Patents by Inventor Folker Wittmann

Folker Wittmann 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 integrally waterproofed concrete
    Patent number: 6139622
    Abstract: This invention relates to a process for the production of a homogeneously waterproofed concrete (integrally waterproofed concrete) in which an aqueous hydrolysable, emulsion containing organosilicon compounds is added before curing to the fresh concrete mix prepared from water, inorganic and optionally organic constituents, which emulsion contains at least one alkoxysilane and optionally an organosilicon compound acting as a surfactant.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: October 31, 2000
    Assignee: Degussa-Huls AG
    Inventors: Thomas Gobel, Wolfgang Lortz, Reiner Storger, Folker Wittmann, Andreas Gerdes