Patents by Inventor Gunter Smeyts

Gunter Smeyts 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).

  • Transparent greenish yellow pyrazolone pigments
    Patent number: 6784286
    Abstract: The invention relates to pyrazolone pigments of general formula (I), wherein the radicals R1, R2, R3 and R4 independently represent hydrogen, chlorine, methyl or ethyl, whereby at least one of the radicals R1-R4 is different from hydrogen. The inventive pigments are characterised by a CIELAB colour angle of 80-85°, a chroma of 58-62 and a luminosity ≧87 (measuring angle 45°, standard illuminant D65).
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: August 31, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Blaschka, Günter Smeyts, Paul Günthert
  • Transparent greenish yellow pyrazolone pigments
    Publication number: 20040039183
    Abstract: The invention relates to pyrazolone pigments of general formula (I), wherein the radicals R1, R2, R3 and R4 independently represent hydrogen, chlorine, methyl or ethyl, whereby at least one of the radicals R1-R4 is different from hydrogen. The inventive pigments are characterised by a CIELAB colour angle of 80-85°, a chroma of 58-62 and a luminosity ≧87 (measuring angle 45°, standard illuminant D65).
    Type: Application
    Filed: June 13, 2003
    Publication date: February 26, 2004
    Inventors: Peter Blaschka, Gunter Smeyts, Paul Gunthert