HC

Hung Che Cheng

3M: 1 patents #7,233 of 11,543Top 65%
Overall (All Time): #3,121,025 of 4,157,543Top 80%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8809248 Engine cleaning composition and method for cleaning the engine Xin Huo, Jeffrey R. Janssen 2014-08-19