Patents by Inventor Peter Fritsch

Peter Fritsch 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).

  • METHOD FOR PRODUCING POLYESTEROLS HAVING A REDUCED REACTIVITY
    Publication number: 20090227759
    Abstract: Polyesterols having reduced reactivity are prepared by catalytic polycondensation of dicarboxylic acids/dicarboxylic acid derivatives and H-functional substances using tin catalysts by a process wherein the polyesterols are brought into contact with oxygen after the end of the esterification reaction. The polyesterols themselves obtained by this process are used for the preparation of PU.
    Type: Application
    Filed: May 1, 2009
    Publication date: September 10, 2009
    Applicant: BASF SE
    Inventors: Mirko Kreitschmann, Udo Rotermund, Peter Fritsch
  • Method for producing polyesterols having a reduced reactivity
    Publication number: 20060205914
    Abstract: Polyesterols having reduced reactivity are prepared by catalytic polycondensation of dicarboxylic acids/dicarboxylic acid derivatives and H-functional substances using tin catalysts by a process wherein the polyesterols are brought into contact with oxygen after the end of the esterification reaction. The polyesterols themselves obtained by this process are used for the preparation of PU.
    Type: Application
    Filed: February 24, 2004
    Publication date: September 14, 2006
    Applicant: BASF Aktiengesellshaft
    Inventors: Mirko Kreitschmann, Udo Rotermund, Peter Fritsch
  • Immobilization of ligands by radio-derivatized polymers
    Patent number: 5196478
    Abstract: This invention relates to radio-derivatized polymers and a method of producing them by contacting non-polymerizable conjugands with radiolysable polymers in the presence of irradiation. The resulting radio-derivatized polymers can be further linked with ligands of organic or inorganic nature to immobilize such ligands.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: March 23, 1993
    Assignee: Epipharm Allergie-Service Gesellschaft m.b.H.
    Inventors: Janos M. Varga, Peter Fritsch
  • Coating compounds for electrical and electronic components containing vitreons fused silica
    Patent number: 5158990
    Abstract: A drop coating compound in particular, for unhoused electrical and electronic circuits and components. The compound includes highly filled ultraviolet-curable epoxy resin compounds having improved properties with respect to their use and in comparison to previously used, predominantly two-component, thermally curable resins.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: October 27, 1992
    Assignee: Siemens Aktiengesellschaft
    Inventors: Heiner Bayer, Barbara Lehner, Hans-Peter Fritsch, Kurt Wohak