Inventor · disambiguated record
Nobuhiko Shibagaki
Also filed as: SHIBAGAKI NOBUHIKO
21 granted patents·1 pending application·681 citations·filing 1989–2012
96Inventor score
Top patents by PatentIndex Score
22 records- 0195US7489063B2Thin film piezoelectric bulk acoustic wave resonator and radio frequency filter using the sameHITACHI MEDIA ELECTRON KK·Filed 2007·Granted Feb 10, 2009·43 cites·18 claims
- 0294US5202652ASurface acoustic wave filter device formed on a plurality of piezoelectric substratesHITACHI LTD·Filed 1990·Granted Apr 13, 1993·94 cites·12 claims
- 0393US6714099B2Radio frequency filter, radio frequency circuit, antenna duplexer and radio terminalHITACHI MEDIA ELECTRON KK·Filed 2002·Granted Mar 30, 2004·74 cites·18 claims
- 0492US6525624B1Band-switchable surface acoustic wave antenna duplexer and mobile radio terminalHITACHI MEDIA ELECTRON KK·Filed 2000·Granted Feb 25, 2003·62 cites·14 claims
- 0591US6766149B1Mobile radio terminal and surface acoustic wave antenna duplexerHITACHI MEDIA ELECTRON KK·Filed 1999·Granted Jul 20, 2004·73 cites·7 claims
- 0688US7561010B2Piezoelectric thin film resonatorsHITACHI MEDIA ELECTRON KK·Filed 2006·Granted Jul 14, 2009·19 cites·8 claims
- 0787US5438305AHigh frequency module including a flexible substrateHITACHI LTD·Filed 1992·Granted Aug 1, 1995·106 cites·21 claims
- 0886US7659795B2Antenna duplexer and wireless terminal using the sameHITACHI MEDIA ELECTRON KK·Filed 2008·Granted Feb 9, 2010·11 cites·1 claims
- 0986US5115216ASurface acoustic wave filter including saw resonators with transmission spaces thereinHITACHI LTD·Filed 1989·Granted May 19, 1992·38 cites·30 claims
- 1085US7499678B2Antenna sharing device and wireless communication terminal using the sameHITACHI MEDIA ELECTRON KK·Filed 2005·Granted Mar 3, 2009·12 cites·19 claims
- 1184US7385464B2Resonator type filterHITACHI MEDIA ELECTRON KK·Filed 2005·Granted Jun 10, 2008·13 cites·8 claims
- 1278US5666091AStructure of surface acoustic wave filterHITACHI MEDIA ELECTRON KK·Filed 1996·Granted Sep 9, 1997·34 cites·17 claims
- 1373US5422615AHigh frequency circuit deviceHITACHI LTD·Filed 1993·Granted Jun 6, 1995·51 cites·33 claims
- 1472US8644367B2Antenna beam scan unit and wireless communication system using antenna beam scan unitNAGAISHI HIDEYUKI·Filed 2012·Granted Feb 4, 2014·5 cites·15 claims
- 1568US7586390B2Bulk acoustic wave resonator, bulk acoustic wave filter, RF module including bulk acoustic wave resonator and/or filter, and bulk acoustic wave oscillatorHITACHI MEDIA ELECTRON KK·Filed 2006·Granted Sep 8, 2009·6 cites·15 claims
- 1657US5065065ASurface acoustic wave deviceHITACHI LTD·Filed 1990·Granted Nov 12, 1991·14 cites·40 claims
- 1751US6047306ACDMA communication RF signal processing apparatus using SAWHITACHI LTD·Filed 1997·Granted Apr 4, 2000·19 cites·45 claims
- 1846US2007030095A1Antenna duplexer and wireless terminal using the sameHIKITA MITSUTAKA·Filed 2005·Application pending·0 cites
- 1945US8102102B2Thin film tuning-fork type inflection resonator and electric signal processing elementISOBE ATSUSHI·Filed 2011·Granted Jan 24, 2012·0 cites·5 claims
- 2044US7915793B2Thin film tuning-fork type inflection resonator and electric signal processing elementHITACHI LTD·Filed 2007·Granted Mar 29, 2011·0 cites·8 claims
- 2139US5087901ASurface acoustic wave band-pass filter with different phase weighted transducersHITACHI LTD·Filed 1990·Granted Feb 11, 1992·6 cites·1 claims
- 2230US5235234ASurface acoustic wave deviceHITACHI LTD·Filed 1991·Granted Aug 10, 1993·1 cites·26 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →