Inventor · disambiguated record
Hongdu Liu
Also filed as: LIU HONGDU
4 granted patents·96 citations·filing 2001–2005
79Inventor score
Top patents by PatentIndex Score
4 records- 0180US6580546B2Faraday rotatorPRIMANEX·Filed 2001·Granted Jun 17, 2003·32 cites·10 claims
- 0277US7412132B1Mini fiber optic isolatorSINO POINT TECHNOLOGY LTD·Filed 2005·Granted Aug 12, 2008·19 cites·20 claims
- 0377US6493139B1Optical switchFiled 2001·Granted Dec 10, 2002·25 cites·2 claims
- 0471US6631238B2Variable optical attenuatorPRIMANEX CORP·Filed 2001·Granted Oct 7, 2003·20 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →