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Walter John

ADAerosol Dynamics: 1 patents #7 of 23Top 35%

PSParticle Sciences: 1 patents #5 of 9Top 60%

Berkeley, CA: #1,792 of 3,731 inventorsTop 50%

California: #185,134 of 386,348 inventorsTop 50%

Overall (All Time): #2,221,456 of 4,157,543Top 55%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
6170342	Spiral sampler	—	2001-01-09
5437198	Universal impactor for particle collection within sampling criteria	—	1995-08-01