IPC Main Group
G01C 3/00 Measuring distances in line of sight; Optical rangefinders
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 DISTANCES in line of sightoptical RANGEFINDER(S)
6 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- G01C 3/02 Details
- G01C 3/1 using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument
- G01C 3/22 using a parallactic triangle with variable angles and a base of fixed length at, near, or formed by, the object
- G01C 3/24 using a parallactic triangle with fixed angles and a base of variable length in the observation station, e.g. in the instrument
- G01C 3/26 using a parallactic triangle with fixed angles and a base of variable length at, near, or formed by, the object
- G01C 3/32 by focusing the object, e.g. on a ground glass screen
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