Inventor

Kazuyuki Sakiyama

Inventor

Osaka, JP

Overview

42→

Patents

1994–2017

Patent span

Electricity

Primary field (CPC H)

Patents· 42 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H01Pprimary

H01PWaveguides25%

H01QAntennas, i.e. radio aerials11%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems8%

H03HImpedance networks, e.g. resonant circuits6%

H04BTransmission6%

H05KPrinted circuits6%

H01FMagnets5%

H01JElectric discharge tubes or discharge lamps5%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications5%

B60LPropulsion of electrically-propelled vehicles3%

PatentTitleYear

9,852,841Coil structure, transformer, and power converter2017 9,755,539'AC/DC/AC conversion device with reduced switching noise'2017 9,672,974'Magnetic component and power transfer device'2017 9,667,171'Switching circuit, power converter, and control method'2017 9,667,153'Switching power supply apparatus for generating control signal for lowering switching frequency of switching devices'2017 9,660,546'Coil structure and power converter'2017 8,421,678'Antenna apparatus provided with radiation conductor with notched portion'2013 8,294,531'Microstrip line provided with conductor section having groove formed to sterically intersect strip conductor'2012 7,764,861'Photonic crystal device'2010 7,675,387'Surface acoustic wave device and communication terminal using the same'2010 7,574,098'Photonic crystal device'2009 7,518,462'Transmission line pair having a plurality of rotational-direction reversal structures'2009 7,499,678'Antenna sharing device and wireless communication terminal using the same'2009 7,495,523'Differential transmission line having curved section with reduced line width'2009 7,482,993'Variable-directivity antenna'2009 7,466,214'Resonator'2008 7,429,902'Differential transmission line having a curved region with selected radius of curvature'2008 7,414,201'Transmission line pair'2008 7,415,321'Robot controller'2008 7,403,080'Transmission line apparatus having conductive strips coupled by at least one additional capacitance element'2008 7,397,439'Slot antenna'2008 7,369,020'Transmission line comprising a plurality of serially connected rotational direction-reversal structures'2008 7,301,418'Differential transmission line having curved differential conductors and ground plane slots'2007 7,280,736'Photonic crystal device'2007 7,250,909'Antenna and method of making the same'2007 7,209,083'Radio-frequency device'2007 7,183,888'High-frequency circuit'2007 7,183,883'RF circuit component and RF circuit'2007 7,164,332'Resonator'2007 7,151,423'Demultiplexer and multiplexer'2006 7,046,198'Antenna and apparatus provided with the antenna'2006 6,766,149'Mobile radio terminal and surface acoustic wave antenna duplexer'2004 6,525,624'Band-switchable surface acoustic wave antenna duplexer and mobile radio terminal'2003 6,518,703'Electrodeless discharge energy supply apparatus and electrodeless discharge lamp device using surface wave transmission line'2003 6,249,006'Electromagnetic field shielding device'2001 6,049,170'High frequency discharge energy supply means and high frequency electrodeless discharge lamp device'2000 6,047,306'CDMA communication RF signal processing apparatus using SAW'2000 5,781,020'Method of calculating an impedance of an electromagnetic part to which rotational body shape approximation is applied, and an apparatus for the same'1998 5,666,091'Structure of surface acoustic wave filter'1997 5,604,059'Mask structure having phase shifting pattern suitable for forming fine pattern on photosensitive film and method of manufacturing solid-state devices using such mask structure'1997 5,315,233'Electromagnetic field analyzer for devices in which an electromagnetic field is present near a conductor and an electric charge moves in the electromagnetic field, and method of analyzing an electromagnetic field'1994 5,307,291'Instrument for analysis of levitation of rapidly moving structure such as a magnetic tape across an air gap'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–2008Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (21)· patent assignee history

1997–2010Patents assigned to HITACHI MEDIA ELECTRON KK (5)· patent assignee history

1997–2000Patents assigned to HITACHI LTD (2)· patent assignee history

1997–2010Based in Chigasaki, JP· patent location history

1998–2003Based in Shijyonawate, JP· patent location history

2000–2010Based in Shijonawate, JP· patent location history

2001–2017Based in Osaka, JP· patent location history

2003–2004Based in Mizusawa, JP· patent location history

2008–2013Patents assigned to PANASONIC CORP (8)· patent assignee history

2017Patents assigned to PANASONIC IP MAN CO LTD (6)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD	21	1994–2008
PANASONIC CORP	8	2008–2013
PANASONIC IP MAN CO LTD	6	2017
HITACHI MEDIA ELECTRON KK	5	1997–2010
HITACHI LTD	2	1997–2000

Locations

Location	Patents	Span
Osaka, JP	19	2001–2017
Shijonawate, JP	12	2000–2010
Chigasaki, JP	5	1997–2010
Mizusawa, JP	2	2003–2004
Shijyonawate, JP	2	1998–2003