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Spring Creek, NV, United States of America

John William Langhans, Jr

Average Co-Inventor Count = 2.25

ph-index = 2

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 13

John William Langhans, JrWilson Chung-Yeh Tsu (2 patents)John William Langhans, JrYeonuk Choi (1 patent)John William Langhans, JrQiankun Wang (1 patent)John William Langhans, JrJohn William Langhans, Jr (3 patents)Wilson Chung-Yeh TsuWilson Chung-Yeh Tsu (2 patents)Yeonuk ChoiYeonuk Choi (15 patents)Qiankun WangQiankun Wang (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Barrick Gold Corporation (2 from 35 patents)

2. Other (1 from 832,880 patents)


3 patents:

1. 9534273 - Alkaline and acid pressure oxidation of precious metal-containing materials

2. 9051625 - Method for recovering precious metals and copper from leach solutions

3. 8623115 - Alkaline and acid pressure oxidation of precious metal-containing materials

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as of
1/5/2026
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