Inventor
HIRAI TAKAMI
JP38 patents
⚠️ This page may combine multiple inventors who share the name “HIRAI TAKAMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK INSULATORS LTD
30 patentsUS6542050B1Apr 1, 2003
Transmitter-receiver
NGK INSULATORS LTD227 citations99
US5232765AAug 3, 1993
Distributed constant circuit board using ceramic substrate material
NGK INSULATORS LTD186 citations99
US5608364AMar 4, 1997
Layered stripline filter including inductive coupling adjustment strip
NGK INSULATORS LTD55 citations96
US6828881B2Dec 7, 2004
Stacked dielectric filter
NGK INSULATORS LTD190 citations95
US5576672ANov 19, 1996
Layered stripline filter including capacitive coupling electrodes
NGK INSULATORS LTD25 citations93
US5497130AMar 5, 1996
Layered transmission line filter with a capacitively coupled electrode in a layer opposing stripline resonators
NGK INSULATORS LTD27 citations93
US5374909ADec 20, 1994
Stripline filter having internal ground electrodes
NGK INSULATORS LTD31 citations93
US5373271ADec 13, 1994
Dielectric filter having coupling electrodes for connecting resonator electrodes, and method of adjusting frequency characteristic of the filter
NGK INSULATORS LTD42 citations93
US6563058B2May 13, 2003
Multilayered circuit board and method for producing the same
NGK INSULATORS LTD23 citations92
US6429829B1Aug 6, 2002
Antenna device
NGK INSULATORS LTD19 citations92
US6351239B1Feb 26, 2002
Electronic device in which integrated antenna and filter both have balanced terminals
NGK INSULATORS LTD26 citations92
US6294967B1Sep 25, 2001
Laminated type dielectric filter
NGK INSULATORS LTD44 citations92
US5448209ASep 5, 1995
Laminated dielectric filter
NGK INSULATORS LTD31 citations91
US6356244B1Mar 12, 2002
Antenna device
NGK INSULATORS LTD15 citations84
US5344695ASep 6, 1994
Dielectric filter having coupling electrodes for connecting resonator electrodes, and method of adjusting frequency characteristic of the filter
NGK INSULATORS LTD17 citations82
US6566988B2May 20, 2003
Stacked type dielectric resonator
NGK INSULATORS LTD9 citations74
US5556585ASep 17, 1996
Dielectric ceramic body including TIO2 dispersion in crystallized cordierite matrix phase, method of producing the same, and circuit board using the same
NGK INSULATORS LTD7 citations74
US5412358AMay 2, 1995
Layered stripline filter
NGK INSULATORS LTD11 citations74
US5262595ANov 16, 1993
Dielectric ceramic body including TiO2 dispersion in crystallized cordierite matrix phase, method of producing the same, and circuit board using the same
NGK INSULATORS LTD12 citations74
US5185304AFeb 9, 1993
Dielectric ceramic composition of BaO, TiO2, Nd2 O3, Sm2 O3 and Bi2 O3
NGK INSULATORS LTD12 citations74
US5182240AJan 26, 1993
Dielectric ceramic composition of BaO, TiO2,Nd2 O3, Sm2 3 and Al2 O3
NGK INSULATORS LTD7 citations74
US9012786B2Apr 21, 2015
Circuit board for high-capacity modules, and a production method of the circuit board
NGK INSULATORS LTD4 citations73
US6538534B2Mar 25, 2003
Stacked type dielectric filter
NGK INSULATORS LTD8 citations73
US6226423B1May 1, 2001
Optical waveguide element
NGK INSULATORS LTD11 citations73
US9247633B2Jan 26, 2016
Circuit board for peripheral circuits of high-capacity modules, and a high-capacity module including a peripheral circuit using the circuit board
NGK INSULATORS LTD2 citations63
US9064758B2Jun 23, 2015
High-capacity module including the peripheral circuit using the circuit board and the circuit board concerned for peripheral circuits of a high-capacity module
NGK INSULATORS LTD2 citations63
US8958215B2Feb 17, 2015
Circuit board for peripheral circuits of high-capacity modules, and a high-capacity module including a peripheral circuit using the circuit board
NGK INSULATORS LTD3 citations63
US6765459B2Jul 20, 2004
Laminated dielectric resonator and laminated dielectric filter
NGK INSULATORS LTD3 citations63
US8912106B2Dec 16, 2014
Glass-ceramic composite material
NGK INSULATORS LTD0 citations52
US5248465ASep 28, 1993
Preparation process of high-permittivity material
NGK INSULATORS LTD1 citations52