Inventor · disambiguated record
Han Cheng
Also filed as: CHENG HAN · CHENG HAN-SHIM
4 granted patents·86 citations·filing 1999–2019
77Inventor score
Technology areasA47L
Files withCHENG HAN2
Top patents by PatentIndex Score
4 records- 0181USD894679SKettle baseCHENG HAN·Filed 2019·Granted Sep 1, 2020·30 cites·1 claims
- 0272US6231647B1Vacuum cleanerFiled 1999·Granted May 15, 2001·49 cites·8 claims
- 0342USD507852SHandheld brush vacuumFiled 2003·Granted Jul 26, 2005·6 cites·1 claims
- 0424USD953796SKettle baseCHENG HAN·Filed 2019·Granted Jun 7, 2022·1 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →