JJ

John William Langhans, JR.

BG Barrick Gold: 2 patents #12 of 46Top 30%
📍 Elko, NV: #13 of 86 inventorsTop 20%
🗺 Nevada: #2,413 of 8,397 inventorsTop 30%
Overall (All Time): #1,486,617 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9534273 Alkaline and acid pressure oxidation of precious metal-containing materials Wilson Chung-Yeh Tsu 2017-01-03
9051625 Method for recovering precious metals and copper from leach solutions Yeonuk Choi, Qiankun Wang 2015-06-09
8623115 Alkaline and acid pressure oxidation of precious metal-containing materials Wilson Chung-Yeh Tsu 2014-01-07