Patents by Inventor Lothar Röhrig

Lothar Röhrig 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 mixing a polyol component and an isocyanate component
    Patent number: 7230037
    Abstract: The present invention relates to a method for the continuous mixing of at least one polyol component and at least one isocyanate component and optionally additives to form a polyurethane reaction mixture in a stirrer mixer with an axially conveying stirrer.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: June 12, 2007
    Assignee: Hennecke GmbH
    Inventors: Hans-Michael Sulzbach, Reiner Raffel, Jürgen Wirth, Wolfgang Pawlik, Florian Thiebes, Lothar Röhrig
  • Process and apparatus for the continuous production of slabstock foam
    Patent number: 7101163
    Abstract: Slabstock foam free of cavities can be produced without any restriction, i.e. also from rapidly reacting chemical systems, by introducing the liquid reaction mixture from underneath, in front of, and/or through an optionally swivellable floor plate, wherein the floor plate and the inlet for introducing the liquid reaction mixture is arranged in a manner such that the reaction mixture above the floor plate is substantially still liquid.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: September 5, 2006
    Assignee: Hennecke GmbH
    Inventors: Hans-Michael Sulzbach, Lothar Röhrig, Reiner Raffel
  • Process for the continuous production of slabstock foam
    Patent number: 6833095
    Abstract: Slabstock foam free of cavities can be produced without any restriction, i.e. also from rapidly reacting chemical systems, by introducing the liquid reaction mixture from underneath, in front of, and/or through an optionally swivellable floor plate, wherein the floor plate and the inlet for introducing the liquid reaction mixture is arranged in a manner such that the reaction mixture above the floor plate is substantially still liquid.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: December 21, 2004
    Assignee: Hennecke GmbH
    Inventors: Hans-Michael Sulzbach, Lothar Röhrig, Reiner Raffel