Inventor · disambiguated record
Seigo Takahashi
Also filed as: TAKAHASHI SEIGO
71 granted patents·8 pending applications·1,214 citations·filing 1980–2022
99Inventor score
Files withNEC CORP32MITUTOYO CORP11MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8MITUTOYO MFG CO LTD4PANASONIC IP MAN CO LTD4
Top patents by PatentIndex Score
79 records- 0199USD548743STelevision receiver display layoutMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Granted Aug 14, 2007·220 cites·1 claims
- 0295USD483020SMonitor/television receiverMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Dec 2, 2003·68 cites·1 claims
- 0391US8041039B2Secret communications system and channel control methodNEC CORP·Filed 2007·Granted Oct 18, 2011·25 cites·25 claims
- 0490US8184989B2Communication system and timing control methodMAEDA WAKAKO·Filed 2006·Granted May 22, 2012·19 cites·44 claims
- 0587US8204231B2Method and device for managing cryptographic keys in secret communications networkMAEDA WAKAKO·Filed 2008·Granted Jun 19, 2012·16 cites·36 claims
- 0687US7907850B2Optical communication device and quantum key distribution system using the sameNEC CORP·Filed 2007·Granted Mar 15, 2011·13 cites·30 claims
- 0787US7734757B2Method and system for managing shared informationNEC CORP·Filed 2007·Granted Jun 8, 2010·16 cites·23 claims
- 0887US6957018B2Optical packet exchange system and optical switchNEC CORP·Filed 2002·Granted Oct 18, 2005·26 cites·13 claims
- 0986US8949300B2Circuit and method for controlling quality of random numbersTANAKA AKIHIRO·Filed 2007·Granted Feb 3, 2015·14 cites·33 claims
- 1085US6760552B1Optical receiving circuit and optical communication deviceNEC CORP·Filed 2000·Granted Jul 6, 2004·31 cites·15 claims
- 1184US6675491B2Scale on an apparatus for measuring displacementMITUTOYO CORP·Filed 2002·Granted Jan 13, 2004·37 cites·15 claims
- 1283US7938100B2Variable valve device for engineYAMAHA MOTOR CO LTD·Filed 2009·Granted May 10, 2011·8 cites·16 claims
- 1381US10411802B2Optical communication device, optical communication system, and optical communication methodNEC CORP·Filed 2016·Granted Sep 10, 2019·4 cites·8 claims
- 1481US8718485B2Quantum key distribution system, optical transmitter, optical modulation control circuit, and optical modulation control methodTANAKA AKIHIRO·Filed 2008·Granted May 6, 2014·8 cites·23 claims
- 1580US10122447B2Free space optical receiver and free space optical receiving methodNEC CORP·Filed 2014·Granted Nov 6, 2018·4 cites·17 claims
- 1680US7783042B2Communication system and synchronization method thereofNEC CORP·Filed 2005·Granted Aug 24, 2010·9 cites·27 claims
- 1780US6570687B2Optical packet exchange system and optical switchNEC CORP·Filed 2002·Granted May 27, 2003·13 cites·6 claims
- 1879US5920198ACapacitance-type displacement measuring deviceMITUTOYO CORP·Filed 1997·Granted Jul 6, 1999·47 cites·13 claims
- 1978US9160529B2Secret communication system and method for generating shared secret informationTAJIMA AKIO·Filed 2006·Granted Oct 13, 2015·9 cites·18 claims
- 2078US8009984B2Method and apparatus for measuring optical power of very weak light, and optical communication system using the sameNEC CORP·Filed 2006·Granted Aug 30, 2011·7 cites·28 claims
- 2178USD469066SCable television receiverMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Jan 21, 2003·22 cites·1 claims
- 2277USD496341STelevision receiverMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Sep 21, 2004·21 cites·1 claims
- 2377US6760346B1Packet switching networkNEC CORP·Filed 2000·Granted Jul 6, 2004·26 cites·7 claims
