IPC Main Group
G01B 3/00 Measuring instruments characterised by the use of mechanical techniques
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
Related Keywords
FEELERS for measuring dimensionsGAUGE(S) for linear dimensionsGAUGE(S) for mechanical measuringRODS for measuringSTAFFS for measuringTAPE(S) for measuring
14 direct subcodes
Child Classifications
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- G01B 3/02 Rulers with scales or marks for direct reading
- G01B 3/1 Measuring tapes
- G01B 3/11 Chains for measuring length
- G01B 3/12 Measuring wheels
- G01B 3/14 Templates for checking contours
- G01B 3/16 Compasses, i.e. with a pair of pivoted arms
- G01B 3/18 Micrometers
- G01B 3/2 Slide gauges
- G01B 3/22 Feeler-pin gauges, e.g. dial gauges
- G01B 3/3 Bars, blocks, or strips in which the distance between a pair of faces is fixed, although it may be preadjustable, e.g. end measure, feeler strip
- G01B 3/34 Ring or other apertured gauges, e.g. "go/no-go" gauge
- G01B 3/38 Gauges with an open yoke and opposed faces, i.e. calipers, in which the internal distance between the faces is fixed, although it may be preadjustable
- G01B 3/46 Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable
- G01B 3/56 Gauges for measuring angles or tapers, e.g. conical calipers
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