IPC Main Group
G01C 21/00 Navigation; Navigational instruments not provided for in groups
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
Related Keywords
measuring COURSESmeasuring DRAG(S) in navigationmeasuring DRIFT(S) for navigationNAVIGATIONPLOTTING in navigationdetermining ROUTESmeasuring position or course of VEHICLES
6 direct subcodes
Child Classifications
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- G01C 21/02 by astronomical means
- G01C 21/04 by terrestrial means
- G01C 21/1 by using measurement of speed or acceleration
- G01C 21/2 Instruments for performing navigational calculations
- G01C 21/24 specially adapted for cosmonautical navigation
- G01C 21/26 specially adapted for navigation in a road network
Top Applicants
Top 10 applicants by patent filingsfor class G01, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 41,447
- CHINESE ACADEMY OF SCIENCES 32,952
- ROBERT BOSCH DE 16,470
- SAMSUNG ELECTRONICS COMPANY KR 10,052
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
- ZHEJIANG UNIVERSITY 9,529
- GUANGDONG POWER GRID CORPORATION 8,615
- TSINGHUA UNIVERSITY 7,805
- HALLIBURTON ENERGY SERVICES GROUP US 7,796
- QUALCOMM US 7,171