Inventor
ATOKAWA MASAYUKI
JP22 patents
⚠️ This page may combine multiple inventors who share the name “ATOKAWA MASAYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MURATA MANUFACTURING CO
21 patentsUS6697605B1Feb 24, 2004
High-frequency circuit apparatus and communication apparatus
MURATA MANUFACTURING CO66 citations96
US6308051B1Oct 23, 2001
Antenna duplexer
MURATA MANUFACTURING CO56 citations96
US6522220B2Feb 18, 2003
Frequency variable filter, antenna duplexer, and communication apparatus incorporating the same
MURATA MANUFACTURING CO46 citations92
US6483399B1Nov 19, 2002
Duplexer and communication apparatus with first and second filters, the second filter having plural switch selectable saw filters
MURATA MANUFACTURING CO30 citations92
US6414566B1Jul 2, 2002
Frequency-characteristics variable filter, duplexer, and communication apparatus
MURATA MANUFACTURING CO19 citations92
US6307448B1Oct 23, 2001
Frequency-variable-type filter, antenna duplexer, and communication apparatus
MURATA MANUFACTURING CO27 citations92
US6288620B1Sep 11, 2001
Antenna-duplexer and communication apparatus
MURATA MANUFACTURING CO22 citations92
US6111482AAug 29, 2000
Dielectric variable-frequency filter having a variable capacitance connected to a resonator
MURATA MANUFACTURING CO24 citations92
US5604470AFeb 18, 1997
Duplexer having transmit and receive sections mounted on a single substrate
MURATA MANUFACTURING CO24 citations92
US6351195B1Feb 26, 2002
High frequency circuit device, antenna-sharing device, and communication apparatus having spaced apart ground electrodes
MURATA MANUFACTURING CO26 citations91
US6411176B1Jun 25, 2002
Voltage-controlled duplexer and communication apparatus
MURATA MANUFACTURING CO13 citations74
US6970056B2Nov 29, 2005
Filter assembly and communication apparatus
MURATA MANUFACTURING CO4 citations63
US6940364B2Sep 6, 2005
Dielectric filter, dielectric duplexer, and communication apparatus
MURATA MANUFACTURING CO2 citations63
US6885261B2Apr 26, 2005
Dielectric filter, antenna sharing device, and communication device having a voltage controlled reactance element for tuning the center frequency
MURATA MANUFACTURING CO3 citations62
US6590475B2Jul 8, 2003
Filter, antenna duplexer, and communication apparatus incorporating the same
MURATA MANUFACTURING CO2 citations62
US6545565B1Apr 8, 2003
Filter, antenna sharing device, and communication device
MURATA MANUFACTURING CO2 citations62
US6369668B1Apr 9, 2002
Duplexer and communication apparatus including the same
MURATA MANUFACTURING CO3 citations61
US7825752B2Nov 2, 2010
Dielectric filter having a dielectric block with input/output electrodes of a bent shape at corner portions of the block
MURATA MANUFACTURING CO0 citations39
US7760050B2Jul 20, 2010
Dielectric filter having tapered input/output electrodes
MURATA MANUFACTURING CO0 citations39
US7482898B2Jan 27, 2009
Dielectric filter, dielectric duplexer, and communication apparatus
MURATA MANUFACTURING CO0 citations39
US6963258B2Nov 8, 2005
Variable-frequency resonator circuit, variable-frequency filter, shared-antenna device, and communication device
MURATA MANUFACTURING CO0 citations36