Inventor
EFFER ERHARD
DE3 patents
Patents
3 patentsUS6171525B1Jan 9, 2001
Process for the production of a photochromic object
RODENSTOCK OPTIK G60 citations94
US4852974AAug 1, 1989
Anti-reflection film for an optical element consisting of an organic material
RODENSTOCK OPTIK G82 citations94
US5498686AMar 12, 1996
Optically transparent photochromic plastic material
RODENSTOCK OPTIK G53 citations92