Patents by Inventor Gerhard Hool

Gerhard Hool 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).

  • Compositions for the control of microorganisms
    Patent number: 4057648
    Abstract: Microorganisms are controlled using combinations of halogenated o-phenoxyphenols and phenoxy or phenalkyl alcohols.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: November 8, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Gerhard Hool, Hans Kundig
  • Process for bonding and providing nonwovens with an antimicrobial finish
    Patent number: 3991237
    Abstract: A process for bonding and providing nonwovens with an antimicrobial finish is provided, which comprises treating the nonwovens with aqueous preparations of1. reaction products of (a) an epoxide that contains at least two epoxide groups in each molecule, (b) a fatty amine with 12 to 24 carbon atoms, (c) a dicarboxylic acid of the formulaHOOC(CH.sub.2).sub.y.sub.-1 COOH,wherein y is an integer from 1 to 13, optionally (d) an anhydride of an aromatic dicarboxylic acid with at least 8 carbon atoms, of an aliphatic monocarboxylic acid with at least 2 carbon atoms, or of an aliphatic dicarboxylic acid with at least 4 carbon atoms, (e) an aliphatic diol with 2 to 21 carbon atoms and/or (f) a difunctional compound which differs from components (a), (c), (d) and (e), which reaction products have been reacted or mixed or reacted and mixed with2. aminoplast precondensates which contain alkyl ether groups, and subsequently drying the treated nonwovens at elevated temperature.
    Type: Grant
    Filed: December 5, 1974
    Date of Patent: November 9, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Rosemarie Topfl, Christina Gothberg, Gerhard Hool
  • Process for dressing and providing leather with an antimicrobial finish
    Patent number: 3991238
    Abstract: A process for dressing and providing leather with an antimicrobial finish is provided, which comprises treating the leather with aqueous preparations of (1) reaction products of (a) an epoxide that contains at least two epoxide groups in each molecule, (b) a fatty amine with 12 to 24 carbon atoms, (c) a dicarboxylic acid of the formulaHOOC(CH.sub.2).sub.y-1 COOH ,wherein y is an integer from 1 to 13, optionally (d) an anhydride of an aromatic dicarboxylic acid with at least 8 carbon atoms, of an aliphatic monocarboxylic acid with at least 2 carbon atoms, or of an aliphatic dicarboxylic acid with at least 4 carbon atoms, (e) an aliphatic diol with 2 to 21 carbon atoms and/or (f) a difunctional compound which differs from components (a), (c), (d) and (e), which reaction products have been reacted or mixed or reacted and mixed with (2) aminoplast precondensates which contain alkyl ether groups, and subsequently drying the treated leather at elevated temperature.
    Type: Grant
    Filed: December 5, 1974
    Date of Patent: November 9, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Rosemarie Topfl, Max Schwank, Gerhard Hool
  • Synergistic composition for the control of bacteria
    Patent number: 3982022
    Abstract: Microorganisms are controlled using combinations of halogenated o-phenoxyphenols and phenoxy or phenalkyl alcohols.
    Type: Grant
    Filed: May 15, 1974
    Date of Patent: September 21, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Gerhard Hool, Hans Kundig