Patents by Inventor Michael Del Grosso

Michael Del Grosso 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 transition metal complexes with nitrogen-containing polydentate ligands as a bleaching catalyst and bleaching agent composition
    Publication number: 20040127382
    Abstract: The present invention is directed to transition metal complexes that are used as bleaching catalysts for peroxy compounds.
    Type: Application
    Filed: June 12, 2003
    Publication date: July 1, 2004
    Inventors: Ulrike Kunz, Harald Jakob, Michael del Grosso, Astrid Dorfer
  • Use of transition metal complexes with nitrogen-containing polydentate ligands as a bleaching catalyst and bleaching agent composition
    Publication number: 20040053802
    Abstract: The present invention is directed to transition metal complexes that can be used as bleaching catalysts for peroxy compounds.
    Type: Application
    Filed: June 19, 2003
    Publication date: March 18, 2004
    Applicant: Degussa AG
    Inventors: Ulrike Kunz, Harald Jakob, Michael del Grosso, Astrid Dorfer
  • Method for preserving wood and preserved wood obtained in accordance with the method
    Patent number: 6652986
    Abstract: A method for preserving wood that includes impregnating the wood with a wood preservative agent based on one or more compounds of at least one metal of the 1st and/or 2nd subgroups of the periodic system and fixing the metal(s) for purposes of reducing the danger of leaching. The wood is (i) impregnated with a preservative containing a water-soluble zinc compound or (ii) wood that has already been impregnated with a zinc-free preservative or one that contains at least one metal compound of the 1st and/or 2nd subgroups is impregnated with a second preservative that contains at least one water-soluble zinc compound, and wood impregnated in accordance with (i) or (ii) is impregnated with an aqueous solution of a salt of trimercapto-s-triazine (TMT), dithiocarbamate or trithiocarbonate.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: November 25, 2003
    Assignee: Degussa AG
    Inventors: Rüdiger Peldszus, Egon Walzer, Martin Bauer, Norbert Steiner, Michael Del Grosso
  • Method for preserving wood and preserved wood obtained in accordance with the method
    Publication number: 20010044034
    Abstract: A method for preserving wood that includes impregnating the wood with a wood preservative agent based on one or more compounds of at least one metal of the 1st and/or 2nd subgroups of the periodic system and fixing the metal(s) for purposes of reducing the danger of leaching. The wood is (i) impregnated with a preservative containing a water-soluble zinc compound or (ii) wood that has already been impregnated with a zinc-free preservative or one that contains at least one metal compound of the 1st and/or 2nd subgroups is impregnated with a second preservative that contains at least one water-soluble zinc compound, and wood impregnated in accordance with (i) or (ii) is impregnated with an aqueous solution of a salt of trimercapto-s-triazine (TMT), dithiocarbamate or trithiocarbonate.
    Type: Application
    Filed: March 1, 2001
    Publication date: November 22, 2001
    Inventors: Rudiger Peldszus, Egon Walzer, Martin Bauer, Norbert Steiner, Michael Del Grosso
  • Activators for inorganic peroxo compounds and agents containing them
    Patent number: 5654269
    Abstract: A and N-acyl compounds are used for the activation of inorganic peroxo compounds in washing, bleaching and cleaning agents and disinfectants. Compounds of formula (I) ##STR1## wherein R.sup.1 represents a C.sub.6 to C.sub.l0 alkyl group; and R.sup.2 represents hydrogen or selected substituents, are highly effective activators for aqueous bleaching, washing, cleaning and disinfecting liquors. A particularly preferred activator is N-n-nonanoylsuccinimide.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 5, 1997
    Assignee: Degussa Aktiengesellschaft
    Inventors: Manfred Dankowski, Michael Del Grosso, Astrid Dorfer