2020·0 cites·1 claims
- 3948US2022348478A1Potassium hexafluoromanganate, method for producing potassium hexafluoromanganate, and method for producing manganese-activated complex fluoride phosphorDENKA COMPANY LTD·Filed 2020·Application pending·0 cites
- 4048US2022356074A1Potassium hexafluoromanganate, and method for producing manganese-activated complex fluoride fluorescent bodyDENKA COMPANY LTD·Filed 2020·Application pending·0 cites
- 4146US6500561B1Automobile weatherstrippingTOYODA GOSEI KK·Filed 1998·Granted Dec 31, 2002·14 cites·7 claims
- 4246US5917957AMethod of and apparatus for processing an imageADVANTEST CORP·Filed 1997·Granted Jun 29, 1999·15 cites·6 claims
- 4345US2019071602A1Fluoride phosphors and light emitting devices using the sameDENKA COMPANY LTD·Filed 2018·Application pending·0 cites
- 4444US10759995B2Process for producing fluorescent materialDENKA COMPANY LTD·Filed 2016·Granted Sep 1, 2020·0 cites·5 claims
- 4544US5881164AImage data processing method and image data processing apparatusADVANTEST CORP·Filed 1997·Granted Mar 9, 1999·13 cites·12 claims
- 4644US5214103AEthylene-propylene type rubber compositionTOYODA GOSEI KK·Filed 1991·Granted May 25, 1993·9 cites·8 claims
- 4742US2008059095A1Electronic Device Handling Apparatus and Defective Terminal Determination MethodADVANTEST CORP·Filed 2005·Application pending·0 cites
- 4839US9163175B2β-sialon and method of manufacturing thereof, and light-emitting deviceTAKEDA GO·Filed 2011·Granted Oct 20, 2015·0 cites·11 claims
- 4939US2004146194A1Image matching method, image matching apparatus, and wafer processorFiled 2003·Application pending·0 cites
- 5039US2018086973A1Phosphor and light-emitting deviceDENKA COMPANY LTD·Filed 2016·Application pending·0 cites
Showing the top 50 of 54 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →