Inventor

SORKIN JACK L

US3 patents

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

RICHARDSON GRAPHIC CO

2 patents

US4486526ADec 4, 1984

Lithographic plate and photoresist having photosensitive layers of diazo and cinnamoylated phenol-blocked isocyanate polyurethane materials

RICHARDSON GRAPHIC CO4 citations58

US4330611AMay 18, 1982

Lithographic plate and photoresist having photosensitive layers of diazo and cinnamoylated polyvinyl alcohol materials

RICHARDSON GRAPHIC CO1 citations47

RICHARDSON CHEMICAL CO

1 patent

US4133685AJan 9, 1979

Lithographic plate and photoresist having photosensitive layers of diazo and cinnamoylated polyvinyl alcohol materials

RICHARDSON CHEMICAL CO3 citations58