Patents by Inventor Ludwig Hasemann

Ludwig Hasemann 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).

  • Basic bisazo compounds
    Patent number: 8921564
    Abstract: The invention relates to basic bisazo compounds according to formula (I) wherein all substituents are defined as in Claim 1, their production, their use as dyestuffs as well as material dyed with these dyestuffs.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: December 30, 2014
    Assignee: Clariant Finance (BVI) Ltd.
    Inventors: Ludwig Hasemann, Friedrich Lehr, Martin Oberholzer, Heidrun Schene
  • Stable liquid formulation
    Patent number: 8328925
    Abstract: The present invention concerns concentrated aqueous solutions of an anionic disazo dye, comprising salts and or the free acids of the anionic dye of the formula (I) and 2-(2-butoxyethoxy)ethanol and the use of these solutions for dyeing and/or printing hydroxyl-containing substrates and for producing inkjet inks.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: December 11, 2012
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Ludwig Hasemann
  • Stable Liquid Formulation
    Publication number: 20100167028
    Abstract: The present invention concerns concentrated aqueous solutions of an anionic disazo dye, comprising salts and or the free acids of the anionic dye of the formula (I) and 2-(2-butoxyethoxy)ethanol and the use of these solutions for dyeing and/or printing hydroxyl-containing substrates and for producing inkjet inks.
    Type: Application
    Filed: May 21, 2008
    Publication date: July 1, 2010
    Applicant: CLARIANT FINANCE (BVI) LIMITED
    Inventor: Ludwig Hasemann
  • Basic Bisazo Compounds
    Publication number: 20100000033
    Abstract: The invention relates to basic bisazo compounds according to formula (I) wherein all substituents are defined as in Claim 1, their production, their use as dyestuffs as well as material dyed with these dyestuffs.
    Type: Application
    Filed: July 25, 2007
    Publication date: January 7, 2010
    Applicant: Clariant Finance (BVI) Limited
    Inventors: Ludwig Hasemann, Friedrich Lehr, Martin Oberholzer, Heidrun Schene
  • Stable liquid formulations of anionic dyes
    Patent number: 7553359
    Abstract: The present invention concerns concentrated aqueous solutions of anionic disazo dyes, comprising salts and or the free acids of anionic dyes of the formula and 2-(2-butoxyethoxy) ethanol wherein the substituents are each as defined in claim 1 and the use of these solutions for dyeing and/or printing hydroxyl-containing substrates and for producing inkjet inks.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: June 30, 2009
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Jordi Berenguer, Ludwig Hasemann, Joan Bosch, Susana Basolas
  • Mono azo dyes
    Patent number: 7416593
    Abstract: The invention relates to novel azo dyestuffs of formula (I), the use of such compounds and/or mixtures for printing recording materials, especially paper or papery substrates, textile fiber materials, plastic films and plastic transparencies by the inkjet printing process and also to the recording materials printed thereby
    Type: Grant
    Filed: November 11, 2003
    Date of Patent: August 26, 2008
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Ludwig Hasemann
  • Stable Liquid Formulations of Anionic Dyes
    Publication number: 20080194815
    Abstract: The present invention concerns concentrated aqueous solutions of anionic disazo dyes, comprising salts and or the free acids of anionic dyes of the formula and 2-(2-butoxyethoxy) ethanol wherein the substituents are each as defined in claim 1 and the use of these solutions for dyeing and/or printing hydroxyl-containing substrates and for producing inkjet inks.
    Type: Application
    Filed: May 12, 2005
    Publication date: August 14, 2008
    Applicant: CLARIANT INTERNATIONAL LTD.
    Inventors: Jordi Berenguer, Ludwig Hasemann, Joan Bosch, Susana Basolas
  • Acidic monoazo dyestuffs
    Publication number: 20070151479
    Abstract: Disclosed are novel dyestuff of the formula (I) wherein all substituents are defined in the claims. These dyestuffs are useful for printing or dyeing substrates, especially textile fibre materials, paper and papery substrates and plastic films and plastic transparencies.
    Type: Application
    Filed: December 23, 2004
    Publication date: July 5, 2007
    Inventor: Ludwig Hasemann
  • Storagestable concentrated aqueous solutions of anionic dis-or tetrazo dyestuffs
    Publication number: 20070083040
    Abstract: The present invention concerns concentrated aqueous solutions of anionic disazo dyes, comprising salts and/or the free acids of anionic dyes of the formula and at least one polyoxyalkyleneamine wherein the substituents are each as defined in Claim 1 and the use of these solutions for dyeing and/or printing hydroxyl-containing substrates and for producing inkjet inks.
    Type: Application
    Filed: October 26, 2004
    Publication date: April 12, 2007
    Inventor: Ludwig Hasemann
  • Use of a dyestuff for ink jet printing recording materials
    Patent number: 7153332
    Abstract: Disclosed are dyestuff mixtures for printing recording materials, especially textile fibre materials, paper and papery substrates and plastic films and plastic, as well as compositions suitable for ink-jet printing comprising a dyestuff of the formula (I)
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: December 26, 2006
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Ludwig Hasemann
  • Acidic mono azo dyestuffs
    Patent number: 7097702
    Abstract: Disclosed are novel dyestuff for printing recording materials, especially textile fiber materials, paper and papery substrates and plastic films and plastic transparencies by the inkjet printing process of the formula (I) wherein all substituents are defined in the claims.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: August 29, 2006
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Ludwig Hasemann
  • Mono azo dyes
    Publication number: 20060101595
    Abstract: The invention relates to novel azo dyestuffs of formula (I), the use of such compounds and/or mixtures for printing recording materials, especially paper or papery substrates, textile fibre materials, plastic films and plastic transparencies by the inkjet printing process and also to the recording materials printed thereby.
    Type: Application
    Filed: November 11, 2003
    Publication date: May 18, 2006
    Inventor: Ludwig Hasemann
  • Composition for printing recording materials
    Publication number: 20050174410
    Abstract: Disclosed are compositions for printing recording materials, especially textile fibre materials, paper and papery substrates and plastic films and plastic transparencies by the inkjet printing process which does not show catalytic fading.
    Type: Application
    Filed: April 10, 2003
    Publication date: August 11, 2005
    Inventors: Ludwig Hasemann, Stefan Schlosser, Reinhard Pedrazzi
  • Acidic mono azo dyestuffs
    Publication number: 20050172856
    Abstract: Disclosed are novel dyestuff for printing recording materials, especially textile fiber materials, paper and papery substrates and plastic films and plastic transparencies by the inkjet printing process of the formula (I) wherein all substituents are defined in the claims.
    Type: Application
    Filed: December 18, 2002
    Publication date: August 11, 2005
    Inventor: Ludwig Hasemann
  • Use of a dyestuff for ink jet printing recording materials
    Publication number: 20050120495
    Abstract: Disclosed are dyestuff mixtures for printing recording materials, especially textile fibre materials, paper and papery substrates and plastic films and plastic, as well as compositions suitable for ink-jet printing comprising a dyestuff of the formula (I)
    Type: Application
    Filed: December 18, 2002
    Publication date: June 9, 2005
    Inventor: Ludwig Hasemann
  • Use of disazo compounds
    Patent number: 6844428
    Abstract: The invention relates to the use of disazo compounds according to formula (I) wherein all substituents are as defined in claim 1 salts thereof and mixtures of these compounds for dyeing or printing organic substrates, to novel compounds, to the process for the production of these compounds and to substrates dyed or printed by these compounds.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: January 18, 2005
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Ludwig Hasemann, Friedrich Lehr
  • Use of disazo compounds
    Publication number: 20040111813
    Abstract: The invention relates to the use of disazo compounds according to formula (I) 1
    Type: Application
    Filed: June 3, 2003
    Publication date: June 17, 2004
    Inventors: Ludwig Hasemann, Friedrich Lehr
  • Composition for printing recording materials
    Publication number: 20030060608
    Abstract: Disclosed are compositions for printing recording materials, especially textile fibre materials, paper and papery substrates and plastic films and plastic transparencies by the inkjet printing process, including
    Type: Application
    Filed: September 20, 2002
    Publication date: March 27, 2003
    Inventors: Ludwig Hasemann, Reinhard Pedrazzi, Josef Geisenberger, Josef Ritter, Hans-Tobias Macholdt, Andreas Wuzik
  • Organic compounds
    Patent number: 6406525
    Abstract: New dioxazine compounds and mixtures thereof containing sulphonic acid groups according to formula (I) in which the substituents have the meanings given in claim 1, processes for their production and the use of such compounds for dyeing or printing organic substrates or as a component of printing inks.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: June 18, 2002
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Ludwig Hasemann
  • Triphendioxazine compounds
    Patent number: 6302923
    Abstract: Compounds of formula (I) with the meanings of R1, R1′, R2, R2′, X, X′, Y, Y′, m and n as given in claim 1 can be used as paper dyes or direct dyes or for the preparation of ink-jet inks.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: October 16, 2001
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Ludwig Hasemann