Patents by Inventor Paul Gunthert

Paul Gunthert 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).

  • Method for the production of dyestuff pastes
    Patent number: 6980292
    Abstract: The invention relates to a method of producing color pastes, in which a component comprising colorant particles is dispersed in a binder. In the method of the invention the dispersing operation is controlled by beaming excitational light of a defined wavelength range into a mixture of the component comprising colorant particles and the binder, detecting the light transmitted, reflected and/or scattered by the mixture and determining a sample spectrum, evaluating the sample spectrum and hence determining parameters of the color paste, and monitoring changes in the sample spectrum over time and terminating the dispersing operation when predetermined target parameters are attained.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: December 27, 2005
    Assignee: BASF Coatings AG
    Inventors: Claudia Sierakowski, Ines Mangels, Zenon-Paul Czornij, Thomas Krüger, Peter Hoffmann, Thomas Frey, Benno Sens, Manfred Mielke, Paul Günthert, Gerhard Berger, Peter Blaschka, Günter Etzrodt
  • Method for the production of dyestuff pastes
    Publication number: 20050002027
    Abstract: The invention relates to a method of producing color pastes, in which a component comprising colorant particles is dispersed in a binder. In the method of the invention the dispersing operation is controlled by beaming excitational light of a defined wavelength range into a mixture of the component comprising colorant particles and the binder, detecting the light transmitted, reflected and/or scattered by the mixture and determining a sample spectrum, evaluating the sample spectrum and hence determining parameters of the color paste, and monitoring changes in the sample spectrum over time and terminating the dispersing operation when predetermined target parameters are attained.
    Type: Application
    Filed: November 22, 2002
    Publication date: January 6, 2005
    Inventors: Claudia Sierakowski, Ines Mangels, Zenon -Paul Czornij, Thomas Kruger, Peter Hoffmann, Thomas Frey, Benno Sens, Manfred Franz Mielke, Paul Gunthert, Gerhard Berger, Peter Blaschka, Gunter Etzrodt
  • Perylene-derivative based crystallization modifiers
    Publication number: 20040200388
    Abstract: Perylene derivatives of the general formula I 1
    Type: Application
    Filed: May 6, 2004
    Publication date: October 14, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Claus Hackmann, Paul Gunthert, Anton Dotter, Peter Blaschka
  • Perylene-derivative based crystallization modifiers
    Patent number: 6784301
    Abstract: Perylene derivatives of the general formula I where X and Y are independently oxygen, —NR1 or —NR2; R1 and R2 are independently hydrogen, C1-C18-alkyl, C5-C7-cycloalkyl, aryl or C1-C6-alkoxy; R3 to R10 are independently hydrogen, hydroxyl or aryl, although radicals conjointly attached to one carbon atom may also be ═O or ═CHR11, R11 is hydrogen or C1-C3-alkyl, with the proviso that said perylene derivative I contains from at least one to not more than three carbonyl groups per molecule.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: August 31, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Claus Hackmann, Paul Günthert, Anton Dotter, Peter Blaschka
  • 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
  • Perylene-derivative based crystallization modifiers
    Publication number: 20030106463
    Abstract: Perylene derivatives of the general formula I 1
    Type: Application
    Filed: September 11, 2002
    Publication date: June 12, 2003
    Inventors: Claus Hackman, Paul Gunthert, Anton Dotter, Peter Blaschka