Impregnation, coating or precipitation ( ; protection by coating B01J33/00)

Introduced: July 1974

Title

Titles differ between systems:

IPC: Impregnation, coating or precipitation

CPC: Impregnation, coating or precipitation ( ; protection by coating B01J33/00)

Full Title

Full titles differ between systems:

IPC:

Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts > Impregnation, coating or precipitation

CPC:

Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts > Impregnation, coating or precipitation ( ; protection by coating B01J33/00)

CPC subdivides this area 4x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions, 1 exist only in IPC.

IPC defines codes here since 1985.

Child Classifications

Navigate with arrow keys, Enter to open

B01J 37/0201 +6 CPC CPC only CPC only
B01J 37/0215 +7 CPC CPC only CPC only
B01J 37/0234 CPC only CPC only
B01J 37/0236 CPC only CPC only
B01J 37/0238 CPC only CPC only
B01J 37/024 +4 CPC CPC only CPC only
B01J 37/025 using a distinct intermediate layer, e.g. substrate-support-active layer since 1995 IPC only IPC only
B01J 37/03 Precipitation; Co-precipitation since 1985 +3 CPC IPC+CPC Available in IPC and CPC