Inventor

PITTEL BERND

US2 patents

Patents

2 patents

US5198525AMar 30, 1993

Aromatic copolyether sulfones

BAYER AG12 citations69

US5115076AMay 19, 1992

Aromatic copolyether ketones of dihydroxydiphenyl alkanes and phthaleins and a process for their production

BAYER AG9 citations69