Inventor · disambiguated record
Shun-Ichi Seki
Also filed as: SEKI SHUN-ICHI
21 granted patents·1,276 citations·filing 1993–2010
97Inventor score
Top patents by PatentIndex Score
21 records- 0199US5446330ASurface acoustic wave device having a lamination structureMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Aug 29, 1995·284 cites·42 claims
- 0296US5920142AElectronic part and a method of production thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Jul 6, 1999·206 cites·48 claims
- 0395US5998907ASurface acoustic wave devices and their manufacturing methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Dec 7, 1999·102 cites·11 claims
- 0493US5729186AResonator ladder surface acoustic wave filter suppressing spurious signalsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Mar 17, 1998·87 cites·20 claims
- 0590US5506552ASurface acoustic wave filter with multiple ground terminalsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Apr 9, 1996·55 cites·6 claims
- 0689US7084718B2Band elimination filter, filter device, antenna duplexer and communication apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Aug 1, 2006·39 cites·37 claims
- 0789US6154940AElectronic part and a method of production thereofMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Dec 5, 2000·93 cites·62 claims
- 0889US5991989AMethod of manufacture of surface acoustic wave deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Nov 30, 1999·91 cites·6 claims
- 0987US5821665ASurface acoustic wave device and method of manufactureMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Oct 13, 1998·79 cites·13 claims
- 1085US5453652ASurface acoustic wave device with interdigital transducers formed on a holding substrate thereof and a method of producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Sep 26, 1995·40 cites·16 claims
- 1183US8564172B2Elastic wave element and electronic apparatus using sameSEKI SHUN-ICHI·Filed 2010·Granted Oct 22, 2013·11 cites·19 claims
- 1283US5592135ASurface acoustic wave filter with different filter portions satisfying complex conjugate relationship of impedancesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Jan 7, 1997·44 cites·5 claims
- 1381US5847626ABalanced-type surface acoustic wave lattice filterMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Dec 8, 1998·39 cites·7 claims
- 1479US6975180B2Surface acoustic wave filter, and antenna duplexer and communication equipment using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Dec 13, 2005·20 cites·27 claims
- 1572US8576025B2Acoustic wave device, and filter and duplexer using the sameINOUE TAKASHI·Filed 2010·Granted Nov 5, 2013·3 cites·9 claims
- 1672US7034635B2Antenna duplexer, design method for antenna duplexer, production method for antenna duplexer, and communication apparatus using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Apr 25, 2006·12 cites·29 claims
- 1768US7646266B2Surface acoustic wave resonator and surface acoustic wave filter using the samePANASONIC CORP·Filed 2005·Granted Jan 12, 2010·6 cites·11 claims
- 1865US5894251AHigh frequency filter having saw and dielectric filters with different frequency temperature characteristic signsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Apr 13, 1999·18 cites·8 claims
- 1962US5589806ASurface acoustic wave filter having parallel/serial resonator connection based on transmitting and receiving frequenciesMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Dec 31, 1996·17 cites·6 claims
- 2061US6166611AResonator ladder type surface acoustic wave filterMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Dec 26, 2000·16 cites·10 claims
- 2157US6043725AFilter circuit having plural passing bandsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Mar 28, 2000·14 cites·28 claims
Join the waitlist — get patent alerts
Get an alert when Shun-Ichi Seki files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →