Yamakawa; Takehiko

Patent Applications and Registrations

Patent applications and USPTO patent grants for Yamakawa; Takehiko.The latest application filed is for "power converter apparatus converting input power into output power having output voltage over wide range with higher efficiency".

Company Profile

3.39.53

Yamakawa; Takehiko - Osaka JP
Yamakawa; Takehiko - Suita JP
Yamakawa; Takehiko - Toyonaka JP
Yamakawa; Takehiko - Toyonaki JP
Yamakawa, Takehiko - Toyonaka-shi JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Electromagnetic relay and control method thereof Grant 11,373,828 - Kato , et al. June 28, 2	2022-06-28
Power Converter Apparatus Converting Input Power Into Output Power Having Output Voltage Over Wide Range With Higher Efficiency App 20220166329 - KATO; Akira ; et al.	2022-05-26
Electromagnetic Relay And Control Method Thereof App 20210217571 - KATO; Akira ; et al.	2021-07-15
Electromagnetic Relay App 20210027964 - YAMAKAWA; Takehiko ; et al.	2021-01-28
Magnetic Device Including Winding And Insulators, And Power Conversion Device Using The Same App 20200357549 - NAKAGAWA; Yoshitake ; et al.	2020-11-12
Resonant power converter Grant 10,186,977 - Yamaoka , et al. Ja	2019-01-22
Electric Power Conversion Device App 20180269796 - YAMAOKA; Masahiro ; et al.	2018-09-20
Coil structure, transformer, and power converter Grant 9,852,841 - Sakiyama , et al. December 26, 2	2017-12-26
Rotary Machine Including Rotor, Stator, And Insertion Member App 20170338700 - KATO; AKIRA ; et al.	2017-11-23
Equations for an LLC converter having increased power output capabilities Grant 9,705,409 - Yamaoka , et al. July 11, 2	2017-07-11
Magnetic component and power transfer device Grant 9,672,974 - Sakiyama , et al. June 6, 2	2017-06-06
Magnetic Device Including Winding And Insulators, And Power Conversion Device Using The Same App 20160365804 - NAKAGAWA; YOSHITAKE ; et al.	2016-12-15
Electric Power Conversion Device App 20160261195 - YAMAOKA; MASAHIRO ; et al.	2016-09-08
Vibration power generator Grant 9,407,172 - Yamakawa , et al. August 2, 2	2016-08-02
Power Converter App 20160172982 - YAMAOKA; MASAHIRO ; et al.	2016-06-16
Magnetic Component And Power Transfer Device App 20160148751 - SAKIYAMA; KAZUYUKI ; et al.	2016-05-26
Coil Structure And Power Source Device App 20150357116 - YAMAKAWA; TAKEHIKO ; et al.	2015-12-10
Coil Structure, Transformer, And Power Converter App 20150213948 - SAKIYAMA; KAZUYUKI ; et al.	2015-07-30
Vibration Power Generator App 20140339954 - YAMAKAWA; Takehiko ; et al.	2014-11-20
Vibration Power Generator App 20140111061 - YAMAKAWA; Takehiko ; et al.	2014-04-24
Resonator and production method thereof Grant 8,698,257 - Kamiyama , et al. April 15, 2	2014-04-15
Vibration Power Generator App 20140070664 - Yamakawa; Takehiko ; et al.	2014-03-13
Vibration Power Generator, Rotating Body And Communication Device App 20140055002 - Nakatsuka; Hiroshi ; et al.	2014-02-27
Oscillator with MEMS resonator Grant 8,570,112 - Yamakawa , et al. October 29, 2	2013-10-29
Oscillator Grant 8,525,605 - Yamakawa , et al. September 3, 2	2013-09-03
MEMS pressure sensor Grant 8,516,905 - Nakamura , et al. August 27, 2	2013-08-27
Oscillator App 20130147567 - Yamakawa; Takehiko ; et al.	2013-06-13
Mems Pressure Sensor App 20130047746 - Nakamura; Kunihiko ; et al.	2013-02-28
High-frequency filter Grant 8,306,499 - Yamakawa , et al. November 6, 2	2012-11-06
Filter device having attenuation poles Grant 8,289,103 - Yamakawa , et al. October 16, 2	2012-10-16
Oscillator App 20120182077 - Yamakawa; Takehiko ; et al.	2012-07-19
Resonator And Production Method Thereof App 20120091547 - Kamiyama; Tomohide ; et al.	2012-04-19
Micromachine switch, filter circuit, duplexer circuit, and communication device Grant 8,022,794 - Nakatsuka , et al. September 20, 2	2011-09-20
