Inventor · disambiguated record
Takashi Yumura
Also filed as: YUMURA TAKASHI
43 granted patents·4 pending applications·894 citations·filing 1986–2006
98Inventor score
Top patents by PatentIndex Score
47 records- 0197US6554107B2Elevator systemMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Apr 29, 2003·67 cites·16 claims
- 0297US5463202ALaser machining apparatus and methodMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Oct 31, 1995·164 cites·25 claims
- 0393US7228943B2Elevator apparatus with position correction for overspeed detectionMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Jun 12, 2007·46 cites·4 claims
- 0493US5079660AMagnetic head suspension assembly for reducing vibration effectsMITSUBISHI ELECTRIC CORP·Filed 1989·Granted Jan 7, 1992·64 cites·1 claims
- 0587US7918320B2Emergency stop system for elevatorMITSUBISHI ELECTRIC CORP·Filed 2005·Granted Apr 5, 2011·18 cites·13 claims
- 0687US6832678B2Escalator with high speed inclined sectionMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Dec 21, 2004·30 cites·7 claims
- 0786US6474449B1Elevator and guide device for elevatorMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Nov 5, 2002·29 cites·15 claims
- 0885US7992687B2Device for elevator door control based on a detected objectMITSUBISHI ELECTRIC CORP·Filed 2006·Granted Aug 9, 2011·15 cites·10 claims
- 0985US4740946AData converter pickup carriage assemblyMITSUBISHI ELECTRIC CORP·Filed 1986·Granted Apr 26, 1988·49 cites·8 claims
- 1084US7540358B2Elevator apparatus including main and auxiliary sensorsMITSUBISHI ELECTRIC CORP·Filed 2004·Granted Jun 2, 2009·24 cites·20 claims
- 1182US7950499B2Control apparatus for an elevator responsive to car-mounted position detectorsMITSUBISHI ELECTRIC CORP·Filed 2005·Granted May 31, 2011·14 cites·6 claims
- 1282US5628385AElevator overspeed protection apparatusMITSUBISHI ELECTRIC CORP·Filed 1995·Granted May 13, 1997·38 cites·15 claims
- 1379US6227334B1Elevator governor checking and adjusting methodMITSUBISHI ELECTRIC CORP·Filed 2000·Granted May 8, 2001·25 cites·15 claims
- 1478US6345696B1Elevator speed governorMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Feb 12, 2002·20 cites·14 claims
- 1576US7784590B2Elevator operation control deviceMITSUBISHI ELECTRIC CORP·Filed 2006·Granted Aug 31, 2010·11 cites·12 claims
- 1674US6333865B1Power supplying device for plural car elevatorMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Dec 25, 2001·18 cites·6 claims
- 1772US7287626B2Buffer device for elevatorMITSUBISHI ELECTRIC CORP·Filed 2006·Granted Oct 30, 2007·8 cites·3 claims
- 1870US7007774B2Active horizontal vibration reducing device for elevatorMITSUBISHI ELECTRIC CORP·Filed 2003·Granted Mar 7, 2006·15 cites·7 claims
- 1970US6003636ASafety apparatus for elevatorMITSUBISHI ELECTRIC CORP·Filed 1997·Granted Dec 21, 1999·26 cites·16 claims
- 2070US5099352AReflector oscillating apparatusMITSUBISHI ELECTRIC CORP·Filed 1990·Granted Mar 24, 1992·35 cites·4 claims
- 2166US5339208AAssembly for supporting a magnetic head to float relative to a magnetic diskMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Aug 16, 1994·16 cites·9 claims
- 2266US4862441ACarriage assemblyMITSUBISHI ELECTRIC CORP·Filed 1987·Granted Aug 29, 1989·14 cites·11 claims
- 2363US4910486AElectromagnetic drive actuatorMITSUBISHI ELECTRIC CORP·Filed 1989·Granted Mar 20, 1990·14 cites·15 claims
- 2462US7775326B2Elevator apparatusMITSUBISHI ELECTRIC CORP·Filed 2006·Granted Aug 17, 2010·5 cites·2 claims
- 2562US6591945B1Self propelled elevatorMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Jul 15, 2003·11 cites·11 claims
- 2662US4823219ACarriage recording head sandwiched by electromagnetic coil sectionsMITSUBISHI ELECTRIC CORP·Filed 1987·Granted Apr 18, 1989·13 cites·7 claims
- 2761US6588573B1Escalator with high speed inclined sectionMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Jul 8, 2003·12 cites·7 claims
- 2859US6786304B2Guide for elevatorMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Sep 7, 2004·10 cites·6 claims
- 2958US6763917B2Elevator vibration reduction apparatus including a dead band filterMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Jul 20, 2004·9 cites·18 claims
- 3056US7823705B2Elevator apparatus control by measuring changes in a physical quantity other than temperatureMITSUBISHI ELECTRIC CORP·Filed 2005·Granted Nov 2, 2010·3 cites·6 claims
- 3156US6591959B1Escalator with high speed inclinded sectionMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Jul 15, 2003·9 cites·4 claims
- 3256US6497380B2Drum winding apparatusMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Dec 24, 2002·6 cites·17 claims
- 3356US5130873AHead positioning apparatus for disc unitMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Jul 14, 1992·10 cites·13 claims
- 3453US6796416B2High-speed escalator for slopeMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Sep 28, 2004·7 cites·3 claims
- 3552US7703578B2Elevator apparatusMITSUBISHI ELECTRIC CORP·Filed 2004·Granted Apr 27, 2010·6 cites·8 claims
- 3650US4961118ADocument scanner driven by electromagnetic actuatorsMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Oct 2, 1990·10 cites·6 claims
- 3747US7104386B2Sloped part high-speed escalatorMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Sep 12, 2006·5 cites·4 claims
- 3842US7124875B2Escalator with high speed inclined sectionMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Oct 24, 2006·2 cites·8 claims
- 3942US5105419ACarriage assemblyMITSUBISHI ELECTRIC CORP·Filed 1990·Granted Apr 14, 1992·5 cites·1 claims
- 4042US2010018810A1Elevator apparatusMITSUBISHI ELECTRIC CORP·Filed 2006·Application pending·0 cites
- 4140US2006249334A1Buffer device for elevatorMITSUBISHI ELECTRIC CORP·Filed 2006·Application pending·0 cites
- 4237US5027340AObject lens head assemblyMITSUBISHI ELECTRIC CORP·Filed 1989·Granted Jun 25, 1991·3 cites·5 claims
- 4337US2007170005A1Machine room-less elevatorMITSUBISHI ELECTRIC CORP·Filed 2005·Application pending·0 cites
- 4435US4819109ASlidable carriage mount for disc memory apparatusMITSUBISHI ELECTRIC CORP·Filed 1986·Granted Apr 4, 1989·3 cites·7 claims
- 4535US2003217895A1Buffer device for elevatorMITSUBISHI ELECTRIC CORP·Filed 2003·Application pending·0 cites
- 4634US4819106AHead positioning assembly for magnetic disc apparatusMITSUBISHI ELECTRIC CORP·Filed 1987·Granted Apr 4, 1989·3 cites·3 claims
- 4726US4943147AChopping secondary mirror systemMIZUNO SHIGEKI·Filed 1989·Granted Jul 24, 1990·2 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →