IPC Subgroup
B01D 39/18 the material being cellulose or derivatives thereof
Introduced: September 1968
Last revised: January 2006
Full Title
Filtering material for liquid or gaseous fluids > Other self-supporting filtering material > of organic material, e.g. synthetic fibres > the material being cellulose or derivatives thereof
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- Subclass:
- SEPARATION