Alken, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS198
 
  
 
G01C MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY 1104
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
G09G ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 1150

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8121812 AC magnetic tracking with phase disambiguationSep 10, 08Feb 21, 12[G01C, H01F]
8013595 AC magnetic tracking system with phase lockingJun 12, 08Sep 06, 11[G01B, G01R]
7873491 AC magnetic tracking system with non-coherency between sources and sensorsJan 22, 08Jan 18, 11[G06F]
7710395 Head-mounted pointing and control deviceJul 06, 05May 04, 10[G09G]
7292948 Magnetic position and orientation measurement system with eddy current distortion compensationApr 22, 05Nov 06, 07[G01R]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2006/0255,795 Six-degree-of-freedom, integrated-coil AC magnetic trackerAbandonedMay 10, 06Nov 16, 06[G01B]
2006/0170,417 Distributed array magnetic trackingAbandonedJan 25, 06Aug 03, 06[G01B]
2006/0038,555 Self-training AC magnetic tracking systems to cover large areasAbandonedAug 17, 05Feb 23, 06[G01B]
2005/0285,590 AC magnetic tracking system with non-coherency between sources and sensorsAbandonedJun 08, 05Dec 29, 05[G01J]

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