Inventor · disambiguated record
Xiu-Feng Liu
Also filed as: Liu xiu-feng
2 granted patents·1 pending application·24 citations·filing 2009–2011
60Inventor score
Technology areasE05B
Top patents by PatentIndex Score
3 records- 0171US8479544B2Auto-unlock assembly for a tubular lockLiu xiu-feng·Filed 2011·Granted Jul 9, 2013·11 cites·1 claims
- 0269US7870772B1Exterior lever lock device with a clutch assemblyEVERSAFETY PREC INDUSTRY TIANJIN CO LTD·Filed 2009·Granted Jan 18, 2011·13 cites·18 claims
- 0337US2012200095A1Tubular lever lockWANG ZHI-QIANG·Filed 2011·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →