Patents by Inventor Peter Nikolaus

Peter Nikolaus 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).

  • Process for the production of low-viscosity amphoteric surfactants
    Patent number: 4833253
    Abstract: Low viscosity amphoteric surfactants are prepared by quaternization of low diamine content imidazolines by a process in which certain addition and temperature parameters are strictly observed. Imidazolines suitable as a starting material may be obtained by heating fatty acids and aminoethanolamine in an inert solvent until water is eliminated, removing the water formed from the reaction mixture by azeotropic distillation and, finally, distilling off the solvent and the residual amine.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: May 23, 1989
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Uwe Ploog, Guenter Uphues, Peter Nikolaus
  • Hydroxyalkyl polyethylene glycol ether foam inhibitors
    Patent number: 4600523
    Abstract: An additive for cleaning preparations comprising a foam-inhibitive effective amount of a compound of the formulaR.sup.1 --CHOH--CHR.sup.2 --O--(CH.sub.2 CH.sub.2 O).sub.n --R.sup.3wherein:R.sup.1 is a straight-chain C.sub.6-16 -alkyl;R.sup.2 is H or a C.sub.1-8 -alkyl;R.sup.3 is a straight-chain or branched C.sub.4-8 -alkyl; andn is a number average of about 7 to 12;with the proviso that the total number of carbon atoms in R.sup.1 and R.sup.2 is between 6 and 16; and a method of inhibiting foam.
    Type: Grant
    Filed: December 13, 1984
    Date of Patent: July 15, 1986
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Robert Piorr, Hans-Joachim Schluessler, Peter Nikolaus
  • Process for manufacture of quaternary ammonium compounds
    Patent number: 4492802
    Abstract: Process for the manufacture of quaternary ammonium compounds by reacting a compound having a terminal epoxide troup with a salt of a tertiary amine in the presence of a quaternary ammonium compound as catalyst.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: January 8, 1985
    Assignees: Henkel Kommanditgesellschaft auf Aktien, Degussa Aktiengesellschaft
    Inventors: Horst Rutzen, Peter Nikolaus, Martin Bischoff, Rudolf Lehmann