Inventor · disambiguated record
Yoshiaki Fujita
Also filed as: FUJITA YOSHIAKI
35 granted patents·1 pending application·664 citations·filing 1985–2008
98Inventor score
Files withOKI ELECTRIC IND CO LTD12NIPPON PISTON RING CO LTD6TOSHIBA KK6TOSHIBA ELEVATOR KK5OKI SEMICONDUCTOR CO LTD4
Top patents by PatentIndex Score
36 records- 0197US6377140B1Saw resonator filter with bridged-T configurationOKI ELECTRIC IND CO LTD·Filed 2000·Granted Apr 23, 2002·170 cites·16 claims
- 0295US5289902AElevatorTOSHIBA KK·Filed 1992·Granted Mar 1, 1994·56 cites·13 claims
- 0388US6677835B2Saw filter with an attenuation pole including a band-pass ladder type of saw filter having a saw resonatorOKI ELECTRIC IND CO LTD·Filed 2001·Granted Jan 13, 2004·35 cites·28 claims
- 0488US6488124B1ElevatorTOSHIBA KK·Filed 1998·Granted Dec 3, 2002·58 cites·18 claims
- 0586US6937113B2Branching filter packageOKI ELECTRIC IND CO LTD·Filed 2002·Granted Aug 30, 2005·20 cites·22 claims
- 0686US6222426B1Branching filter with a composite circuit of an LC circuit and a serial arm saw resonatorOKI ELECTRIC IND CO LTD·Filed 1999·Granted Apr 24, 2001·41 cites·11 claims
- 0785US6489861B2Antenna duplexer with divided and grounded transmission lineOKI ELECTRIC IND CO LTD·Filed 2001·Granted Dec 3, 2002·28 cites·9 claims
- 0882USRE43958ESurface acoustic wave filter and saw filter packageINTELLECTUAL VENTURES FUND 77 LLC·Filed 2006·Granted Feb 5, 2013·13 cites·55 claims
- 0982US7479845B2Branching filter packageOKI ELECTRIC IND CO LTD·Filed 2005·Granted Jan 20, 2009·8 cites·16 claims
- 1079US7893794B2Branching filter packageOKI SEMICONDUCTOR CO LTD·Filed 2007·Granted Feb 22, 2011·6 cites·16 claims
- 1178US7017714B2Double deck elevatorTOSHIBA ELEVATOR KK·Filed 2003·Granted Mar 28, 2006·21 cites·10 claims
- 1278US6870440B2Saw branching filter with a branching filter circuit formed on the packageOKI ELECTRIC IND CO LTD·Filed 2001·Granted Mar 22, 2005·17 cites·13 claims
- 1372US7014013B2Guiding devices of elevatorTOSHIBA ELEVATOR KK·Filed 2005·Granted Mar 21, 2006·9 cites·12 claims
- 1471US6208223B1Receiving filter of a saw separator with greater electrode interdigitated width in first stage parallel resonatorOKI ELECTRIC IND CO LTD·Filed 1998·Granted Mar 27, 2001·25 cites·14 claims
- 1570US4612695AMethod of manufacturing a hollow cam shaftNIPPON PISTON RING CO LTD·Filed 1985·Granted Sep 23, 1986·22 cites·14 claims
- 1669US7178638B2Car door apparatus of elevatorTOSHIBA ELEVATOR KK·Filed 2005·Granted Feb 20, 2007·9 cites·10 claims
- 1768US7679472B2Branching filter packageOKI SEMICONDUCTOR CO LTD·Filed 2007·Granted Mar 16, 2010·3 cites·8 claims
- 1868US6640935B1Elevator having vibration damping to attenuate vibration transfer to an elevator cageTOSHIBA KK·Filed 1999·Granted Nov 4, 2003·25 cites·16 claims
- 1967US7602263B2Branching filter packageOKI SEMICONDUCTOR CO LTD·Filed 2007·Granted Oct 13, 2009·3 cites·13 claims
- 2067US6373350B1Branching filter with saw-resonator transmitting and receiving filters in separate packages and receiving-branch lines in both packagesOKI ELECTRIC IND CO LTD·Filed 1999·Granted Apr 16, 2002·20 cites·7 claims
- 2162US6336522B1Deck elevator car with speed controlTOSHIBA KK·Filed 2000·Granted Jan 8, 2002·20 cites·25 claims
- 2260US5007956AAssembled cam shaftNIPPON PISTON RING CO LTD·Filed 1988·Granted Apr 16, 1991·12 cites·4 claims
- 2359US8255187B2Remote monitoring diagnostic systemOOBA YOSHIKAZU·Filed 2008·Granted Aug 28, 2012·3 cites·3 claims
- 2456US4696696ASintered alloy having improved wear resistance propertyNIPPON PISTON RING CO LTD·Filed 1986·Granted Sep 29, 1987·10 cites·8 claims
- 2552US7090056B2Double deck elevator that controls a velocity change during inter-cage distance adjustmentTOSHIBA ELEVATOR KK·Filed 2003·Granted Aug 15, 2006·10 cites·14 claims
- 2651US7859362B2Branching filter packageOKI SEMICONDUCTOR CO LTD·Filed 2007·Granted Dec 28, 2010·0 cites·12 claims
- 2749US6902040B2Elevator carTOSHIBA KK·Filed 2001·Granted Jun 7, 2005·8 cites·16 claims
- 2843US6911878B2Acoustic wave branching filter having transmitting filter with optimal power handlingOKI ELECTRIC IND CO LTD·Filed 2002·Granted Jun 28, 2005·2 cites·11 claims
- 2938US7420440B2Transmitting filter including SAW resonatorsOKI ELECTRIC IND CO LTD·Filed 2004·Granted Sep 2, 2008·0 cites·8 claims
- 3037US4891972AUltrasonic joint inspection device and methodNIPPON PISTON RING CO LTD·Filed 1988·Granted Jan 9, 1990·5 cites·4 claims
- 3136US7243760B2Elevator door unit having mechanism to release lock unit manually in emergencyTOSHIBA ELEVATOR KK·Filed 2004·Granted Jul 17, 2007·0 cites·6 claims
- 3236US7034392B2DuplexerOKI ELECTRIC IND CO LTD·Filed 2004·Granted Apr 25, 2006·0 cites·2 claims
- 3335US2004222048A1Elevator systemFiled 2004·Application pending·0 cites
- 3431US4817420AMethod and device for examination of a joint of a ultrasonic joint inspection device and methodNIPPON PISTON RING CO LTD·Filed 1987·Granted Apr 4, 1989·1 cites·9 claims
- 3530US6119816AEmergency stop releasing method for elevatorTOSHIBA KK·Filed 1999·Granted Sep 19, 2000·0 cites·6 claims
- 3627US4730581AHollow cam shaftNIPPON PISTON RING CO LTD·Filed 1986·Granted Mar 15, 1988·4 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →