using electric radiation detectors

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Spectrometry; Spectrophotometry; Monochromators; Measuring colours > Measurement of colour; Colour measuring devices, e.g. colorimeters > using electric radiation detectors

CPC:

Spectrometry; Spectrophotometry; Monochromators; Measuring colours > Measurement of colour; Colour measuring devices, e.g. colorimeters (measuring colour temperature G01J5/60) > using electric radiation detectors

CPC subdivides this area 9x more granularly than IPC with 8 additional codes.

8 codes are CPC-only extensions.

Note: 2 CPC extensions are marked as secondary classification only.

IPC defines codes here since 1985.

Child Classifications

Navigate with arrow keys, Enter to open

G01J 2003/503 2nd only CPC only CPC only
G01J 2003/507 2nd only CPC only CPC only
G01J 3/501 CPC only CPC only
G01J 3/502 CPC only CPC only
G01J 3/504 CPC only CPC only
G01J 3/505 CPC only CPC only
G01J 3/506 CPC only CPC only
G01J 3/508 CPC only CPC only
G01J 3/51 using colour filters since 1985 +1 CPC IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class G01,2013–2023, worldwide · Source: EPO PATSTAT

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