Top IPC subclasses
1
|
C08F
|
3
|
macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
|
2
|
B01J
|
2
|
Chemical or physical processes, e.g. catalysis, colloid chemistry; their relevant apparatus
|
3
|
C08J
|
1
|
working-upgeneral processes of compoundingafter-treatment not covered by subclasses , , , or
|