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David Johnston — 1 Patent in 2018

AMAms Trace Metals: 1 patents #2 of 9Top 25%

Portola Valley, CA: #81 of 156 inventorsTop 55%

California: #23,431 of 60,411 inventorsTop 40%

Overall (2018): #444,963 of 503,207Top 90%

1 Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
10018567	Methods and apparatus for determination of halohydrocarbons	Harmesh K. Saini, Michael J. West, Qin Wang, James Garvey, Paul Rand +3 more	2018-07-10