Inventor · disambiguated record
Takeshi Sakashita
Also filed as: MIYAMOTO RYOICHI · SAKASHITA TAKESHI
124 granted patents·8 pending applications·2,316 citations·filing 1978–2025
99Inventor score
Files withTAIYO YUDEN KK21GEN ELECTRIC18MITSUI PETROCHEMICAL IND17FUJITSU MEDIA DEVICES LTD12GE PLASTICS JAPAN LTD12
Top patents by PatentIndex Score
132 records- 0199US5097002AMelt, catalytic process for preparing polycarbonates from carbonic acid diesterGE PLASTICS JAPAN LTD·Filed 1991·Granted Mar 17, 1992·160 cites·4 claims
- 0298US5717057AMethod of manufacturing polycarbonateGEN ELECTRIC·Filed 1995·Granted Feb 10, 1998·167 cites·26 claims
- 0398US5151491ACatalytic melt condensation preparation of polycarbonateGE PLASTICS JAPAN LTD·Filed 1989·Granted Sep 29, 1992·117 cites·21 claims
- 0497US5142018AProcess for preparing polycarbonatesGE PLASTICS JAPAN LTD·Filed 1991·Granted Aug 25, 1992·73 cites·3 claims
- 0597US5026817ACatalytic process for preparing polycarbonates from carbonic acidGE PLASTICS JAPAN LTD·Filed 1989·Granted Jun 25, 1991·65 cites·13 claims
- 0695US8084919B2Piezoelectric thin-film resonator, filter using the same, and duplexer using the sameNISHIHARA TOKIHIRO·Filed 2009·Granted Dec 27, 2011·42 cites·17 claims
- 0795US5606007AProcesses for preparing aromatic polycarbonatesGEN ELECTRIC·Filed 1993·Granted Feb 25, 1997·93 cites·4 claims
- 0894US7970297B2Powder container and image forming apparatusRICOH CO LTD·Filed 2008·Granted Jun 28, 2011·18 cites·19 claims
- 0994US5525701AMethod for the manufacture of aromatic polycarbonateGEN ELECTRIC·Filed 1994·Granted Jun 11, 1996·71 cites·3 claims
- 1094US5401826AMethod for the preparation, of copolymeric polycarbonatesGE PLASTICS JAPAN LTD·Filed 1993·Granted Mar 28, 1995·53 cites·11 claims
- 1194US5276129APolycarbonate containing terminal hydroxy groups, low sodium and chlorine contentGE PLASTICS JAPAN LTD·Filed 1992·Granted Jan 4, 1994·57 cites·6 claims
- 1294US4607073AMolding polyamide compositionMITSUI PETROCHEMICAL IND·Filed 1985·Granted Aug 19, 1986·72 cites·11 claims
- 1392US8841819B2Acoustic wave deviceNISHIHARA TOKIHIRO·Filed 2011·Granted Sep 23, 2014·14 cites·10 claims
- 1492US8005412B2Transfer device and image forming apparatusRICOH CO LTD·Filed 2008·Granted Aug 23, 2011·16 cites·14 claims
- 1592US7778568B2Image forming apparatus having guide member for detachable unitRICOH KK·Filed 2007·Granted Aug 17, 2010·14 cites·18 claims
- 1692US7567023B2Piezoelectric thin-film resonator and filter using the sameFUJITSU MEDIA DEVICES LTD·Filed 2007·Granted Jul 28, 2009·24 cites·13 claims
- 1791US8125298B2Acoustic wave filter, duplexer using the acoustic wave filter, and communication apparatus using the duplexerHARA MOTOAKI·Filed 2010·Granted Feb 28, 2012·13 cites·12 claims
- 1891US7751762B2Transfer device and image forming apparatus including the sameRICOH KK·Filed 2007·Granted Jul 6, 2010·13 cites·28 claims
- 1990US8045887B2Image forming apparatusRICOH CO LTD·Filed 2007·Granted Oct 25, 2011·12 cites·31 claims
- 2090US7498899B2Duplexer with filters including film bulk acoustic resonatorsFUJITSU MEDIA DEVICES LTD·Filed 2005·Granted Mar 3, 2009·21 cites·6 claims
- 2189US4526920ACurable coating composition containing acryloyl or methacryloyl cyanurate or isocyanurate compound, cured composition therefrom, and process for producing articles by using the curable compositionMITSUI PETROCHEMICAL IND·Filed 1983·Granted Jul 2, 1985·49 cites·15 claims
- 2288US9444429B2Piezoelectric thin-film resonator, method for fabricating same, filter and duplexer having an interposed filmTAIYO YUDEN KK·Filed 2014·Granted Sep 13, 2016·3 cites·12 claims
- 2388US5496921AMelt process for polycarbonate with improved heat stabilityGE PLASTICS JAPAN·Filed 1994·Granted Mar 5, 1996·27 cites·12 claims
- 2487US4920188ACurable compositionsMITSUI PETROCHEMICAL IND·Filed 1988·Granted Apr 24, 1990·88 cites·2 claims
- 2586US6734763B2Thin-film piezoelectric resonator, band-pass filter and method of making thin-film piezoelectric resonatorFUJITSU LTD·Filed 2002·Granted May 11, 2004·29 cites·26 claims
