Walter John

AD Aerosol Dynamics: 1 patents #7 of 23Top 35%

PS Particle Sciences: 1 patents #5 of 9Top 60%

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

Patents All Time

Issued Patents All Time

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