Inventor · disambiguated record
Yongfeng Yi
Also filed as: YI YONGFENG
2 granted patents·1 pending application·4 citations·filing 2010–2012
45Inventor score
Top patents by PatentIndex Score
3 records- 0155US8950340B2Ballast hopper car discharge door control systemWANG SHENGKUN·Filed 2012·Granted Feb 10, 2015·3 cites·11 claims
- 0248US8746493B2Tank container, tank body and processing method of tank bodyLI GUANG·Filed 2010·Granted Jun 10, 2014·1 cites·7 claims
- 0329US2013019776A1Ballast hopper carQIQIHAR RAILWAY ROLLING STOCK·Filed 2012·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →