Patents by Inventor Gunter Klug

Gunter Klug 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).

  • Use of Micronized Cellulose and Fluorescent Whitening Agent for Surface Treatment of Cellulosic Materials
    Publication number: 20160060814
    Abstract: A combination of micronized cellulose and fluorescent whitening agents for surface treatment of cellulosic sheet-formed materials, e.g. paper, board or cotton fabric, and to preparations including the micronized cellulose and the fluorescent whitening agents. The combination enables improved fluorescent whitening and optical brightening of the cellulosic materials.
    Type: Application
    Filed: April 28, 2014
    Publication date: March 3, 2016
    Applicant: Blankophor Gmbh & Co., KG
    Inventors: Bernd HAUSCHEL, Bernhard Hunke, Michael Kraemer, Gunter Klug
  • Fluorescent whitening agent compositions
    Patent number: 8920605
    Abstract: The invention relates to a composition suitable for optically whitening paper or board, wherein the composition contains specified bis-triazinylamino-stilbene fluorescent whitening agents with carboxylic acid and/or sulfonic acid groups. The composition can be used for whitening paper in the pulp, size press or by coating.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: December 30, 2014
    Assignee: Blankophor GmbH & Co. KG
    Inventors: Bernhard Hunke, Andrei Tauber, Michael Kraemer, Günter Klug
  • FLUORESCENT WHITENING AGENT COMPOSITIONS
    Publication number: 20140034258
    Abstract: The invention relates to a composition suitable for optically whitening paper or board, wherein the composition contains specified bis-triazinylamino-stilbene fluorescent whitening agents with carboxylic acid and/or sulfonic acid groups. The composition can be used for whitening paper in the pulp, size press or by coating.
    Type: Application
    Filed: March 22, 2012
    Publication date: February 6, 2014
    Applicant: BLANKOPHOR GMBH & CO.KG
    Inventors: Bernhard Hunke, Andrei Tauber, Michael Kraemer, Günter Klug
  • Fluorescent whitening agent compositions
    Patent number: 8608907
    Abstract: A composition suitable for paper brightening, wherein the composition contains one or more specified fluorescent whitening agents with taurine groups. The composition is used for whitening paper, in particular at the wet-end, in the size press or by coating.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: December 17, 2013
    Assignee: Blankophor GmbH & Co. KG
    Inventors: Bernhard Hunke, Michael Kraemer, Andrei Tauber, Günter Klug
  • COMPOSITION AND PROCESS FOR WHITENING PAPER
    Publication number: 20130126117
    Abstract: The invention relates to a composition suitable for surface treatment of paper, wherein the composition contains a specified fluorescent whitening agent with a combination of specific terminal groups, a salt of a bivalent cation, and a carrier. The composition is used for whitening paper, in particular in the size press.
    Type: Application
    Filed: July 14, 2011
    Publication date: May 23, 2013
    Applicant: BLANKOPHOR GMBH & CO. KG
    Inventors: Bernhard Hunke, Andrei Tauber, Michael Kraemer, Gunter Klug
  • Composition and process for whitening paper
    Patent number: 8354041
    Abstract: A composition suitable for surface treatment of paper, wherein the composition contains a specified fluorescent whitening agent with alkylsulfonic acid groups, a salt of a bivalent cation, and a carrier. The composition is used for whitening paper, in particular in the size press.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: January 15, 2013
    Assignee: Blankophor GmbH & Co. KG
    Inventors: Bernhard Hunke, Michael Kraemer, Andrei Tauber, Günter Klug
  • COMPOSITION AND PROCESS FOR WHITENING PAPER
    Publication number: 20110126996
    Abstract: The invention relates to a composition suitable for surface treatment of paper, wherein the composition contains a specified fluorescent whitening agent with alkylsulfonic acid groups, a salt of a bivalent cation, and a carrier. The composition is used for whitening paper, in particular in the size press.
    Type: Application
    Filed: June 10, 2009
    Publication date: June 2, 2011
    Applicant: BLANKOPHOR GMBH & CO. KG
    Inventors: Bernhard Hunke, Michael Kraemer, Andrei Tauber, Gunter Klug
  • FLUORESCENT WHITENING AGENT COMPOSITIONS
    Publication number: 20110094694
    Abstract: The invention relates to a composition suitable for paper brightening, wherein the composition contains one or more specified fluorescent whitening agents with taurine groups. The composition is used for whitening paper, in particular at the wet-end, in the size press or by coating.
