Patents by Inventor Andreas Lindert

Andreas Lindert 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).

  • Publication number: 20110056516
    Abstract: An environmentally acceptable and comparatively safe acid cleaning solution containing sulfuric acid, water and amine containing inhibitors that adequately remove oxidation or contaminants from surfaces without excessively damaging equipment. The sulfuric acid is effective in removing impurities and contaminants, while the amine moieties or amine salts reduce the otherwise damaging effect of sulfuric acid on equipment and on human skin and tissue.
    Type: Application
    Filed: November 17, 2010
    Publication date: March 10, 2011
    Inventors: Richard E. ADAIR, Andreas Lindert
  • Publication number: 20090148335
    Abstract: A process for treating metal to remove oxidation or contaminants or prepare the metal for processing without unduly damaging the metal. A formulation of sulfuric acid, water, and either ammonia or a sulfate salt of ammonia (or both) is used to treat the metal. The sulfuric acid is effective in removing impurities and contaminants, while the ammonia or ammonia salt reduces the otherwise damaging effect sulfuric acid has on metal.
    Type: Application
    Filed: December 15, 2008
    Publication date: June 11, 2009
    Inventors: Richard E. Adair, Andreas Lindert
  • Patent number: 6361622
    Abstract: A composition and method for coating and touching up a metal surface is provided. The composition contains from about 0.5 to about 240 millimoles per kilograms of a fluorometallate ion, from about 0.5 grams/liters to about 10 grams/liter of phosphorous-containing inorganic oxy anions calculated at their stoichiometric equivalent as H3PO4; from about 0.05 g/l to about 3.5 g/l of hexavalent chromium and from about 0.10 g/l to about 2.20 g/l of trivalent chromium ions.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: March 26, 2002
    Assignee: Henkel Corporation
    Inventors: David R. McCormick, Andreas Lindert
  • Patent number: 6172123
    Abstract: A method for preventing or breaking oil and water mixtures comprising adding thereto a branched reaction product of A) at least one linking compound of formula I R1(X)3  (I) wherein each X group is a halogen atom or one X group is a halogen atom and two X groups with two adjacent carbon atoms in the R1 group and an oxygen atom from an epoxy group, and R1 is an alkanetriyl group containing from 3 to 10 carbon atoms; B) at least one compound of formula II and/or formula III R2(OA)nOH  (II) wherein R2 is an aliphatic group containing from 3 to 36 carbon atoms, n is a number of from 0 to 200, and each OA group is independently an ethyleneoxy, 1,2-propyleneoxy, or 1,2-butyleneoxy group.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: January 9, 2001
    Assignee: Henkel Corporation
    Inventors: Andreas Lindert, Michael S. Wiggins
  • Patent number: 5891952
    Abstract: Processes for the preparation of polyphenol polymers useful as surface coatings wherein the process is carried out in the absence of organic solvents, and the polyphenol polymers are the reaction products of a phenolic polymer or copolymer, an amine, and an aldehyde, ketone, or mixture thereof; and the aqueous solutions resulting therefrom.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: April 6, 1999
    Assignee: Henkel Corporation
    Inventors: David R. McCormick, Andreas Lindert, John R. Pierce
  • Patent number: 5298289
    Abstract: A composition for treatment and after treatment of surfaces, especially metals, with derivatives of polyphenol compounds is provided. The derivatives include substituted aminomethyl groups on at least some of the phenyl rings in the polyphenol polymers, with molecular weights within the range of about 700 to about 70,000 being preferred. The compositions are particularly useful for treating chromated aluminum surfaces prior to painting, to improve corrosion resistance, and when combined with surfactants, for treating plastic and painted surfaces to improve rinsability without water breaks.
    Type: Grant
    Filed: July 8, 1993
    Date of Patent: March 29, 1994
    Assignee: Henkel Corporation
    Inventors: Andreas Lindert, Gerald J. Cormier, John R. Pierce
  • Patent number: 5266410
    Abstract: A metal treatment solution comprising an effective amount of a soluble or dispersible compound which is a derivative of a polyphenol. A composition for treatment and after treatment of metal with polyphenol compounds is provided. The present invention includes novel derivatives of polyphenol compounds which are useful in surface treatment solutions of dispersions. A method for using these solutions or dispersions is also provided. The molecular weight of the polyphenols used to form the derivatives of the present invention are in the range of from about 360 to 30,000 or greater. The resulting derivatives of the present invention typically have a molecular weight of up to about 2,000,000 with molecular weights within the range of about 700 to about 70,000 being preferred.
