This is also just interesting.Otto Röhm and Walter Bauer and was first brought to market in 1933 by the Rohm and Haas Company under the trademark Plexiglas.
I know these aren't much help specifically, but it's good context.Polycarbonates were first discovered in 1898 by Alfred Einhorn, a German scientist working at the University of Munich.[18] However, after 30 years of laboratory research, this class of materials was abandoned without commercialization. Research resumed in 1953, when Hermann Schnell at Bayer in Uerdingen, Germany patented the first linear polycarbonate. The brand name "Makrolon" was registered in 1955.
...Polycarbonate is also known by a variety of trademarked names, including Lexan, Makrolon, and others.