P

Inventor

GUMBINNER ROBERT

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

POLYCHROME CORP

3 patents
US3935080AJan 27, 1976

Method of producing an aluminum base sheet for a printing plate

POLYCHROME CORP39 citations91
US4052275AOct 4, 1977

Process for electrolytic graining of aluminum sheet

POLYCHROME CORP28 citations80
US4129486ADec 12, 1978

Ultraviolet curing printing inks having improved shelf life

POLYCHROME CORP26 citations76

GUMBINNER ROBERT

1 patent
US4777109AOct 11, 1988

RF plasma treated photosensitive lithographic printing plates

GUMBINNER ROBERT11 citations67

H T PRODUCTS INC

1 patent
US4942421AJul 17, 1990

Method of preventing bending of lithographic printing plates

H T PRODUCTS INC5 citations59