Sokkia Co., Ltd.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01C MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY 699
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS594
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 2203
 
  
 
G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR 159
 
  
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 1197
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 1241
 
  
 
1004 OTHER MEASURING INSTRUMENTS, APPARATUS AND DEVICES135

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7825367 Rotary encoderAug 25, 06Nov 02, 10[G01D]
7492444 Electric optical distance meterJan 03, 08Feb 17, 09[G01C]
D581819 Automatic leveling laser marking instrumentDec 19, 07Dec 02, 08[1004]
7446863 Automatic collimation device for surveying apparatusNov 30, 06Nov 04, 08[G01B]
7361874 Auto focusing mechanism of surveying instrumentDec 28, 05Apr 22, 08[G02B]
7345748 Survey system capable of remotely controlling a surveying instrumentMay 13, 05Mar 18, 08[G01B]
7336346 Distance measuring device and method thereofMay 17, 06Feb 26, 08[G01C]
7321420 Survey systemMar 02, 06Jan 22, 08[G01B]
7304729 Survey systemFeb 07, 06Dec 04, 07[G01B]
7200945 Surveying instrumentApr 05, 05Apr 10, 07[G01C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7339655 Electric optical distance wavelength meterExpiredOct 19, 05Mar 04, 08[G01C]
7085672 Surveying apparatus with network communicationsExpiredFeb 28, 03Aug 01, 06[G01C]
2005/0254,043 Survey systemAbandonedMay 13, 05Nov 17, 05[G01C, G01B]
6960749 Automatic focusing mechanism for mounting on measuring deviceExpiredAug 01, 00Nov 01, 05[G02B]
6922899 Rotary encoderExpiredDec 04, 03Aug 02, 05[G01B]
6768767 GPS receiver capable of receiving C/A and P codes on multiple channelsExpiredOct 13, 98Jul 27, 04[H04B, G01S]
6108920 Electronic levelExpiredJan 27, 98Aug 29, 00[G01C]
5887354 Electronic level and leveling rod for use in electronic levelExpiredApr 10, 97Mar 30, 99[G01C]
5828456 Multiaxis laser interferometry distance measuring deviceExpiredOct 21, 96Oct 27, 98[G01B]
5821899 Method of determining the integral wave phase in a geodetic interferometry methodExpiredJul 26, 96Oct 13, 98[G01S]
5808740 Multiaxis distance measurement device for NC machine toolsExpiredAug 14, 96Sep 15, 98[G01B]
5757315 GPS receiving apparatusExpiredJul 26, 96May 26, 98[H04B, G01S]
5717523 Unpolarized light beam splitterExpiredOct 31, 96Feb 10, 98[G02B]
5711080 Encoder disc rotating device for a surveying instrumentExpiredJan 31, 96Jan 27, 98[G01C, G01B]
5639966 Machine height measuring method and machine height measuring device for surveying machinesExpiredOct 17, 95Jun 17, 97[G01F]
D375907 Support base for a laser light range meter equipped with a telescopeExpiredOct 11, 95Nov 26, 96[]
D375464 Electronic theodolite for distance measuringExpiredApr 19, 95Nov 12, 96[]
D371084 Range meter using a laser light waveExpiredMay 19, 95Jun 25, 96[]
5502641 Relative GPS method and apparatus that is able to correct for momemtary signal interruptionExpiredAug 12, 94Mar 26, 96[G05D]
D367233 Electronic theodolite for distance measuringExpiredApr 19, 95Feb 20, 96[]

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