Inventor
HIKITA MITSUTAKA
JP32 patents
⚠️ This page may combine multiple inventors who share the name “HIKITA MITSUTAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
17 patentsUS5438305AAug 1, 1995
High frequency module including a flexible substrate
HITACHI LTD106 citations96
US5202652AApr 13, 1993
Surface acoustic wave filter device formed on a plurality of piezoelectric substrates
HITACHI LTD94 citations95
US5115216AMay 19, 1992
Surface acoustic wave filter including saw resonators with transmission spaces therein
HITACHI LTD38 citations92
US4492940AJan 8, 1985
Acoustic surface-wave bandpass filter
HITACHI LTD31 citations92
US4468642AAug 28, 1984
Band pass filter device
HITACHI LTD41 citations92
US5604059AFeb 18, 1997
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
HITACHI LTD34 citations89
US5422615AJun 6, 1995
High frequency circuit device
HITACHI LTD51 citations89
US5010269AApr 23, 1991
SAW resonator having a broad bandwidth
HITACHI LTD39 citations89
US6047306AApr 4, 2000
CDMA communication RF signal processing apparatus using SAW
HITACHI LTD19 citations84
US4734664AMar 29, 1988
Surface acoustic wave resonator
HITACHI LTD22 citations80
US4365220ADec 21, 1982
Surface wave circuit device
HITACHI LTD10 citations74
US5065065ANov 12, 1991
Surface acoustic wave device
HITACHI LTD14 citations73
US4507581AMar 26, 1985
Electrode structure for saw device
HITACHI LTD11 citations73
US4263571AApr 21, 1981
Surface acoustic wave filter
HITACHI LTD18 citations73
US4490641ADec 25, 1984
Three electrode piezoelectric ceramic resonator
HITACHI LTD14 citations71
US5087901AFeb 11, 1992
Surface acoustic wave band-pass filter with different phase weighted transducers
HITACHI LTD6 citations62
US5235234AAug 10, 1993
Surface acoustic wave device
HITACHI LTD1 citations51
HITACHI MEDIA ELECTRON KK
11 patentsUS6766149B1Jul 20, 2004
Mobile radio terminal and surface acoustic wave antenna duplexer
HITACHI MEDIA ELECTRON KK73 citations97
US6714099B2Mar 30, 2004
Radio frequency filter, radio frequency circuit, antenna duplexer and radio terminal
HITACHI MEDIA ELECTRON KK74 citations97
US6525624B1Feb 25, 2003
Band-switchable surface acoustic wave antenna duplexer and mobile radio terminal
HITACHI MEDIA ELECTRON KK62 citations95
US7221242B2May 22, 2007
Bulk acoustic wave resonator and manufacturing method thereof, filter using the same, semiconductor integrated circuit device using the same, and high frequency module using the same
HITACHI MEDIA ELECTRON KK22 citations92
US5814917ASep 29, 1998
Surface acoustic wave equipment
HITACHI MEDIA ELECTRON KK26 citations92
US5666091ASep 9, 1997
Structure of surface acoustic wave filter
HITACHI MEDIA ELECTRON KK34 citations92
US7561010B2Jul 14, 2009
Piezoelectric thin film resonators
HITACHI MEDIA ELECTRON KK19 citations84
US7408287B2Aug 5, 2008
Film bulk acoustic wave resonator, film bulk acoustic wave resonator filter and method of manufacturing film bulk acoustic wave resonator
HITACHI MEDIA ELECTRON KK11 citations84
US7385464B2Jun 10, 2008
Resonator type filter
HITACHI MEDIA ELECTRON KK13 citations84
US7659795B2Feb 9, 2010
Antenna duplexer and wireless terminal using the same
HITACHI MEDIA ELECTRON KK11 citations83
US7499678B2Mar 3, 2009
Antenna sharing device and wireless communication terminal using the same
HITACHI MEDIA ELECTRON KK12 citations83
HITACHI ELECTRONICS
3 patentsUS4792939ADec 20, 1988
Duplex radio communication transceiver
HITACHI ELECTRONICS92 citations94
US6346761B1Feb 12, 2002
Surface acoustic wave device capable of suppressing spurious response due to non-harmonic higher-order modes
HITACHI ELECTRONICS22 citations92
US4906885AMar 6, 1990
Electrode material for surface acoustic wave devices and surface acoustic wave device using the same
HITACHI ELECTRONICS35 citations91