- 2476US10313011B2Free space optical receiver and free space optical receiving methodNEC CORP·Filed 2015·Granted Jun 4, 2019·3 cites·17 claims
- 2576US5979069ADial gaugeMITUTOYO CORP·Filed 1997·Granted Nov 9, 1999·34 cites·14 claims
- 2675US8638942B2Method and system for managing shared random numbers in secret communication networkMAEDA WAKAKO·Filed 2009·Granted Jan 28, 2014·6 cites·25 claims
- 2775US6373911B1Bit synchronization circuitNEC CORP·Filed 1999·Granted Apr 16, 2002·89 cites·9 claims
- 2874US8041232B2Optical transmitter and control method thereofNEC CORP·Filed 2008·Granted Oct 18, 2011·5 cites·25 claims
- 2974US7447260B2Equalizer, equalization method, and transmitterNEC CORP·Filed 2003·Granted Nov 4, 2008·18 cites·12 claims
- 3074USD496009STelevision receiverMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Sep 14, 2004·18 cites·1 claims
- 3173US8171354B2Communication system and method for controlling the sameTANAKA AKIHIRO·Filed 2011·Granted May 1, 2012·3 cites·36 claims
- 3273US4389786AContour measuring instrumentMITUTOYO MFG CO LTD·Filed 1981·Granted Jun 28, 1983·22 cites·13 claims
- 3372US10454577B2Free space optical transmitter and free space optical communication methodNEC CORP·Filed 2016·Granted Oct 22, 2019·2 cites·14 claims
- 3472US10256904B2Free space optical receiver and free space optical receiving methodNEC CORP·Filed 2015·Granted Apr 9, 2019·2 cites·12 claims
- 3570US8096272B2Variable valve device for engineTAKAHASHI SEIGO·Filed 2009·Granted Jan 17, 2012·4 cites·10 claims
- 3670US6441935B1Optical packet exchange system and optical switchNEC CORP·Filed 1998·Granted Aug 27, 2002·27 cites·5 claims
- 3769US7197246B2Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexerNEC CORP·Filed 2002·Granted Mar 27, 2007·6 cites·28 claims
- 3868US7560683B2Photo detecting circuit and noise elimination method utilized to produce a photo reception signalNEC CORP·Filed 2006·Granted Jul 14, 2009·6 cites·15 claims
- 3967USD492291SMonitor/television receiverMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Jun 29, 2004·15 cites·1 claims
- 4066US8391491B2Communication system and synchronization control methodTANAKA AKIHIRO·Filed 2006·Granted Mar 5, 2013·3 cites·13 claims
- 4166US7013576B2Measuring device using multi-start threaded spindleMITUTOYO CORP·Filed 2002·Granted Mar 21, 2006·13 cites·8 claims
- 4266US6781265B2Linear actuatorMITUTOYO CORP·Filed 2002·Granted Aug 24, 2004·13 cites·19 claims
- 4366USD488819SDigital CATV terminalMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Apr 20, 2004·14 cites·1 claims
- 4465US12189680B2Content management device, content management system, and control methodPANASONIC IP MAN CO LTD·Filed 2022·Granted Jan 7, 2025·0 cites·10 claims
- 4565US6260286B1MicrometerMITUTOYO CORP·Filed 1999·Granted Jul 17, 2001·27 cites·9 claims
- 4664US10862593B2Free-space optical communication receiving device and method of controlling the sameNEC CORP·Filed 2017·Granted Dec 8, 2020·1 cites·20 claims
- 4763US7974540B2Communication system and communication method using the sameJAPAN SCIENCE & TECH AGENCY·Filed 2004·Granted Jul 5, 2011·9 cites·16 claims
- 4862US6466344B2Optical switch, optical amplifier and optical power controller as well as optical add-drop multiplexerNEC CORP·Filed 2001·Granted Oct 15, 2002·5 cites·9 claims
- 4962US6382839B1Adapter for abutting and connecting confronting optical cablesNEC CORP·Filed 2000·Granted May 7, 2002·9 cites·8 claims
- 5061USD481022SMonitor/television receiverMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Oct 21, 2003·11 cites·1 claims
Showing the top 50 of 79 patent records by PatentIndex Score.
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