Inventor

DOBREZ JOHN F

US4 patents

Patents

4 patents

US4357243ANov 2, 1982

Metal-working emulsion reclaiming process

DOBER CHEMICAL CORP13 citations71

US4980075ADec 25, 1990

Coolant filter composition

DOBER CHEMICAL CORP14 citations69

US4842731AJun 27, 1989

Coolant filter manufacture and composition for use in same

DOBER CHEMICAL CORP7 citations69

US5609693AMar 11, 1997

Methods for removing acrylic-based polymer coatings

DOBER CHEMICAL CORP11 citations67