IPC Definitions - January 01, 2012

B01D 53/22 - Definition fr

Informative references

Attention is drawn to the following places, which may be of interest for search:

Manufacturing semi-permeable membranes

B01D 67/00

Form, structure or properties of semi-permeable membranes

B01D 69/00

Material for semi-permeable membranes

B01D 71/00