Inventor
PLIEFKE ENGELBERT
DE27 patents
⚠️ This page may combine multiple inventors who share the name “PLIEFKE ENGELBERT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOECHST AG
24 patentsUS4840713AJun 20, 1989
Process for the electrochemical roughening of aluminum for use in printing plate supports
HOECHST AG32 citations92
US5156723AOct 20, 1992
Process for electrochemical roughening of aluminum for printing plate supports
HOECHST AG41 citations91
US4492616AJan 8, 1985
Process for treating aluminum oxide layers and use in the manufacture of offset-printing plates
HOECHST AG29 citations91
US4671859AJun 9, 1987
Process for the electrochemical graining of aluminum for use as printing plate supports
HOECHST AG21 citations82
US4482434ANov 13, 1984
Process for electrochemically roughening aluminum for printing plate supports
HOECHST AG22 citations82
US4840709AJun 20, 1989
Single-stage electrochemical image-forming process for reproduction layers
HOECHST AG8 citations74
US4834844AMay 30, 1989
Process for the selective additive correction of voids in copying layers
HOECHST AG8 citations74
US4786381ANov 22, 1988
Process for electrochemically modifying support materials of aluminum or aluminum alloys, which have been grained in a multi-stage process and use of these materials in the manufacture of offset-printing plates
HOECHST AG13 citations74
US4725526AFeb 16, 1988
Process for reducing halations using lubricant in the course of irradiating and developing reproduction layers used for preparing printing plates
HOECHST AG7 citations74
US4666576AMay 19, 1987
Process for the electrochemical roughening of aluminum for use in printing plate supports
HOECHST AG10 citations74
US4661219AApr 28, 1987
Process for the electrochemical roughening of aluminum for use in printing plate supports
HOECHST AG16 citations74
US4619742AOct 28, 1986
Process for the simultaneous graining and chromium-plating of steel plates as supports for lithographic applications
HOECHST AG9 citations74
US4566958AJan 28, 1986
Process for electrochemical roughening of aluminum useful for printing plate supports, in an aqueous mixed electrolyte
HOECHST AG13 citations74
US4549944AOct 29, 1985
Electrochemical developing process for reproduction layers
HOECHST AG8 citations74
US4468295AAug 28, 1984
Process for electrochemically roughening aluminum for printing plate supports
HOECHST AG15 citations74
US5302460AApr 12, 1994
Support material for offset-printing plates in the form of a sheet, a foil or a web process for its production and offset-printing plate comprising said material
HOECHST AG8 citations73
US5262244ANov 16, 1993
Hydrophilic copolymers and their use in reprography
HOECHST AG18 citations72
US5178961AJan 12, 1993
Thermally crosslinkable hydrophilic copolymers and their use in reprography
HOECHST AG9 citations72
US5178963AJan 12, 1993
Hydrophilic copolymers and their use in reprography
HOECHST AG13 citations72
US4824535AApr 25, 1989
Process for the electrochemical graining of aluminum for use in printing plate supports
HOECHST AG4 citations63
US4684594AAug 4, 1987
Electrophotographic process for preparing printing forms using alkaline decoater solution
HOECHST AG2 citations63
US4614570ASep 30, 1986
Single-stage electrochemical image-forming process for reproduction layers
HOECHST AG5 citations63
US4614571ASep 30, 1986
Process for electrochemically graining steel plates used as offset printing plate supports, and an electrolyte solution suitable for the process
HOECHST AG3 citations63
US5219664AJun 15, 1993
Hydrophilic copolymers and their use in reprography
HOECHST AG2 citations61