Patents by Inventor Heidrun Schene

Heidrun Schene 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
  • Concentrated dye solutions
    Patent number: 7686851
    Abstract: The present invention concerns concentrated storage-stable aqueous dye solutions comprising a) 5% to 30% by weight of a dye of the formula ?where K is a coupling component of the acetoacetanilide, pyridone, pyrazolone or pyrimidine series, and b) 0.1 to 0.9 mol of aminoalkoxy alcohols or monoalkanolamines per mole of dye of the formula (1) and c) 0 to 3 mol of trialkanolamine per mole of dye of the formula (1).
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: March 30, 2010
    Assignee: Clariant Finance (BVI) Limited
    Inventor: Heidrun Schene
  • 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
  • Concentrated dye solutions
    Publication number: 20070186805
    Abstract: The present invention concerns concentrated storage-stable aqueous dye solutions comprising a) 5% to 30% by weight of a dye of the formula ?where K is a coupling component of the acetoacetanilide, pyridone, pyrazolone or pyrimidine series, and b) 0.1 to 0.9 mol of aminoalkoxy alcohols or monoalkanolamines per mole of dye of the formula (1) and c) 0 to 3 mol of trialkanolamine per mole of dye of the formula (1).
    Type: Application
    Filed: March 4, 2005
    Publication date: August 16, 2007
    Inventor: Heidrun Schene
  • Basic mono- and bisazo compounds
    Patent number: 7183409
    Abstract: The invention relates to basic mono- and 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: May 29, 2002
    Date of Patent: February 27, 2007
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Friedrich Lehr, Reinhard Pedrazzi, Heidrun Schene
  • Basic mono-and bisazo compounds
    Publication number: 20040158049
    Abstract: The invention relates to basic mono- and bisazo compounds according to formula (I) 1
    Type: Application
    Filed: November 25, 2003
    Publication date: August 12, 2004
    Inventors: Friedrich Lehr, Reinhard Pedrazzi, Heidrun Schene