LY

Liu Yin-Feng

SC Simpson Strong-Tie Company: 2 patents #48 of 131Top 40%
AC A-Stainless International Co.: 1 patents #2 of 3Top 70%
Overall (All Time): #1,536,853 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8894339 Variably threaded screw — 2014-11-25
D581776 Screw — 2008-12-02
7402016 Variably threaded screw — 2008-07-22