Inventor · disambiguated record
Ryoichi Takayama
Also filed as: TAKAYAMA RYOICHI
53 granted patents·3 pending applications·1,414 citations·filing 1981–2007
99Inventor score
Top patents by PatentIndex Score
56 records- 0195US7083270B2Piezoelectric element, ink jet head, angular velocity sensor, method for manufacturing the same, and ink jet recording apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Aug 1, 2006·51 cites·17 claims
- 0294US6347862B1Ink-jet headMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Feb 19, 2002·96 cites·20 claims
- 0393US7185540B2Piezoelectric element, ink jet head, angular velocity sensor, method for manufacturing the same, and ink jet recording apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2006·Granted Mar 6, 2007·26 cites·2 claims
- 0493US6341851B1Ink jet recording apparatus including a pressure chamber and pressure applying meansMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Jan 29, 2002·49 cites·5 claims
- 0592US6472953B1Band switching filter using a surface acoustic wave resonator and an antenna duplexer using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 29, 2002·62 cites·4 claims
- 0692US5844347ASaw device and its manufacturing methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Dec 1, 1998·77 cites·4 claims
- 0789US6969157B2Piezoelectric element, ink jet head, angular velocity sensor, method for manufacturing the same, and ink jet recording apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Nov 29, 2005·29 cites·15 claims
- 0888US7109828B2Surface acoustic wave device, and mobile communication device and sensor both using sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Sep 19, 2006·36 cites·51 claims
- 0988US6759924B2Multi-frequency antenna duplexerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Jul 6, 2004·37 cites·13 claims
- 1088US5333554AVehicle and method of producing the sameHITACHI LTD·Filed 1992·Granted Aug 2, 1994·64 cites·6 claims
- 1188US5098007AMethod of manufacturing a vehicle bodyHITACHI LTD·Filed 1990·Granted Mar 24, 1992·68 cites·12 claims
- 1287US7478558B2Piezoelectric element, ink jet head, angular velocity sensor, method for manufacturing the same, and ink jet recording apparatusPANASONIC CORP·Filed 2006·Granted Jan 20, 2009·8 cites·8 claims
- 1386US7498898B2Surface acoustic wave filter, and saw duplexerPANASONIC CORP·Filed 2005·Granted Mar 3, 2009·15 cites·8 claims
- 1485US6475604B1Thin film thermistor element and method for the fabrication of thin film thermistor elementMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Nov 5, 2002·16 cites·9 claims
- 1583US5674366AMethod and apparatus for fabrication of dielectric thin filmMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Oct 7, 1997·59 cites·12 claims
- 1683US5459635ALaminated thin film capacitor and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Oct 17, 1995·47 cites·4 claims
- 1782US6081182ATemperature sensor element and temperature sensor including the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Jun 27, 2000·37 cites·8 claims
- 1881US6554408B1Fluid ejection device and process for the production thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Apr 29, 2003·22 cites·20 claims
- 1980US4607186AUltrasonic transducer with a piezoelectric elementMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1982·Granted Aug 19, 1986·40 cites·21 claims
- 2078US7033001B2Piezoelectric element, ink jet head, angular velocity sensor, manufacturing method thereof, and ink jet type recording apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Apr 25, 2006·16 cites·8 claims
- 2177US5663089AMethod for producing a laminated thin film capacitorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Sep 2, 1997·45 cites·12 claims
- 2277US4458170AUltrasonic transmitter-receiverMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1981·Granted Jul 3, 1984·31 cites·3 claims
- 2376US8035460B2Surface acoustic wave device, surface acoustic wave filter and antenna duplexer using the same, and electronic equipment using the samePANASONIC CORP·Filed 2007·Granted Oct 11, 2011·8 cites·21 claims
- 2476US6688731B1Piezoelectric thin film element, ink jet recording head using such a piezoelectric thin film element, and their manufacture methodsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Feb 10, 2004·17 cites·16 claims
- 2576US5267515AVehicle body construction having longitudinally elongated extruded panels and continuous welds joining the panelsHITACHI LTD·Filed 1991·Granted Dec 7, 1993·37 cites·11 claims
- 2675US6361154B1Ink-jet head with piezoelectric actuatorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Mar 26, 2002·32 cites·6 claims
- 2772US6263734B1Piezoelectric acceleration sensor and method of detecting acceleration and manufacturing method thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Jul 24, 2001·31 cites·22 claims
- 2872US5488770AMethod of producing a vehicle bodyHITACHI LTD·Filed 1994·Granted Feb 6, 1996·31 cites·2 claims
- 2969US6891449B2Antenna duplexerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted May 10, 2005·13 cites·26 claims
- 3068US5755888AMethod and apparatus of forming thin filmsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted May 26, 1998·30 cites·6 claims
- 3167US7001014B2Piezoelectric thin film and method for preparation theof, and piezoelectric element having the piezoelectric thin film, ink-jet head using the piezoelectric element, and ink-jet recording device having the ink-jet headMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Feb 21, 2006·7 cites·14 claims
- 3265US5483067APyroelectric infrared detector and method of fabricating the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Jan 9, 1996·17 cites·8 claims
- 3360US5406445AThin film capacitor and method of manufacturing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Apr 11, 1995·27 cites·14 claims
- 3459US6014073ATemperature sensor element, temperature sensor having the same and method for producing the same temperature sensor elementMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Jan 11, 2000·26 cites·11 claims
- 3557US6909341B2Surface acoustic wave filter utilizing a layer for preventing grain boundary diffusionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Jun 21, 2005·7 cites·61 claims
- 3655US5868948AMethod for fabricating dielectric deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Feb 9, 1999·19 cites·17 claims
- 3755US5866238AFerroelectric thin film device and its processMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Feb 2, 1999·15 cites·28 claims
- 3854US6105225AMethod of manufacturing a thin film sensor elementMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Aug 22, 2000·13 cites·22 claims
- 3954US5672252AMethod and apparatus for fabrication of dielectric filmMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Sep 30, 1997·16 cites·13 claims
- 4053US5308462AProcess for producing a ferroelectric film deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted May 3, 1994·15 cites·8 claims
- 4152US6326621B1Infrared radiation detector and method of manufacturing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Dec 4, 2001·18 cites·6 claims
- 4252US5281818APyro-electric type infrared detectorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Jan 25, 1994·17 cites·1 claims
- 4350US7024738B2Method for controlling a direction of polarization of a piezoelectric thin filmMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Apr 11, 2006·4 cites·2 claims
- 4449US5876504AProcess for producing oxide thin films and chemical vapor deposition apparatus used thereforMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Mar 2, 1999·13 cites·3 claims
- 4549US5413667APyroelectric infrared detector fabricating methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted May 9, 1995·7 cites·9 claims
- 4649US4456849APiezoelectric ultrasonic transducer with damped suspensionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1982·Granted Jun 26, 1984·12 cites·13 claims
- 4748US5521454ASurface wave filter elementMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted May 28, 1996·9 cites·16 claims
- 4847US5717157AFerroelectric thin film and method of manufacturing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Feb 10, 1998·13 cites·8 claims
- 4946US2005280335A1Piezoelectric element, ink jet head, angular velocity sensor, method for manufacturing the same, and ink jet recording apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Application pending·0 cites
- 5043US5612536AThin film sensor element and method of manufacturing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Mar 18, 1997·7 cites·9 claims
Showing the top 50 of 56 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Ryoichi Takayama 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 →