Inventor · disambiguated record
Kazuo Takatsu
Also filed as: TAKATSU KAZUO
19 granted patents·1 pending application·390 citations·filing 1989–2019
95Inventor score
Top patents by PatentIndex Score
20 records- 0187US5557437AOptical terminal system having self-monitoring functionFUJITSU LTD·Filed 1995·Granted Sep 17, 1996·120 cites·11 claims
- 0280US10644823B2Optical transfer system, control device, optical transfer method, and transfer deviceFUJITSU LTD·Filed 2019·Granted May 5, 2020·3 cites·14 claims
- 0377US8879915B2Optical switching device, optical add device, and optical drop deviceSAKAMOTO TAKESHI·Filed 2011·Granted Nov 4, 2014·4 cites·10 claims
- 0474US6118795AReception pointer processing apparatus in SDH transmission systemFUJITSU LTD·Filed 1997·Granted Sep 12, 2000·36 cites·18 claims
- 0571US6919987B2Light wavelength-multiplexing systemsFUJITSU LTD·Filed 2002·Granted Jul 19, 2005·11 cites·6 claims
- 0669US6441955B1Light wavelength-multiplexing systemsFUJITSU LTD·Filed 1998·Granted Aug 27, 2002·49 cites·20 claims
- 0765US6385213B1Frame synchronous pattern processing apparatus and frame synchronous pattern detection apparatus and method for detecting frame synchronous patternFUJITSU LTD·Filed 1997·Granted May 7, 2002·25 cites·17 claims
- 0860US5754545AAdd-drop multiplexer with enhancement of accessibility to signals in different hierarchical levels and flexibility in various services and circuit setting operationsFUJITSU LTD·Filed 1996·Granted May 19, 1998·24 cites·39 claims
- 0959US5311501ARouting system for linear add-drop multiplexerFUJITSU LTD·Filed 1992·Granted May 10, 1994·23 cites·19 claims
- 1058US7151783B2Frame synchronous pattern processing apparatus and frame synchronous pattern detection apparatus and method for detecting frame synchronous patternFUJITSU LTD·Filed 2001·Granted Dec 19, 2006·3 cites·18 claims
- 1158US5909175AConnection switching circuit for ring systemFUJITSU LTD·Filed 1997·Granted Jun 1, 1999·23 cites·7 claims
- 1257US7359316B1Reception pointer processing apparatus in SDH transmission systemFUJITSU LTD·Filed 2000·Granted Apr 15, 2008·3 cites·5 claims
- 1357US6009076ARepeating installationFUJITSU LTD·Filed 1996·Granted Dec 28, 1999·21 cites·13 claims
- 1453US9264167B2Optical add drop multiplexerTAKATSU KAZUO·Filed 2011·Granted Feb 16, 2016·1 cites·14 claims
- 1549US5844889ADifferent system transfer method for a ring transmission system and transmission apparatusFUJITSU LTD·Filed 1996·Granted Dec 1, 1998·14 cites·5 claims
- 1644US5172260AMethod for phase compensation of optical regenerator equipmentFUJITSU LTD·Filed 1990·Granted Dec 15, 1992·14 cites·11 claims
- 1742US5134609ADrop/insert channel selecting systemFUJITSU LTD·Filed 1989·Granted Jul 28, 1992·11 cites·27 claims
- 1838US6337848B1Path switching device for transmission apparatusFUJITSU LTD·Filed 1998·Granted Jan 8, 2002·5 cites·5 claims
- 1935US8977130B2Optical transmission device and optical filter circuitTAKEGUCHI KOJI·Filed 2011·Granted Mar 10, 2015·0 cites·17 claims
- 2034US2012141121A1Optical transmission equipmentITOH HIROYUKI·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →