PNF CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G09G ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 15136
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 13434
 
  
 
G08C TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS 1045
 
  
 
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES4105
 
  
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 3195
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 3239
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 257
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 2360
 
  
 
1402 DATA PROCESSING EQUIPMENT AS WELL AS PERIPHERAL APPARATUS AND DEVICES261
 
  
 
G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR 196

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9836137 Ultrasonic wave receiver and position information input apparatus comprising sameMay 27, 14Dec 05, 17[G06F, G01S]
9471183 Mobile device incorporating projector and pen-location transcription systemJul 10, 13Oct 18, 16[G09G, G06F]
9342163 Position measuring device and position information input system using sameFeb 13, 13May 17, 16[G06F]
9304611 Directional ultrasound transmitting stylusJan 10, 14Apr 05, 16[H01L, H02N, G06F]
9285899 Data entry device utilizing writing implement rotationFeb 17, 09Mar 15, 16[G06F]
9274623 Position information input systemApr 22, 14Mar 01, 16[G06F]
8884171 Pen transcription system with improved noise rejectionMay 24, 10Nov 11, 14[G06F]
8641197 Acoustical receiver and pen transcription system adapted for rejecting virtual pen imagesDec 23, 11Feb 04, 14[G08B, G08C, H04B, G06F, G03B, G01S, G06K, H05K]
8487915 Mobile device incorporating projector and pen-location transcription systemSep 07, 04Jul 16, 13[G09G]
8400877 Method and apparatus for measuring position of the object using microphoneJun 18, 08Mar 19, 13[G06F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0015,492 KEYBOARD ENABLING INPUTTING OF POSITION INFORMATION AND KEYBOARD SYSTEM COMPRISING SAMEAbandonedFeb 13, 13Jan 15, 15[G06F]
2013/0328,836 INFORMATION INPUT APPARATUS USING ULTRASONIC SIGNALAbandonedJun 10, 13Dec 12, 13[G06F]
2011/0018,844 METHOD AND SYSTEM FOR INPUTTING DOCUMENT INFORMATIONAbandonedFeb 23, 09Jan 27, 11[G06F]

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