Inventor
WIEDEMANN WOLFGANG
28 patents
⚠️ This page may combine multiple inventors who share the name “WIEDEMANN WOLFGANG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOECHST AG
17 patentsUS3972717AAug 3, 1976
Electrophotographic recording material
HOECHST AG102 citations96
US4714666ADec 22, 1987
Perylene tetracarboxylic acid imide pigments in an electrophotographic recording material
HOECHST AG37 citations92
US4390609AJun 28, 1983
Electrophotographic recording material with abrasion resistant overcoat
HOECHST AG40 citations92
US3992205ANov 16, 1976
Electrophotographic recording material containing a plurality of dyes with different spectral absorbtion characteristics
HOECHST AG44 citations92
US4650737AMar 17, 1987
Electrophotographic recording material containing benzimidazole derivative
HOECHST AG24 citations82
US4472491ASep 18, 1984
Electrophotographic recording material having protective layer and process for the production thereof
HOECHST AG21 citations82
US5151342ASep 29, 1992
Multilayer recording medium for optical information
HOECHST AG9 citations74
US4666812AMay 19, 1987
Electrophotographic material with pyrimido-pyridobenzimidazole compound
HOECHST AG12 citations74
US4315981AFeb 16, 1982
Organic double layer electrophotographic recording material
HOECHST AG11 citations74
US4220697ASep 2, 1980
Electrophotographic recording material
HOECHST AG9 citations74
US3982937ASep 28, 1976
Electrophotographic recording material
HOECHST AG6 citations74
US3973959AAug 10, 1976
Electrophotographic recording material and process for its manufacture
HOECHST AG16 citations73
US4725520AFeb 16, 1988
Electrophotographic recording material
HOECHST AG2 citations63
US4224395ASep 23, 1980
Electrophotographic recording material with cellulose acyl ester binder
HOECHST AG2 citations63
US4818653AApr 4, 1989
Electrophotographic recording material with mopomeril alleptor additive
HOECHST AG4 citations58
US4530892AJul 23, 1985
Electrophotographic recording material for printing forms
HOECHST AG0 citations52
US4762760AAug 9, 1988
Electrophotographic recording material comprising a pyrazoline derivative
HOECHST AG1 citations48
WASAGCHEMIE AG
3 patentsUS4083912AApr 11, 1978
Process for the compression of black powder
WASAGCHEMIE AG17 citations70
US4040570AAug 9, 1977
Preparation of uniform black powder granules
WASAGCHEMIE AG8 citations70
US3937770AFeb 10, 1976
Method for the production of mealy crude black powder which can be further processed
WASAGCHEMIE AG5 citations59
AGFA GEVAERT AG
2 patentsUS5556531ASep 17, 1996
Process for the aftertreatment of aluminum materials substrates of such materials and their use for offset printing plates
AGFA GEVAERT AG29 citations92
US5770315AJun 23, 1998
Process for the aftertreatment of aluminum materials, substrates of such materials, and their use for offset printing plates
AGFA GEVAERT AG13 citations74