    Type: Application
    Filed: June 10, 2009
    Publication date: April 28, 2011
    Applicant: BLANKOPHOR GMBH & CO. KG
    Inventors: Bernhard Hunke, Michael Kraemer, Andrei Tauber, Gunter Klug
  • Microcapsules having polyurea walls
    Patent number: 6797670
    Abstract: The invention relates to microcapsules for which the walls comprise reaction products of polyisocyanates, guanidine compounds, and optionally amines, wherein the polyisocyanates have an isocyanurate content of at least 30% by weight, based on polyisocyanate, and the walls comprise on average less than 9% by weight, based on the total weight of the microcapsule.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: September 28, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Kleban, Günter Klug, Jürgen Weisser
  • Microcapsules having polyurea walls
    Patent number: 6586107
    Abstract: The invention relates to microcapsules for which the walls comprise reaction products of polyisocyanates with guanidine compounds and amines.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: July 1, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Günter Klug, Jürgen Weisser
  • Microcapsules having polyurea walls
    Publication number: 20020079599
    Abstract: The invention relates to microcapsules for which the walls comprise reaction products of polyisocyanates, guanidine compounds, and optionally amines, wherein the polyisocyanates have an isocyanurate content of at least 30% by weight, based on polyisocyanate, and the walls comprise on average less than 9% by weight, based on the total weight of the microcapsule.
    Type: Application
    Filed: October 11, 2001
    Publication date: June 27, 2002
    Inventors: Martin Kleban, Gunter Klug, Jurgen Weisser
  • Microcapsules having polyurea walls
    Publication number: 20020064656
    Abstract: The invention relates to microcapsules for which the walls comprise reaction products of polyisocyanates with guanidine compounds and amines.
    Type: Application
    Filed: October 11, 2001
    Publication date: May 30, 2002
    Inventors: Gunter Klug, Jurgen Weisser
  • Pressure-sensitive recording material which comprises natural oils and/or derivatives thereof
    Patent number: 5552365
    Abstract: Particularly advantageous and environmentally compatible recording material comprises, in microencapsulated form, at least one 3,1-benzoxazine color donor dissolved in a solvent, and is characterized in that the solvent consists of one or more natural oils and/or one or more esters of fatty acids on which natural oils are based, or comprises such oils and/or esters.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: September 3, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Horst Berneth, Gunter Klug, Jurgen Weisser
  • Thermoreactive recording material of particular stability
    Patent number: 5439869
    Abstract: New thermoreactive recording materials contain a mixture containing at least one specifically modified bisphenol carboxylic acid and at least one basic compound. They are distinguished by good stabilization of the color even upon extended storage, good light stabilities and excellent stabilities to water, plasticizers, greases and ingredients of text-marking pens.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: August 8, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter Klug, Pieter Ooms, Christian Rasp
  • Modified polyester resins, a process for their preparation and toners containing such polyester resins
    Patent number: 5368968
    Abstract: Modified polyester resins contain polyester blocks which have been obtained from dicarboxylic acids and dialcohols, groupings of the formulae ##STR1## where X=Z=a hydrocarbon radical having 1 to 20 C atoms and Y=a hydrocarbon radical having 2 to 25 C atoms, and if appropriate groupings originating from crosslinking agents. They can be used as base polymers for toners.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: November 29, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rolf Wehrmann, Matthias Kocher, Harald Pielartzik, Gunter Klug
  • Thermoreactive recording material having particular stability
    Patent number: 5292712
    Abstract: New thermoreactive recording materials contain at least one salt of a specially modified bisphenolcarboxylic acid and are distinguished by good stabilisation of the ink, even upon extended storage time, good light stabilities and excellent stabilities to water, plasticisers, fats and substances contained in text-marking pens.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: March 8, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter Klug, Heinrich Schrage, Pieter Ooms, Hans-Josef Buysch
  • Microcapsules
    Patent number: 5236782
    Abstract: Microcapsules which can be prepared at low temperatures contain walls composed of the product of an interface polyaddition and/or interface polycondensation reaction between a hydroxylamine and at least one component which is reactive with amino and alcohol groups. These microcapsules are advantageously used in the production of carbonless copying paper and thermal paper.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: August 17, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter Klug, Norbert Weimann, Josef Vogel
  • Thermoreactive recording material
    Patent number: 5134113
    Abstract: Thermoreactive recording material contains, as developer, a mixture of an acidic-modified polymer of (meth)acrylonitrile and/or methacrylonitrile and a diphenol of the formula ##STR1## in which Y is, for example, a single bond, an alkylene or alkylidene radical, gives, on thermal printing, a dye which has a reduced tendency to sublime.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: July 28, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gunter Klug, Hubertus Psaar, Siegfried Korte
  • Tetraindolyl-heptamethine derivatives
    Patent number: 5118814
    Abstract: Tetraindolyl-heptamethine derivatives of the isomeric formulae ##STR1## in which A, B, D and E denote ##STR2## and may be identical to or different from one another, and the other symbols have the meaning indicated in the description, are used in pressure-sensitive and heat-sensitive recording materials.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: June 2, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Horst Berneth, Hubertus Psaar, Gunter Klug
  • Mixture of 3,1-benzoxazines and fluoranes
    Patent number: 5092925
    Abstract: The invention relates to mixtures of a) at least one 3,1-benzoxazine of the formula ##STR1## and b) at least one fluorane of the formula ##STR2## wherein the radicals of the abovementioned formulae have the meaning given in the description, and their use as color-forming agents for pressure- and heat-sensitive recording materials and to such recording materials.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: March 3, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Horst Berneth, Gunter Klug, Gert Jabs