IPC Definitions - January 01, 2012
C09K 13/00 - Definition
References relevant to classification in this main group
This main group does not cover:
Etching of glass | C03C 15/00 |
Etching of natural stone, artificial stone or ceramics | C04B 41/52, C04B 41/72, C04B 41/91 |
Etching or brightening of metallic material | C23F, C23G 1/00, C25F 1/00 |
Special rules of classification
In groups C09K 13/02-C09K 13/12, a composition is classified in the last appropriate place.