Investigating particle size or size distribution (by measuring osmotic pressure G01N7/10; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Investigating particle size or size distribution

CPC: Investigating particle size or size distribution (by measuring osmotic pressure G01N7/10; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10)

Full Title

Full titles differ between systems:

IPC:

Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials > Investigating particle size or size distribution

CPC:

Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials > Investigating particle size or size distribution (by measuring osmotic pressure G01N7/10; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10)

Additional Content IPC

Investigating particle size or size distribution by measuring osmotic pressure Investigating sedimentation of particle suspensions Investigating individual particles

CPC subdivides this area 8x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

Note: 4 CPC extensions are marked as secondary classification only.

IPC defines codes here since 2024.

Child Classifications

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G01N 15/0205 by optical means since 2024 +4 CPC IPC+CPC Available in IPC and CPC
G01N 15/0255 +1 CPC CPC only CPC only
G01N 15/0266 CPC only CPC only
G01N 15/0272 CPC only CPC only
G01N 2015/0277 2nd only CPC only CPC only
G01N 2015/0283 2nd only CPC only CPC only
G01N 2015/0288 2nd only CPC only CPC only
G01N 2015/0294 2nd only CPC only CPC only

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