Patents by Inventor Harald Alff

Harald Alff 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).

  • Aqueous emulsions containing organosilicon compounds for the impregnation of inorganic materials
    Patent number: 5314533
    Abstract: Aqueous emulsions are disclosed containing organosilicon compounds for the impregnation of inorganic materials, in particular building materials, containing alkoxysilanes and silane surfactants. The emulsions comprise 1-80% by weight of one alkoxy silane, ##STR1## X.dbd.H,cl,Br, I, NH.sub.2, SCN, CN, N.sub.3, NHR, NR, NR.sub.3, --S.sub.x --, aryl or alkenyla.dbd.0 or 1b.dbd.
    Type: Grant
    Filed: June 23, 1992
    Date of Patent: May 24, 1994
    Assignee: Degussa Aktiengesellschaft
    Inventors: Thomas Goebel, Rudolf Michel, Harald Alff, Josef Karl