Frequency-variable acoustic thin film resonator, filter and communication apparatus using the same Grant 7,986,198 - Nakatsuka , et al. July 26, 2	2011-07-26
Film bulk acoustic wave resonator and method for manufacturing the same Grant 7,893,793 - Iwasaki , et al. February 22, 2	2011-02-22
Piezoelectric resonator having a spurious component control layer, filter using the piezoelectric resonator, and duplexer using the piezoelectric resonator Grant RE42,009 - Nakatsuka , et al. December 28, 2	2010-12-28
High-frequency Filter App 20100291946 - Yamakawa; Takehiko ; et al.	2010-11-18
Dual mode piezoelectric filter, method of manufacturing the same, high frequency circuit component and communication device using the same Grant 7,719,390 - Iwasaki , et al. May 18, 2	2010-05-18
Piezoelectric resonator, piezoelectric filter, and duplexer and communication device using the same Grant 7,675,389 - Yamakawa , et al. March 9, 2	2010-03-09
Piezoelectric filter, antenna duplexer, and communications apparatus employing piezoelectric resonator Grant 7,639,103 - Yamakawa , et al. December 29, 2	2009-12-29
Filter Device App 20090315643 - Yamakawa; Takehiko ; et al.	2009-12-24
Device including piezoelectric thin film and a support having a vertical cross-section with a curvature Grant 7,623,007 - Nakatsuka , et al. November 24, 2	2009-11-24
Micromachine Switch, Filter Circuit, Duplexer Circuit, And Communication Device App 20090277762 - Nakatsuka; Hiroshi ; et al.	2009-11-12
Frequency-variable Acoustic Thin Film Resonator, Filter And Communication Apparatus Using The Same App 20090273416 - Nakatsuka; Hiroshi ; et al.	2009-11-05
Piezoelectric Device And Method Of Manufacturing Piezoelectric Resonators App 20090133237 - ONISHI; Keiji ; et al.	2009-05-28
Filter using piezoelectric resonator Grant 7,479,847 - Yamakawa , et al. January 20, 2	2009-01-20
Piezoelectric resonator, method of manufacturing piezoelectric resonator, and filter, duplexer, and communication device using piezoelectric resonator Grant 7,477,115 - Nakatsuka , et al. January 13, 2	2009-01-13
Piezoelectric Resonator, Piezoelectric Filter, and Duplexer and Communication Device Using the Same App 20080290969 - Yamakawa; Takehiko ; et al.	2008-11-27
Dual Mode Piezoelectric Filter, Method Of Manufacturing The Same, High Frequency Circuit Component And Communication Device Using The Same App 20080180193 - IWASAKI; Tomohiro ; et al.	2008-07-31
Piezoelectric Filter, and Duplexer and Communications Apparatus Using the Same App 20080116993 - Yamakawa; Takehiko ; et al.	2008-05-22
Film Bulkacoustic Wave Resonator And Method For Manufacturing The Same App 20080051039 - IWASAKI; Tomohiro ; et al.	2008-02-28
Piezoelectric filter, antenna duplexer, and communications apparatus employing piezoelectric resonator App 20070296523 - Yamakawa; Takehiko ; et al.	2007-12-27
Piezoelectric resonator filter Grant 7,301,420 - Yamaguchi , et al. November 27, 2	2007-11-27
Electronic device, method for producing the same, and communication apparatus including the same App 20070200146 - Onishi; Keiji ; et al.	2007-08-30
Piezoelectric resonator, filter, and duplexer Grant 7,259,498 - Nakatsuka , et al. August 21, 2	2007-08-21
Piezoelectric device, antenna duplexer, and method of manufacturing piezoelectric resonators used therefor Grant 7,242,130 - Nakamura , et al. July 10, 2	2007-07-10
Thin film bulk acoustic resonator, method for producing the same, filter, composite electronic component device, and communication device Grant 7,230,511 - Onishi , et al. June 12, 2	2007-06-12
Piezoelectric resonator, production method thereof, filter, duplexer, and communication device Grant 7,230,367 - Yamaguchi , et al. June 12, 2	2007-06-12
Filter using piezoelectric resonator App 20070109073 - Yamakawa; Takehiko ; et al.	2007-05-17
Complex RF device and method for manufacturing the same App 20070093229 - Yamakawa; Takehiko ; et al.	2007-04-26
Piezoelectric resonator and method for producing the same App 20070090725 - Kamiyama; Tomohide ; et al.	2007-04-26
Device including piezoelectric thin film and method for producing the same App 20070085633 - Nakatsuka; Hiroshi ; et al.	2007-04-19
Piezoelectric device and method of manufacturing piezoelectric resonators App 20070046157 - Onishi; Keiji ; et al.	2007-03-01
Piezoelectric resonator, method of manufacturing piezoelectric resonator, and filter, duplexer, and communication device using piezoelectric resonator App 20070001781 - Nakatsuka; Hiroshi ; et al.	2007-01-04
Filter using piezoelectric resonator Grant 7,138,888 - Yamakawa , et al. November 21, 2	2006-11-21
Piezoelectric resonator, method of manufacturing piezoelectric resonator, and filter, duplexer, and communication device using piezoelectric resonator Grant 7,113,055 - Nakatsuka , et al. September 26, 2	2006-09-26
Dielectric resonator, dielectric filter, and method of supporting dielectric resonance element Grant 7,106,152 - Yamakawa , et al. September 12, 2	2006-09-12
Multilayer electronic component and communication apparatus and method Grant 7,054,608 - Yamakawa , et al. May 30, 2	2006-05-30
In-band-flat-group-delay type dielectric filter and linearized amplifier using the same Grant 6,995,636 - Yamakawa , et al. February 7, 2	2006-02-07
RF device and communication apparatus using the same Grant 6,985,712 - Yamakawa , et al. January 10, 2	2006-01-10
Filter using piezoelectric resonator App 20050110596 - Yamakawa, Takehiko ; et al.	2005-05-26
Piezoelectric resonator, production method thereof, filter, duplexer, and communication device App 20050099093 - Yamaguchi, Hiroshi ; et al.	2005-05-12
Piezoelectric resonator, method of manufacturing piezoelectric resonator, and filter, duplexer, and communication device using piezoelectric resonator App 20050099245 - Nakatsuka, Hiroshi ; et al.	2005-05-12
Piezoelectric device, antenna duplexer, and method of manufacturing piezoelectric resonators used therefor App 20050099092 - Nakamura, Hiroyuki ; et al.	2005-05-12
Thin film bulk acoustic resonator, method for producing the same, filter, composite electronic component device, and communication device App 20050057324 - Onishi, Keiji ; et al.	2005-03-17
Piezoelectric resonator, filter, and duplexer App 20050057117 - Nakatsuka, Hiroshi ; et al.	2005-03-17
Dielectric resonator, dielectric filter, and method of supporting dielectric resonance element App 20050030131 - Yamakawa, Takehiko ; et al.	2005-02-10
In-band-flat-group-delay type dielectric filter and linearized amplifier using the same Grant 6,794,959 - Yamakawa , et al. September 21, 2	2004-09-21
In-band-flat-group-delay type dielectric filter and linearized amplifier using the same App 20040145432 - Yamakawa, Takehiko ; et al.	2004-07-29
Resonator, filter, communication apparatus, resonator manufacturing method and filter manufacturing method App 20040130412 - Yamakawa, Takehiko ; et al.	2004-07-08
Dielectric filter Grant 6,707,353 - Yamakawa , et al. March 16, 2	2004-03-16
Dielectric filter, communication apparatus, and method of controlling resonance frequency App 20040041661 - Yamakawa, Takehiko ; et al.	2004-03-04
Dielectric filter App 20040036557 - Yamakawa, Takehiko ; et al.	2004-02-26
RF device and communication apparatus using the same App 20030068998 - Yamakawa, Takehiko ; et al.	2003-04-10
In-band-flat-group-delay type dielectric filter and linearized amplifier using the same App 20030052751 - Yamakawa, Takehiko ; et al.	2003-03-20
Multilayer electronic component and communication apparatus and method App 20020119764 - Yamakawa, Takehiko ; et al.	2002-08-29

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