TREK, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 3359
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 2157
 
  
 
B01D SEPARATION 1133
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS198
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205
 
  
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 165
 
  
 
H02N ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR130

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8514544 Electrostatic clamp optimizerAug 07, 10Aug 20, 13[H01L, H01T]
7439746 Electrostatic voltmeterOct 27, 06Oct 21, 08[G01R]
7427864 Ion balance monitorOct 28, 05Sep 23, 08[B01D]
6660665 Platen for electrostatic wafer clamping apparatusMay 01, 02Dec 09, 03[H01L, H02N]
6507197 Electrostatic force detector with cantilever for an electrostatic force microscopeOct 30, 98Jan 14, 03[G01N]
6337478 Electrostatic force detector with cantilever and shield for an electrostatic force microscopeNov 05, 99Jan 08, 02[G01R, G01B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0085,714 Method and device for moving a sensor close to a surfaceAbandonedOct 03, 12Apr 04, 13[G06F, G01B]
2008/0079,435 Electrostatic Voltmeter With Spacing-Independent Speed of ResponseAbandonedSep 08, 06Apr 03, 08[G01R]
6600323 Sensor for non-contacting electrostatic detectorExpiredAug 24, 01Jul 29, 03[G01R]
6573725 Sensor for non-contacting electrostatic detectorExpiredAug 24, 01Jun 03, 03[G01R]
5119030 Apparatus for electrically inspecting the surface of a drumExpiredMay 18, 90Jun 02, 92[G01N]
5101159 Electrostatic pin hole detectorExpiredMay 18, 90Mar 31, 92[G01N]

Top Inventors for This Owner

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