    Type: Grant
    Filed: March 18, 1992
    Date of Patent: November 30, 1993
    Assignee: Henkel Corporation
    Inventors: Andreas Lindert, John R. Pierce, David R. McCormick, William D. Zimmermann
  • Patent number: 5116912
    Abstract: A metal treatment solution comprising an effective amount of a soluble or dispersible compound which is a derivative of a polyphenol. A composition for treatment and after treatment of metal with polyphenol compounds is provided. The present invention includes novel derivatives of polyphenol compounds which are useful in surface treatment solutions or dispersions. A method for using these solutions or dispersions is also provided. The molecular weight of the polyphenols used to form the derivatives of the present invention are in the range of from about 360 to 30,000 or greater. The resulting derivatives of the present invention typically have molecular weight of up to about 2,000,000 with molecular weights within the range of about 700 to about 70,000 being preferred.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: May 26, 1992
    Assignee: Henkel Corporation
    Inventors: Andreas Lindert, John R. Pierce, David R. McCormic, William D. Zimmermann
  • Patent number: 5068299
    Abstract: A metal treatment solution comprising an effective amount of a soluble or dispersible compound which is a derivative of a polyphenol. Novel derivatives of polyphenol compounds useful in the treatment of the surface of metal articles is provided. Novel surface treatment solutions or dispersions, and methods for using these solutions is provided. Carbohydrate-modified polyphenol compounds are utilized in the present invention. The molecular weight of the polyphenols used in the preperation of derivatives of the present invention are in the range of about 360 to about 30,000 or greater. The resulting derivatives will typically have a molecular weight of up to about 2,000,000 with molecular weight within the range of about 700 to about 70,000 being preferred.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: November 26, 1991
    Assignee: Henkel Corporation
    Inventors: Andreas Lindert, John R. Pierce, David R. McCormick, William D. Zimmermann
  • Patent number: 5063089
    Abstract: A metal treatment solution comprising an effective amount of a soluble or dispersible compound which is a derivative of a polyphenol. The present invention comprises novel derivatives of polyphenol compounds useful in the treatment of the surface of metal articles. The present invention also encompasses novel surface treatment solutions or dispersions, and methos of using these solutions or dispersions. The compositions of the present invention include amine oxide containing polyphenol compounds and derivatives thereof. The molecular weight of the polyphenols used in derivatives of the present invention have molecular weights of from about 360 to about 30,000 or greater. The resulting derivatives of the present invention typically have a molecular weight of up to about 2,000,000 with molecular weights within the range of about 700 to about 70,000 being preferred.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: November 5, 1991
    Assignee: Henkel Corporation
    Inventors: Andreas Lindert, John R. Pierce, David R. McCormick
  • Patent number: 5039770
    Abstract: A metal treatment solution comprising an effective amount of a soluble or dispersible compound which is a derivative of a polyphenol. A composition for treatment and after treatment of metal with polyphenol compounds is provided. The present invention includes novel derivatives of polyphenol compounds which are useful in surface treatment solutions or dispersions. A method for using these solutions or dispersions is also provided. The molecular weight of the polyphenols used to form the derivatives of the present invention are in the range of from about 360 to 30,000 or greater. The resulting derivatives of the present invention typically have a molecular weight of up to about 2,000,000 with molecular weights within the range of about 700 to about 70,000 being preferred.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: August 13, 1991
    Assignee: Henkel Corporation
    Inventors: Andreas Lindert, John R. Pierce, David R. McCormick, William D. Zimmermann
  • Patent number: 4970264
    Abstract: A metal treatment solution comprising an effective amount of a soluble or dispersible compound which is a derivative of a polyphenol. The present invention comprises novel derivatives of polyphenol compounds useful in the treatment of the surface of metal articles. The present invention also encompasses novel surface treatment solutions or dispersions, and methods of using these solutions or dispersions. The compositions of the present invention include amine oxide containing polyphenol compounds and derivative thereof. The molecular weight of the polyphenols used in derivatives of the present invention have molecular weights of from about 360 to about 30,000 or greater. The resulting derivatives of the present invention typically have a molecular weight of up to about 2,000,000 with molecular weights within the range of about 700 to about 70,000 being preferred.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: November 13, 1990
    Assignee: Henkel Corporation
    Inventors: Andreas Lindert, John R. Pierce, David R. McCormick
  • Patent number: 4963596
    Abstract: A metal treatment solution comprising an effective amount of a soluble or dispersible compound which is a derivative of a polyphenol. Novel derivatives of polyphenol compounds useful in the treatment of the surface of metal articles is provided. Novel surface treatment solutions or dispersions, and methods for using these solutions is provided. Carbohydrate-modified polyphenol compounds are utilized in the present invention. The molecular weight of the polyphenols used in the preparation of derivatives of the present invention are in the range of about 360 to about 30,000 or greater. The resulting derivatives will typically have a molecular weight of up to about 2,000,000 with molecular weights within the range of about 700 to about 70,000 being preferred.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: October 16, 1990
    Assignee: Henkel Corporation
    Inventors: Andreas Lindert, John R. Pierce, David R. McCormick, William D. Zimmermann
  • Patent number: 4944812
    Abstract: A vegetable tannin is condensed with formaldehyde and an amine to provide an acid soluble product which is useful in a metal treatment solution to enhance corrosion resistance and paint adhesion characteristics of a metal surface.
