Patents by Inventor Jorg Langer

Jorg Langer 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).

  • Security paper and method for the production thereof
    Publication number: 20070017647
    Abstract: The invention relates to a security paper for producing value documents, such as bank notes, passports, identification documents or the like, having a flat substrate (12) provided at least partly with a dirt-repellent protective layer (14) for extending the life time and fitness for circulation. According to the invention, the protective layer (14) comprises at least two lacquer layers (16, 18), a first lower lacquer layer (16) being formed by a physically drying lacquer layer applied to the substrate (12) which makes contact with the substrate (12) therebelow and closes its pores, and a second upper lacquer layer (18) being present which protects the substrate (12) from physical and chemical influences.
    Type: Application
    Filed: February 3, 2004
    Publication date: January 25, 2007
    Applicant: GIESECKE & DEVRIENT GMBH
    Inventors: Klaus Habik, Christoph Mengel, Jorg Langer
  • Method of recovering regenerated sizes
    Patent number: 5080687
    Abstract: Process for working up regenerated sizes by adding oxidative chlorine-containing compounds, in particular sodium chlorite. These compounds have the effect in the regenerated size of oxidatively brightening the interfering dark-colored impurities.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: January 14, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Jorg Langer, Gunter Rosch, Heinz E. Schneider