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Table 2 IPC schemes of the central nodes in Section G and H in community containing B60R

From: Community evolution in patent networks: technological change and network dynamics

Code Scheme
G01 Measuring; Testing
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
G01G WEIGHING
G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
G01L MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID
  PRESSURE
G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR
  APPARATUS, NOT OTHERWISE PROVIDED FOR
G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING
  PRESENCE OR ABSENCE OF MOVEMENT; INDICATING DIRECTION OF MOVEMENT
G01W METEOROLOGY
G05 Controlling; Regulating
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS;
  MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
G05G CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
G06 Computing; Calculating;
G06M COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
G08 Signalling
G08G TRAFFIC CONTROL SYSTEMS
G10 Musical instruments; Acoustics
G10K SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,
  NOISE OR OTHER ACOUSTIC WAVES IN GENERAL
H01 Basic electric elements
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
H02 Generation, conversion, or distribution of electric power
H02G INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
H02K DYNAMO-ELECTRIC MACHINES
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC
  CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS