Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials

Introduced: September 1968

CPC subdivides this area 3x more granularly than IPC with 9 additional codes.

9 codes are CPC-only extensions.

Note: 9 CPC extensions are marked as secondary classification only.

4 shared codes have differing titles between IPC and CPC.

Child Classifications

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G01N 15/01 specially adapted for biological cells, e.g. blood cells (investigating sedimentation of particle suspensions in blood G01N15/05) since 2024 +5 CPC IPC+CPC Available in IPC and CPC
G01N 15/02 Investigating particle size or size distribution (by measuring osmotic pressure G01N7/10; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10) +7 CPC IPC+CPC Available in IPC and CPC
G01N 15/04 Investigating sedimentation of particle suspensions +1 CPC IPC+CPC Available in IPC and CPC
G01N 15/06 Investigating concentration of particle suspensions (by weighing G01N5/00; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10) +8 CPC IPC+CPC Available in IPC and CPC
G01N 15/08 Investigating permeability, pore-volume, or surface area of porous materials +10 CPC IPC+CPC Available in IPC and CPC
G01N 15/10 Investigating individual particles since 1985 +12 CPC IPC+CPC Available in IPC and CPC
G01N 2015/0003 2nd only CPC only CPC only
G01N 2015/0007 2nd only +2 CPC CPC only CPC only
G01N 2015/0019 2nd only CPC only CPC only
G01N 2015/0023 2nd only +3 CPC CPC only CPC only
G01N 2015/0038 2nd only CPC only CPC only
G01N 2015/0042 2nd only +3 CPC CPC only CPC only
G01N 2015/0092 2nd only CPC only CPC only
G01N 2015/0096 2nd only CPC only CPC only
G01N 2015/03 2nd only +1 CPC CPC only CPC only