Inventor
KAWAI KUNIHIRO
JP20 patents
⚠️ This page may combine multiple inventors who share the name “KAWAI KUNIHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KAWAI KUNIHIRO
10 patentsUS8106727B2Jan 31, 2012
Variable resonator, tunable filter, and electric circuit device
KAWAI KUNIHIRO17 citations92
US8294537B2Oct 23, 2012
Variable resonator, variable bandwidth filter, and electric circuit device
KAWAI KUNIHIRO12 citations84
US8648666B2Feb 11, 2014
Multimode frontend circuit
KAWAI KUNIHIRO4 citations73
US8760244B2Jun 24, 2014
Multirole circuit element capable of operating as variable resonator or transmission line and variable filter incorporating the same
KAWAI KUNIHIRO2 citations62
US8330562B2Dec 11, 2012
Variable resonator, tunable filter, and electric circuit device
KAWAI KUNIHIRO2 citations62
US8324988B2Dec 4, 2012
Variable resonator, tunable bandwidth filter, and electric circuit device
KAWAI KUNIHIRO4 citations62
US8125302B2Feb 28, 2012
Signal selecting device
KAWAI KUNIHIRO2 citations62
US8581677B2Nov 12, 2013
Variable resonator, variable bandwidth filter, and electric circuit device
KAWAI KUNIHIRO0 citations52
US8773223B2Jul 8, 2014
Variable resonator and variable filter
KAWAI KUNIHIRO0 citations41
US8138852B2Mar 20, 2012
Duplexer and transceiver
KAWAI KUNIHIRO0 citations41
NTT DOCOMO INC
10 patentsUS7583168B2Sep 1, 2009
Resonator
NTT DOCOMO INC26 citations92
US6963758B2Nov 8, 2005
High-sensitivity wireless receiving device and high-frequency unit used therefor
NTT DOCOMO INC23 citations92
US7573356B2Aug 11, 2009
Tunable filter
NTT DOCOMO INC13 citations84
US9337990B2May 10, 2016
Front-end circuit and impedance adjustment method
NTT DOCOMO INC7 citations83
US7825754B2Nov 2, 2010
Variable resonator
NTT DOCOMO INC7 citations74
US7292124B2Nov 6, 2007
Variable resonator and variable phase shifter
NTT DOCOMO INC9 citations74
US8564384B2Oct 22, 2013
Variable resonator, tunable bandwidth filter, and electric circuit device
NTT DOCOMO INC4 citations63
US7307045B2Dec 11, 2007
Signal switching device
NTT DOCOMO INC3 citations62
US9356644B2May 31, 2016
Wireless circuit and frequency pair determination method
NTT DOCOMO INC1 citations51
US7774034B2Aug 10, 2010
Signal switching device
NTT DOCOMO INC0 citations51