Inventor · disambiguated record
Tsang-Huai Chang
Also filed as: CHANG TSANG-HUAI
6 granted patents·23 citations·filing 1998–2005
77Inventor score
Top patents by PatentIndex Score
6 records- 0153US6535305B1Transmission mechanism for optical scannerUMAX DATA SYSTEMS INC·Filed 2000·Granted Mar 18, 2003·2 cites·8 claims
- 0251US6073923APaper-feeding mechanism for a document duplicating machineUMAX DATA SYSTEMS·Filed 1998·Granted Jun 13, 2000·12 cites·8 claims
- 0343USRE41568EClosed circuit control device for scannerCHANG TSANG-HUAI·Filed 2005·Granted Aug 24, 2010·0 cites·23 claims
- 0443USRE41272EImaging apparatus with divers resolutionCHANG TSANG-HUAI·Filed 2005·Granted Apr 27, 2010·0 cites·15 claims
- 0535US6073924APaper-loading mechanism for a document duplicating machineUMAX DATA SYSTEMS·Filed 1998·Granted Jun 13, 2000·6 cites·5 claims
- 0628US6118600ALens switch apparatusUMAX DATA SYSTEMS INC·Filed 1999·Granted Sep 12, 2000·3 cites·21 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →