Inventor · disambiguated record
Ryoji Takahashi
Also filed as: TAKAHASHI RYOJI · TAKASHI RYOJI
28 granted patents·2 pending applications·232 citations·filing 1975–2021
96Inventor score
Files withCHISSO CORP8SANKEN ELECTRIC CO LTD5TOKAI RIKA CO LTD5MITSUBISHI ELECTRIC CORP2NEC DISPLAY SOLUTIONS LTD2
Top patents by PatentIndex Score
30 records- 0182US10598142B2Illuminated momentary push button switchTOKAI RIKA CO LTD·Filed 2018·Granted Mar 24, 2020·2 cites·6 claims
- 0281US10590901B2Switch deviceTOKAI RIKA CO LTD·Filed 2018·Granted Mar 17, 2020·2 cites·8 claims
- 0380US7114962B1Circuit unit deviceTOKAI RIKA CO LTD·Filed 2006·Granted Oct 3, 2006·3 cites·3 claims
- 0480US5599626AMelamine-coated ammonium polyphosphateCHISSO CORP·Filed 1994·Granted Feb 4, 1997·21 cites·12 claims
- 0577US7872315B2Electronic switching deviceSANKEN ELECTRIC CO LTD·Filed 2010·Granted Jan 18, 2011·5 cites·16 claims
- 0677US4208695AProximity detectorMITSUBISHI ELECTRIC CORP·Filed 1978·Granted Jun 17, 1980·27 cites·3 claims
- 0774US5945467AFlame-retardant thermosetting resin composition, water-insoluble ammonium polyphosphate particles and method for producing the particlesCHISSO CORP·Filed 1997·Granted Aug 31, 1999·24 cites·11 claims
- 0873US7045106B2Method for producing inorganic porous materialTOKUYAMA CORP·Filed 2002·Granted May 16, 2006·14 cites·8 claims
- 0971US8334563B2Field-effect semiconductor device and method of producing the sameTAKAHASHI RYOJI·Filed 2010·Granted Dec 18, 2012·5 cites·13 claims
- 1070US5700575AWater-insoluble ammonium polyphosphate particlesCHISSO CORP·Filed 1994·Granted Dec 23, 1997·14 cites·12 claims
- 1170US5430080AFlame-retardant thermoplastic resin compositionCHISSO CORP·Filed 1994·Granted Jul 4, 1995·17 cites·19 claims
- 1265US7863678B2Insulated-gate field-effect transistorSANKEN ELECTRIC CO LTD·Filed 2009·Granted Jan 4, 2011·2 cites·7 claims
- 1365US5795930AWater insoluble ammonium polyphosphate powder for flame-retardant thermoplastic polymer compositionCHISSO CORP·Filed 1994·Granted Aug 18, 1998·15 cites·46 claims
- 1461US9123549B2Semiconductor deviceSANKEN ELECTRIC CO LTD·Filed 2014·Granted Sep 1, 2015·1 cites·9 claims
- 1559US5344855AFlame-retardant and its compositionCHISSO CORP·Filed 1993·Granted Sep 6, 1994·14 cites·5 claims
- 1657US5534291AProcess for producing a melamine-coated ammonium polyphosphateCHISSO CORP·Filed 1995·Granted Jul 9, 1996·15 cites·7 claims
- 1753US11030947B2Display device equipped with position detecting device for detecting positions of pixels subjected to luminance calibrationNEC DISPLAY SOLUTIONS LTD·Filed 2019·Granted Jun 8, 2021·0 cites·10 claims
- 1852US10859053B2Switch deviceTOKAI RIKA CO LTD·Filed 2018·Granted Dec 8, 2020·0 cites·5 claims
- 1952US10331274B2Light source device, electronic blackboard system, and method of controlling light source deviceNEC DISPLAY SOLUTIONS LTD·Filed 2014·Granted Jun 25, 2019·0 cites·20 claims
- 2052USD777234SCameraDXO LABS·Filed 2015·Granted Jan 24, 2017·7 cites·1 claims
- 2152US5160582ACellulose-based, inflammable, bulky processed sheets and method for making such sheetsCHISSO CORP·Filed 1990·Granted Nov 3, 1992·21 cites·18 claims
- 2248US7267812B2Crystalline inorganic porous material and production process thereforTOKUYAMA COPORATION·Filed 2003·Granted Sep 11, 2007·11 cites·6 claims
- 2346US4278581AMold binder materialHITACHI LTD·Filed 1978·Granted Jul 14, 1981·4 cites·9 claims
- 2444US2009090826A1Structure for attaching a switch body to a steering column tubeTOKAI RIKA CO LTD·Filed 2008·Application pending·0 cites
- 2541US7161230B2Insulated gate bipolar transistor having a high switching speed and method for fabricating the sameSANKEN ELECTRIC CO LTD·Filed 2004·Granted Jan 9, 2007·1 cites·16 claims
- 2640US4021232ACast iron melting processHITACHI METALS LTD·Filed 1975·Granted May 3, 1977·2 cites·37 claims
- 2740US2021144288A1Display system and display system control methodSHARP NEC DISPLAY SOLUTIONS LTD·Filed 2021·Application pending·0 cites
- 2838US10384128B2Object placing game with character battlesBANDAI NAMCO ENTERTAINMENT INC·Filed 2017·Granted Aug 20, 2019·0 cites·19 claims
- 2936US7067900B2Insulated gate bipolar transistor having a reduced tail current and method of fabricating the sameSANKEN ELECTRIC CO LTD·Filed 2004·Granted Jun 27, 2006·0 cites·6 claims
- 3032US4677437AInput signal switching matrix for an elevatorMITSUBISHI ELECTRIC CORP·Filed 1986·Granted Jun 30, 1987·5 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →