Patents by Inventor Gerd Rollar

Gerd Rollar 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).

  • NEW CRYSTAL FORM OF AN ORGANIC FLUORESCENT COMPOUND
    Publication number: 20220332715
    Abstract: The present invention relates to a new crystal form of the compound of formula and a process for its preparation. The compound may be used in compositions for inks, paints and plastics, especially in a wide variety of printing systems and is particularly well-suited for security applications.
    Type: Application
    Filed: August 13, 2020
    Publication date: October 20, 2022
    Inventors: Helmut REICHELT, Christian DOERR, Gerd ROLLAR, Hans REICHERT, Oliver SEEGER, Korinna DORMANN
  • METHOD FOR PRODUCING LIQUID ADJUSTMENTS OF BASIC AZO DYES
    Publication number: 20070213514
    Abstract: A process for producing a liquid formulation of a basic azo dye from a phenylenediamine I, which may be alkyl or alkoxy substituted, by diazotizing and coupling in acidic solution comprises diazotizing the phenylenediamine with sodium nitrite in the presence of at least two organic acids comprising at least one first acid (A) having a pkA value of ?40 and at least a second acid (B) having a pKA value ?4.1 and performing a nanofiltration after the coupling has ended.
    Type: Application
    Filed: May 18, 2005
    Publication date: September 13, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Michael Schmitt, Jurgen Decker, Helmut Reichelt, Gerd Rollar, Armin Diefenbacher, Hartwig Voss