WH

William B. Helfman

QU Quantum: 1 patents #325 of 703Top 50%
Overall (All Time): #2,205,383 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6607700 Gas diffusion sampling and measurement system for occupational dosimetry and air quality monitoring as exemplified by a carbon monoxide occupational dosimeter Michael G. Apte, Mark K. Goldstein, Michelle S. Oum 2003-08-19
5733505 Non-regenerating carbon monoxide sensor Mark K. Goldstein, Vernon T. Taniguchi, Michelle S. Oum 1998-03-31