    Type: Grant
    Filed: November 16, 1988
    Date of Patent: July 31, 1990
    Assignee: Henkel Corporation
    Inventors: Andreas Lindert, Stephen M. Wolpert
  • Patent number: 4532309
    Abstract: A stable water soluble epoxy resin suitable for use as a coating material is made by grafting an acid functional vinyl monomer onto unsaturated functional sites on an epoxy resin backbone.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: July 30, 1985
    Assignee: Parker Chemical Company
    Inventor: Andreas Lindert
  • Patent number: 4517028
    Abstract: A metal surface is treated by contacting the surface with a solution comprising an effective amount of a soluble or dispersible treatment compound selected from the group consisting of a polymer having the following general formula, acid salts thereof, and mixtures thereof: ##STR1## where: R.sub.1 through R.sub.3 are hydrogen or an alkyl group having from 1 to about 5 carbon atoms;each Y is hydrogen, Z, CR.sub.4 R.sub.5 OR.sub.6, CH.sub.2 Cl, or an alkyl or aryl group having from 1 to 18 carbon atoms;Z is ##STR2## R.sub.4 through R.sub.10 are hydrogen, or an alkyl, aryl, hydroxy-alkyl, amino-alkyl, mercapto-alkyl or phospho-alkyl moiety, said R.sub.4 through R.sub.10 being of carbon chain lengths up to a length at which the compound is not soluble or dispersible; andn is from 2 up to a number at which the polymer is not soluble or dispersible.Preferably, the solution is an aqueous solution and "Z" moieties are present in sufficient amount that the compound is water soluble or water dispersible.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: May 14, 1985
    Assignee: Parker Chemical Company
    Inventor: Andreas Lindert
  • Patent number: 4465816
    Abstract: A stable, water soluble epoxy resin suitable for use as a coating material is made by grafting a thio-acid onto an unsaturated functional site on an epoxy resin backbone.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: August 14, 1984
    Assignee: Parker Chemical Company
    Inventor: Andreas Lindert
  • Patent number: 4457790
    Abstract: A treatment solution for contacting a metal surface comprises:from about 0.001% to about 1.0% of a metal ion selected from the group consisting of titanium, zirconium and hafnium and mixtures thereof; andan effective amount of a soluble or dispersible treatment compound selected from the group consisting of a polymer having the following general formula, acid salts thereof, and mixtures thereof: ##STR1## where: R.sub.1 through R.sub.3 are hydrogen or an alkyl group having from 1 to about 5 carbon atoms;each Y is hydrogen, Z, CR.sub.4 R.sub.5 OR.sub.6, CH.sub.2 Cl, or an alkyl or aryl group having from 1 to 18 carbon atoms;Z is ##STR2## R.sub.4 through R.sub.10 are hydrogen, or an alkyl, aryl, hydroxy-alkyl, amino-alkyl, mercapto-alkyl or phospho-alkyl moiety, said R.sub.4 through R.sub.10 being of carbon chain lengths up to a length at which the compound is not soluble or dispersible; andn is from 2 up to a number at which the polymer is not soluble or dispersible.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: July 3, 1984
    Assignee: Parker Chemical Company
    Inventors: Andreas Lindert, Jack A. Kramer
  • Patent number: 4433015
    Abstract: An aqueous solution comprising an effective amount of a water soluble or water dispersible compound selected from the group consisting of a polymer having the following general formula, acid salts thereof and mixtures thereof: ##STR1## where: n=from 2 up to a number at which the polymer is not water soluble or water dispersible;X=H or Z; ##STR2## Y=H, Z, Cr.sub.5 R.sub.6 OR.sub.7, or CH.sub.2 Cl; R.sub.1 through R.sub.7 =H, or an alkyl, aryl, hydroxy-alkyl, amino-alkyl, mercaptoalkyl or phospho-alkyl moiety, said R.sub.1 through R.sub.7 being of carbon chain lengths up to a length at which the compound is not water soluble or dispersible;wherein at least one of X or Y=Z and the Z moieties are present in sufficient amount that the compound is water soluble or water dispersible.This solution is useful in the treatment of metal surfaces to impart corrosion resistance and paint adhesion characteristics thereto.
    Type: Grant
    Filed: April 7, 1982
    Date of Patent: February 21, 1984
    Assignee: Parker Chemical Company
    Inventor: Andreas Lindert
  • Patent number: RE40406
    Abstract: A composition and method for coating and touching up a metal surface is provided. The composition contains from about 0.5 to about 240 millimoles per kilogram of a fluorometallate ion, from about 0.5 grams/liters to about 10 grams/liter of phosphorous-containing inorganic oxy anions calculated at their stoichiometric equivalent as H3PO4; from about 0.05 g/l to about 3.5 g/l of hexavalent chromium and from about 0.10 g/l to about 2.20 g/l of trivalent chromium ions and a surfactant.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: July 1, 2008
    Assignee: Henkel KGaA
    Inventors: David R. McCormick, Andreas Lindert