Patents by Inventor Ursula Wichmann

Ursula Wichmann 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).

  • Cold-box binding agent systems and mixtures for use as additives for such binding agent systems
    Patent number: 9238264
    Abstract: A description is provided of a mixture which is preparable by allowing the reaction of a premixture of (av), methanesulfonic acid (bv), one or more esters of one or more phosphorous-oxygen acids and (cv) one or more silanes. The invention also concerns the use of said mixtures as additives for the polyisocyanate component of a two-component binding agent system for preparation of a polyurethane resin. The invention further concerns a solution containing polyisocyanate for use as a component of a molding material binding agent system, and the use of a solution containing polyisocyanate as the polyisocyanate component of a two-component binding agent system for preparation of a polyurethane resin and corresponding two-component binding agent systems for preparation of a polyurethane resin.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: January 19, 2016
    Assignee: HUTTENES-ALBERTUS CHEMISCHE WERKE GMBH
    Inventors: Gérard Ladégourdie, Markus Dörschel, Ursula Wichmann, Amine Serghini Anbari, David Strunk
  • SULFONIC ACID-CONTAINING BINDING AGENT FOR MOULDING MIXES FOR THE PREPARATION OF MOULDS AND CORES
    Publication number: 20130292083
    Abstract: A polyisocyanate component for a moulding material binding agent system is described containing at feast one sulfonic acid in a solution of at least one polyisocyanate, containing at least two NCO-groups in the molecule.
    Type: Application
    Filed: November 21, 2011
    Publication date: November 7, 2013
    Applicant: Huttenes-Albertus Chemische Werke GMBH
    Inventors: Gérard P.M. Ladégourdie, Markus Dörschel, Amine Serghini Anbari, Ursula Wichmann