Patents by Inventor Juergen Lingnau

Juergen Lingnau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrophotographic recording material having a photoconductive double layer, and process for its manufacture
    Patent number: 4654283
    Abstract: Disclosed is an electrophotographic recording material comprising a photoconductive double layer disposed on an electrically conductive support, which double layer comprises a precoat layer and a photoconductor-containing topcoat layer. The interface region of the precoat and topcoat layers defines a mixing zone into which one or more of the constituents of the separate layers have diffused. A process for producing the electrophotographic recording material is also disclosed.
    Type: Grant
    Filed: August 14, 1984
    Date of Patent: March 31, 1987
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Karl-Friedrich Doessel, Juergen Lingnau