- 2686US5880248APolycarbonate, copolycarbonate resin compositions and preparing method thereofGEN ELECTRIC·Filed 1998·Granted Mar 9, 1999·34 cites·3 claims
- 2786US5470938ACopolymeric polycarbonate compositions containing a sulfonic acid compoundGE PLASTICS JAPAN LTD·Filed 1995·Granted Nov 28, 1995·34 cites·5 claims
- 2886US5364926APreparing method of polycarbonate resin compounds for the optical useGE PLASTICS JAPAN LTD·Filed 1993·Granted Nov 15, 1994·41 cites·6 claims
- 2986US4985516ACurable compositionMITSUI PETROCHEMICAL IND·Filed 1989·Granted Jan 15, 1991·86 cites·4 claims
- 3086US4925660ACurable compositions for dental drugs having sustained release propertyMITSUI PETROCHEMICAL IND·Filed 1988·Granted May 15, 1990·71 cites·11 claims
- 3185US9240769B2Piezoelectric thin film resonator, filter, communication module and communication deviceSAKASHITA TAKESHI·Filed 2012·Granted Jan 19, 2016·7 cites·16 claims
- 3284US8450906B2Piezoelectric thin-film resonatorTANIGUCHI SHINJI·Filed 2012·Granted May 28, 2013·7 cites·13 claims
- 3384US5502153AMethod for preparing optical-grade polycarbonate compositionsGE PLASTICS JAPAN LTD·Filed 1994·Granted Mar 26, 1996·36 cites·13 claims
- 3484US5286834AMelt preparation of copolycarbonate with alkaline compound catalyst and boric acid compound catalystGE PLASTICS JAPAN LTD·Filed 1992·Granted Feb 15, 1994·20 cites·7 claims
- 3583US7599633B2Image forming apparatus dust container including dust conveyance membersRICOH KK·Filed 2006·Granted Oct 6, 2009·7 cites·14 claims
- 3683US7271684B2Filter element, and filter device, duplexer, and high-frequency circuit each including said filter elementFUJITSU LTD·Filed 2003·Granted Sep 18, 2007·23 cites·15 claims
- 3783US5859172APolycarbonate, copolycarbonate resin compositions and preparing method thereofGEN ELECTRIC·Filed 1997·Granted Jan 12, 1999·30 cites·7 claims
- 3882US10886889B2Acoustic wave device and method of fabricating the same, filter and multiplexerTAIYO YUDEN KK·Filed 2018·Granted Jan 5, 2021·3 cites·19 claims
- 3982US8164398B2Resonator, filter and electronic deviceTANIGUCHI SHINJI·Filed 2009·Granted Apr 24, 2012·12 cites·12 claims
- 4082US7579761B2Piezoelectric thin-film resonator and filterFUJITSU MEDIA DEVICES LTD·Filed 2006·Granted Aug 25, 2009·11 cites·9 claims
- 4181US9857734B2Image forming apparatusSAKASHITA TAKESHI·Filed 2016·Granted Jan 2, 2018·2 cites·13 claims
- 4281US7323953B2Film bulk acoustic resonator and method of producing the sameFUJITSU MEDIA DEVICES LTD·Filed 2004·Granted Jan 29, 2008·20 cites·10 claims
- 4380US9356573B2Piezoelectric thin film resonator, filter and duplexer including a film inserted in the piezoelectric filmTAIYO YUDEN KK·Filed 2014·Granted May 31, 2016·5 cites·9 claims
- 4480US8983357B2Powder transport device and image forming apparatus incorporating sameSAKASHITA TAKESHI·Filed 2012·Granted Mar 17, 2015·9 cites·17 claims
- 4578US8723623B2Acoustic wave device, method of manufacturing acoustic wave device and transmission apparatusHARA MOTOAKI·Filed 2009·Granted May 13, 2014·9 cites·12 claims
- 4678US8265524B2Transfer device, image forming apparatus, and waste toner containerHATAYAMA KOHJI·Filed 2007·Granted Sep 11, 2012·7 cites·17 claims
- 4777US9344059B2Piezoelectric thin film resonator, filter, and duplexer including a film inserted into the piezoelectric filmTAIYO YUDEN KK·Filed 2014·Granted May 17, 2016·4 cites·18 claims
- 4876US8093962B2Filter, duplexer and communication apparatusTANIGUCHI SHINJI·Filed 2009·Granted Jan 10, 2012·8 cites·8 claims
- 4976US5187242APolycarbonate, polyestercarbonate resin compounds and preparing methods thereofGEN ELECTRIC·Filed 1990·Granted Feb 16, 1993·22 cites·2 claims
- 5076US4189548AEpoxy resin compositionMITSUI PETROCHEMICAL IND·Filed 1978·Granted Feb 19, 1980·18 cites·31 claims
Showing the top 50 of 132 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Takeshi Sakashita files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →