Patents by Inventor Karl-Erich Kling

Karl-Erich Kling 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).

  • Manufacture of Bz-1-bromobenzanthrone
    Patent number: 4146547
    Abstract: A process for the manufacture of Bz-1-bromobenzanthrone by brominating finely divided benzanthrone in aqueous suspension, wherein the improvement comprises treating benzanthrone having a mean particle size of 30 .mu.m or less with bromine or brominating agent at above 80.degree. C.A product which contains from 91 to 94% by weight of Bz-1-bromobenzanthrone is obtained.
    Type: Grant
    Filed: June 30, 1977
    Date of Patent: March 27, 1979
    Assignee: BASF Aktiengesellschaft
    Inventors: Alfred Schuhmacher, Karl-Erich Kling