Patents by Inventor Hendrik H. Sneyers

Hendrik H. Sneyers 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).

  • Photoconductive recording material containing a zinc oxide particle and a metallic mercapto compound
    Patent number: 4282299
    Abstract: An electrophotographic recording material comprising a photoconductive layer incorporating photoconductive zinc oxide in the presence of a compound within the scope of the following general formula:R--SHwherein: R represents (1) an unsubstituted aliphatic hydrocarbon group containing at least 5 carbon atoms or (2) an aliphatic hydrocarbon group substituted with a --COOQ group wherein Q is an organometallic group or an aliphatic hydrocarbon group, containing at least 5 carbon atoms, or (3) an aliphatic hydrocarbon group substituted with a --COOH group and containing at least two methylene groups between the --COOH group and the --SH group, and said general formula including the modification wherein the hydrogen atom of the --SH group is substituted to form an organometal mercaptide.The above compound improves the charge retention of the photoconductive layer, i.e. lowers its dark-decay, under conditions of high relative humidity.
    Type: Grant
    Filed: September 7, 1978
    Date of Patent: August 4, 1981
    Assignee: Agfa-Gevaert N.V.
    Inventors: Andre R. Suys, Hendrik H. Sneyers