Patent US5840454 - Aromatic polycarbonate and electrophotographic photosensitive medium using same - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsAn aromatic polycarbonate containing a structural unit of the formula: ##STR1## wherein R1 is a hydrogen atom, a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl