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CPC Class Not Allocatable
G01

MEASURING; TESTING

Description

Class G01 encompasses instruments, apparatus, and methods for measuring and testing physical quantities and phenomena across diverse domains. This broadly inclusive classification covers measurement devices ranging from simple scales and thermometers to sophisticated optical, electrical, and mechanical instruments for quantifying properties such as length, mass, temperature, pressure, velocity, and radiation. The class also includes testing equipment and methodologies for determining material properties, performance characteristics, and conformance to standards. Adjacent classes G02 (Optics) and G03 (Photography) handle specialized optical and photographic measurement systems, while G04 covers timing instruments specifically.

Filing statistics

CPC G01 recorded 3,161,701 patent applications worldwide between 2013 and 2023, summed across its 18 subclasses. Annual filings grew from 164,235 in 2013 to 333,390 in 2023 (+103%), peaking at 372,434 applications in 2020. The most active applicants in class G01 are CHINESE ACADEMY OF SCIENCES (21,460 applications), ROBERT BOSCH (17,801 applications) and SGCC(STATE GRID CORPORATION OF CHINA) (17,347 applications).

Source: EPO PATSTAT, worldwide filings

18 direct subcodes

Child Classifications

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Top Applicants

Top 10 applicants by patent filings, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 21,460
  2. ROBERT BOSCH DE 17,801
  3. SGCC(STATE GRID CORPORATION OF CHINA) 17,347
  4. SAMSUNG ELECTRONICS COMPANY KR 13,192
  5. QUALCOMM US 9,900
  6. HALLIBURTON ENERGY SERVICES GROUP US 9,742
  7. PHILIPS ELECTRONICS NL 7,249
  8. MITSUBISHI ELECTRIC CORPORATION JP 6,503
  9. ZHEJIANG UNIVERSITY 6,414
  10. DENSO CORPORATION JP 6,382