Ion-conducting and ion-conductive polymers, polymer solutions, polymer membranes and polymer membrane assemblies as component of devices, apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity and hydrogen, in particular fuel cells and electrolysers.

Ion-conducting and ion-conductive polymers, polymer solutions, polymer membranes and polymer membrane assemblies as component of hydrogen generators for industrial purposes.

Ion-conducting and ion-conductive polymers, polymer solutions, polymer membranes and polymer membrane assemblies (plastics in extruded form for use in manufacture).