Inventor

ZIMMERMANN FRANZ

DE4 patents

⚠️ This page may combine multiple inventors who share the name “ZIMMERMANN FRANZ”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GRETAG AG

2 patents

US4251156AFeb 17, 1981

Method of and apparatus for making photographic prints

GRETAG AG36 citations89

US4279505AJul 21, 1981

Method for print exposure control

GRETAG AG18 citations70

BAYER AG

2 patents

US4837265AJun 6, 1989

Process for the preparation of stabilized polyamides

BAYER AG13 citations68

US5059643AOct 22, 1991

Stabilized polyamides

BAYER AG3 citations58