Inventor
SHIMAMURA HAJIME
JP13 patents
⚠️ This page may combine multiple inventors who share the name “SHIMAMURA HAJIME”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OKI ELECTRIC IND CO LTD
9 patentsUS6377140B1Apr 23, 2002
Saw resonator filter with bridged-T configuration
OKI ELECTRIC IND CO LTD170 citations98
US5905418AMay 18, 1999
Surface-acoustic-wave filters with poles of attenuation created by impedance circuits
OKI ELECTRIC IND CO LTD97 citations97
US6937113B2Aug 30, 2005
Branching filter package
OKI ELECTRIC IND CO LTD20 citations92
US6870440B2Mar 22, 2005
Saw branching filter with a branching filter circuit formed on the package
OKI ELECTRIC IND CO LTD17 citations92
USRE37639EApr 9, 2002
Surface-acoustic-wave filters with poles of attenuation created by impedance circuits
OKI ELECTRIC IND CO LTD25 citations92
US6222426B1Apr 24, 2001
Branching filter with a composite circuit of an LC circuit and a serial arm saw resonator
OKI ELECTRIC IND CO LTD41 citations92
US5949305ASep 7, 1999
Saw filter encapsulated in a ceramic package with capacitance incorporated therein
OKI ELECTRIC IND CO LTD22 citations92
US6208223B1Mar 27, 2001
Receiving filter of a saw separator with greater electrode interdigitated width in first stage parallel resonator
OKI ELECTRIC IND CO LTD25 citations91
US7479845B2Jan 20, 2009
Branching filter package
OKI ELECTRIC IND CO LTD8 citations84
OKI SEMICONDUCTOR CO LTD
4 patentsUS7893794B2Feb 22, 2011
Branching filter package
OKI SEMICONDUCTOR CO LTD6 citations73
US7679472B2Mar 16, 2010
Branching filter package
OKI SEMICONDUCTOR CO LTD3 citations73
US7602263B2Oct 13, 2009
Branching filter package
OKI SEMICONDUCTOR CO LTD3 citations62
US7859362B2Dec 28, 2010
Branching filter package
OKI SEMICONDUCTOR CO LTD0 citations52