HACH ULTRA ANALYTICS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 6200
 
  
 
G06M COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR 113

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6072187 Apparatus and method for reducing stray laser light in particle sensors using a narrow band filterJul 06, 94Jun 06, 00[G01N]
5606418 Quasi bright field particle sensorMar 29, 95Feb 25, 97[G01N]
5534706 Particle monitor for throttled pumping systemsMar 07, 94Jul 09, 96[G01N]
5436465 Modular particle monitor for vacuum process equipmentMay 13, 93Jul 25, 95[G01N]
5347138 In situ real time particle monitor for a sputter coater chamberApr 01, 93Sep 13, 94[G01N]
5247188 Concentrator funnel for vacuum line particle monitorsJan 23, 92Sep 21, 93[G01N]
5235625 Method for synchronizing particle counters to external eventsJan 27, 92Aug 10, 93[G06M]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5132548 High sensitivity, large detection area particle sensor for vacuum applicationsExpiredSep 14, 90Jul 21, 92[G01N]
4896048 Scattering-type particle detection device for use in high temperature process chambersExpiredMay 27, 88Jan 23, 90[G01N]

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