Wolfgang Wiedemann

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Geisenheim-Johannisberg, DT

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Patents Grantslast 30 patents

Information Patent Grant
Electrophotographic recording material containing a plurality of dy...
- Patent number 3,992,205
- Issue date Nov 16, 1976
- Hoechst Aktiengesellschaft
- Wolfgang Wiedemann
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic recording material
- Patent number 3,982,937
- Issue date Sep 28, 1976
- Hoechst Aktiengesellschaft
- Wolfgang Wiedemann
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic recording material and process for its manufacture
- Patent number 3,973,959
- Issue date Aug 10, 1976
- Hoechst Aktiengesellschaft
- Jurgen Rochlitz
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic recording material
- Patent number 3,972,717
- Issue date Aug 3, 1976
- Hoechst Aktiengesellschaft
- Wolfgang Wiedemann
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY