Patents by Inventor Heike Maier

Heike Maier 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 preparation of alkanolamines having improved color quality
    Patent number: 6291715
    Abstract: Preparation of alkanolamines having improved color quality by treating the alkanolamine with hydrogen in the presence of a hydrogenation catalyst at elevated temperature, by using, as hydrogenation catalyst, a heterogeneous catalyst comprising Re, Ru, Rh, Pd, Os, Ir, Pt and/or Ag and a support material chosen from the group consisting of activated carbon, alpha-aluminum oxide, zirconium dioxide and titanium dioxide, where the catalyst, in the case of activated carbon as support material, has a cutting hardness of at least 10 N, a side crushing strength of at least 30 N or a compressive strength of at least 25 N.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: September 18, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Günther Ruider, Karl-Heinz Ross, Boris Breitscheidel, Heike Maier, Gerhard Schulz, Sylvia Huber