Inventor · disambiguated record
Karen Liu
Also filed as: LIU KAREN · LIU KAREN F
13 granted patents·2 pending applications·778 citations·filing 1986–2023
94Inventor score
Files withIBM7UNIV LELAND STANFORD JUNIOR3NUBIS COMMUNICATIONS INC2LIGHTWAVE LOGIC INC1LIU FRANK H M1
Top patents by PatentIndex Score
15 records- 0194US5953141ADynamic optical add-drop multiplexers and wavelength-routing networks with improved survivability and minimized spectral filteringIBM·Filed 1998·Granted Sep 14, 1999·140 cites·8 claims
- 0288US4938556ASuperfluorescent broadband fiber laser sourceUNIV LELAND STANFORD JUNIOR·Filed 1988·Granted Jul 3, 1990·89 cites·52 claims
- 0387US6208443B1Dynamic optical add-drop multiplexers and wavelength-routing networks with improved survivability and minimized spectral filteringIBM·Filed 1998·Granted Mar 27, 2001·79 cites·13 claims
- 0487US5825949AOptical wavelength division multiplexer for coupling to data sources and sinks, wherein at least two data sources and sinks operate with different communication protocolsIBM·Filed 1997·Granted Oct 20, 1998·94 cites·18 claims
- 0586US5930016AUpgradable modular wavelength division multiplexerTELLABS OPERATIONS INC·Filed 1996·Granted Jul 27, 1999·88 cites·20 claims
- 0685US4964131ABroadband optical fiber laserUNIV LELAND STANFORD JUNIOR·Filed 1989·Granted Oct 16, 1990·52 cites·48 claims
- 0782US4721352APolarizing apparatus and method utilizing an optical fiberUNIV LELAND STANFORD JUNIOR·Filed 1986·Granted Jan 26, 1988·50 cites·21 claims
- 0881US5745612AWavelength sorter and its application to planarized dynamic wavelength routingIBM·Filed 1995·Granted Apr 28, 1998·79 cites·18 claims
- 0977US5487120AOptical wavelength division multiplexer for high speed, protocol-independent serial data sourcesIBM·Filed 1994·Granted Jan 23, 1996·57 cites·12 claims
- 1062US5357363AInterconnections having improved signal-to-noise ratioIBM·Filed 1993·Granted Oct 18, 1994·26 cites·18 claims
- 1156US11435603B2TFP optical transition device and methodLIGHTWAVE LOGIC INC·Filed 2020·Granted Sep 6, 2022·0 cites·17 claims
- 1255US2024036254A1High-capacity optical input/output for data processorsNUBIS COMMUNICATIONS INC·Filed 2023·Application pending·0 cites
- 1354US2023375793A1Communication systems having pluggable modulesNUBIS COMMUNICATIONS INC·Filed 2023·Application pending·0 cites
- 1452US5039201ADouble-pass tunable fabry-perot optical filterIBM·Filed 1990·Granted Aug 13, 1991·19 cites·8 claims
- 1533USD328464SAntenna for radar or the likeLIU FRANK H M·Filed 1990·Granted Aug 4, 1992·5 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →