Patents by Inventor Richard Lehner

Richard Lehner 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
    Patent number: 4026704
    Abstract: This invention relates to an electrophotographic recording material comprising an electrically conducting carrier and a photoconducting laminate thereon, the latter comprising a base layer and a top layer each containing an organic photoconductor, binder and sensitizer, at least one organic photoconductor being common to both of said top and base layers and the base layer containing a bisazo dyestuff.
    Type: Grant
    Filed: August 12, 1975
    Date of Patent: May 31, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jurgen Rochlitz, Richard Lehner