Assignee
ALPS ELECTRIC CO LTD
JP·3,920 granted patents·637 pending applications·66,115 citations·filing 1973–2018
Top patents by PatentIndex Score
4,557 records- 0199US6800825B1Switch deviceALPS ELECTRIC CO LTD·Filed 2003·Granted Oct 5, 2004·170 cites·4 claims
- 0299US6153062AMagnetoresistive sensor and headALPS ELECTRIC CO LTD·Filed 1998·Granted Nov 28, 2000·241 cites·15 claims
- 0398US7166813B2Multistep switch having capacitive type sensorALPS ELECTRIC CO LTD·Filed 2005·Granted Jan 23, 2007·93 cites·3 claims
- 0498US6589118B1Analog input device to input multi directional signalsALPS ELECTRIC CO LTD·Filed 2000·Granted Jul 8, 2003·1.1k cites·13 claims
- 0598US5693920ATwo-stage movement seesaw switch apparatusALPS ELECTRIC CO LTD·Filed 1995·Granted Dec 2, 1997·191 cites·14 claims
- 0697US7564935B2AGC circuit which is hard to be influenced by level of input signalALPS ELECTRIC CO LTD·Filed 2006·Granted Jul 21, 2009·57 cites·7 claims
- 0797US7433161B2Spin-valve element having fixed layer containing nano-oxide layerALPS ELECTRIC CO LTD·Filed 2005·Granted Oct 7, 2008·43 cites·20 claims
- 0897US7050276B2GMR magnetic sensing element having an antiferromagnetic layer extending beyond the track width and method for making the sameALPS ELECTRIC CO LTD·Filed 2003·Granted May 23, 2006·111 cites·15 claims
- 0997US7025482B2Light guide member and illuminating deviceALPS ELECTRIC CO LTD·Filed 2003·Granted Apr 11, 2006·127 cites·9 claims
- 1097US6952183B2Circularly-polarized-wave patch antenna which can be used in a wide frequency bandALPS ELECTRIC CO LTD·Filed 2003·Granted Oct 4, 2005·180 cites·10 claims
- 1197US6792889B2Plasma processing apparatus and method capable of performing uniform plasma treatment by control of excitation powerALPS ELECTRIC CO LTD·Filed 2003·Granted Sep 21, 2004·179 cites·19 claims
- 1297US6707649B2Magnetic sensing element permitting decrease in effective element size while maintaining large optical element sizeALPS ELECTRIC CO LTD·Filed 2002·Granted Mar 16, 2004·85 cites·18 claims
- 1397US6704005B2Input device which allows button input operation and coordinate input operation to be performed in the same operation planeALPS ELECTRIC CO LTD·Filed 2001·Granted Mar 9, 2004·173 cites·25 claims
- 1497US5869963AMagnetoresistive sensor and headALPS ELECTRIC CO LTD·Filed 1997·Granted Feb 9, 1999·102 cites·25 claims
- 1597US4806751ACode wheel for a reflective type optical rotary encoderALPS ELECTRIC CO LTD·Filed 1988·Granted Feb 21, 1989·167 cites·1 claims
- 1697US4727302ARear view mirror position control device of automobileALPS ELECTRIC CO LTD·Filed 1986·Granted Feb 23, 1988·175 cites·7 claims
- 1797US4725793AWaveguide-microstrip line converterALPS ELECTRIC CO LTD·Filed 1986·Granted Feb 16, 1988·145 cites·1 claims
- 1897US4700250AStructure for fixing floating type magnetic head to gimbal springALPS ELECTRIC CO LTD·Filed 1985·Granted Oct 13, 1987·86 cites·1 claims
- 1997USD288569SX-Y input deviceALPS ELECTRIC CO LTD·Filed 1984·Granted Mar 3, 1987·52 cites·1 claims
- 2096US7893921B2Input deviceALPS ELECTRIC CO LTD·Filed 2005·Granted Feb 22, 2011·69 cites·4 claims
- 2196US7589713B2Capacitive coordinate detection deviceALPS ELECTRIC CO LTD·Filed 2005·Granted Sep 15, 2009·54 cites·11 claims
- 2296US7527505B2Semiconductor device contact resistant to deterioration due to heat and method for manufacturing contactALPS ELECTRIC CO LTD·Filed 2007·Granted May 5, 2009·40 cites·6 claims
- 2396US7348898B2Capacitive input deviceALPS ELECTRIC CO LTD·Filed 2005·Granted Mar 25, 2008·69 cites·10 claims
- 2496US7343668B2Method of manufacturing perpendicular magnetic recording head capable of highly precisely defining gap distanceALPS ELECTRIC CO LTD·Filed 2006·Granted Mar 18, 2008·34 cites·10 claims
- 2596US7288732B2Multidirectional input deviceALPS ELECTRIC CO LTD·Filed 2006·Granted Oct 30, 2007·59 cites·13 claims
- 2696US6980403B2Magnetic sensing element with side shield layersALPS ELECTRIC CO LTD·Filed 2003·Granted Dec 27, 2005·90 cites·39 claims
- 2796US6806922B2Surface light-emitting device having light-guide panel wherein light radiated from exit surface is maximized proximate to normal direction of exit surfaceALPS ELECTRIC CO LTD·Filed 2002·Granted Oct 19, 2004·121 cites·16 claims
- 2896US6555770B2Composite operation switchALPS ELECTRIC CO LTD·Filed 2001·Granted Apr 29, 2003·1.4k cites·5 claims
- 2996US6356318B1Active-matrix liquid crystal display having storage capacitors of area smaller than that of pixel electrodesALPS ELECTRIC CO LTD·Filed 2000·Granted Mar 12, 2002·131 cites·22 claims
- 3096US6330132B1Magnetic head with high bonding strength of member for bonding head element and conductive pattern connected to external circuitALPS ELECTRIC CO LTD·Filed 2000·Granted Dec 11, 2001·71 cites·4 claims
- 3196US6025991AElectronic apparatus having heat dissipating arrangementALPS ELECTRIC CO LTD·Filed 1999·Granted Feb 15, 2000·134 cites·4 claims
- 3296US5869790ACoordinate input apparatus having orthogonal electrodes on opposite surfaces of a dielectric substrate and through-hole connections and manufacturing method thereofALPS ELECTRIC CO LTD·Filed 1996·Granted Feb 9, 1999·157 cites·14 claims
- 3396US4742221AOptical coordinate position input deviceALPS ELECTRIC CO LTD·Filed 1986·Granted May 3, 1988·108 cites·5 claims
- 3496US4698571APosition control apparatus for automobile driverALPS ELECTRIC CO LTD·Filed 1986·Granted Oct 6, 1987·129 cites·10 claims
- 3596US4607147AMembrane switchALPS ELECTRIC CO LTD·Filed 1984·Granted Aug 19, 1986·130 cites·5 claims
- 3696US4152669APhase locked loop with means for preventing locking at undesired frequenciesALPS ELECTRIC CO LTD·Filed 1977·Granted May 1, 1979·50 cites·5 claims
- 3795US9664576B2Load detector and electronic unit using the sameALPS ELECTRIC CO LTD·Filed 2015·Granted May 30, 2017·10 cites·10 claims
- 3895US7336254B2Shift register that suppresses operation failure due to transistor threshold variations, and liquid crystal driving circuit including the shift registerALPS ELECTRIC CO LTD·Filed 2005·Granted Feb 26, 2008·21 cites·11 claims
- 3995US6924732B2Camera for monitoring utilizing power line communicationALPS ELECTRIC CO LTD·Filed 2003·Granted Aug 2, 2005·155 cites·4 claims
- 4095US6781577B2Capacitive sensor-based input deviceALPS ELECTRIC CO LTD·Filed 2001·Granted Aug 24, 2004·127 cites·28 claims
- 4195US6750930B2Reflector providing particularly high reflectance in an intended viewing angle and reflection type liquid crystal display device using the sameALPS ELECTRIC CO LTD·Filed 2001·Granted Jun 15, 2004·53 cites·16 claims
- 4295US6687084B2Perpendicular magnetic recording head having main magnetic pole layer formed on high-flatness surface of yoke layer, and method of manufacturing the headALPS ELECTRIC CO LTD·Filed 2001·Granted Feb 3, 2004·51 cites·3 claims
- 4395US6652109B2Surface light emission device, method of manufacturing the same, and liquid crystal display deviceALPS ELECTRIC CO LTD·Filed 2001·Granted Nov 25, 2003·103 cites·18 claims
- 4495US6583777B2Active matrix type liquid crystal display device, and substrate for the sameALPS ELECTRIC CO LTD·Filed 2001·Granted Jun 24, 2003·70 cites·18 claims
- 4595US6284988B1Keyboard apparatus the operation side of which can be illuminatedALPS ELECTRIC CO LTD·Filed 2000·Granted Sep 4, 2001·88 cites·18 claims
- 4695US6230722B1Liquid feed nozzle, wet treatment, apparatus and wet treatment methodALPS ELECTRIC CO LTD·Filed 1998·Granted May 15, 2001·172 cites·11 claims
- 4795US5790106ACoordinate input apparatus with pen and finger input detectionALPS ELECTRIC CO LTD·Filed 1995·Granted Aug 4, 1998·356 cites·8 claims
- 4895US5784225AManufacturing method for magnetoresistive head having an antiferromagnetic layer of PTMNALPS ELECTRIC CO LTD·Filed 1997·Granted Jul 21, 1998·68 cites·8 claims
- 4995US5494362AThermal transfer printer and ink ribbon cassette for use in transfer printerALPS ELECTRIC CO LTD·Filed 1994·Granted Feb 27, 1996·102 cites·3 claims
- 5095US5466076AInk ribbon cassette for use in transfer printerALPS ELECTRIC CO LTD·Filed 1994·Granted Nov 14, 1995·102 cites·3 claims
Showing the top 50 of 4,557 patent records by PatentIndex Score.
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