Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
IPC Main Group
G01K 13/00

Thermometers specially adapted for specific purposes

Introduced: September 1968

Last revised: January 2021

Classification Context

Section:
PHYSICS
Class:
MEASURING; TESTING
Subclass:
MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR

Additional Content

Determining when the hardening temperature has been reached by measurement of magnetic or electrical properties in the treatment of metals or alloys Arrangements for detecting or measuring liquid temperature in washing machines, washer-dryers or laundry dryers Arrangements for detecting or measuring temperature of the drying air in washer-dryers or laundry dryers Measuring temperature in boreholes or wells Sensors specially adapted for exhaust gas recirculation systems, for determining temperature Devices for sensing temperature or actuated thereby structurally associated with dynamo-electric machines In arrangements for regulating or controlling electric motors, appropriate for both AC and DC, determining the temperature of the motor or of the drive

5 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • G01K 13/1 for measuring temperature within piled or stacked materials
  • G01K 13/12 combined with sampling devices for measuring temperatures of samples of material

Top Applicants

Top 10 applicants by patent filingsfor class G01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 41,447
  2. CHINESE ACADEMY OF SCIENCES 32,952
  3. ROBERT BOSCH DE 16,470
  4. SAMSUNG ELECTRONICS COMPANY KR 10,052
  5. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
  6. ZHEJIANG UNIVERSITY 9,529
  7. GUANGDONG POWER GRID CORPORATION 8,615
  8. TSINGHUA UNIVERSITY 7,805
  9. HALLIBURTON ENERGY SERVICES GROUP US 7,796
  10. QUALCOMM US 7,171