Patents by Inventor Kartin Joschek

Kartin Joschek 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).

  • Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate
    Patent number: 7202384
    Abstract: The present invention relates to a process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1,5-naphthalenediamine and 1,5-naphthalene diisocyanate, in which 4-(2-nitrophenyl)-n-butyronitrile is converted to 4-(2-nitrophenyl)-n-butyric acid.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: April 10, 2007
    Assignee: Bayer MaterialScience Aktiengesellschaft
    Inventors: Joachim Zechlin, Kai Verkerk, Dietmar Wastian, Kartin Joschek, Tim Loddenkemper, Wilfried Pinke, Michael Schelhaas, Georg Ronge