Patents by Inventor Klaus Pressler

Klaus Pressler 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 new mutants of herpes simplex virus type 1 and type 2
    Patent number: 4322404
    Abstract: Herpes virus was doubly mutated in two steps by treatment with phosphono formic acid and 5-ethyl-2'-desoxyuredine. In this way the pathogenicity of the herpes virus was so weakened that they are usable as vaccines.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: March 30, 1982
    Inventors: Kailash K. Gauri, Klaus Pressler, Klaus-Dirk Schenk
  • Basically substituted ureas and processes for the treatment of virus diseases
    Patent number: 4239761
    Abstract: The present invention is related to new basically substituted ureas having the general Formula I ##STR1## and the pharmaceutically acceptable acid addition salts thereof which produce an improved antiviral activity against DNS- and RNS-viruses. The invention is further related to the treatment of humans or animals suffering from diseases caused by viruses by administering compositions containing such ureas or salts thereof as active agent.
    Type: Grant
    Filed: August 23, 1979
    Date of Patent: December 16, 1980
    Assignee: Asta-werke Aktiengesellschaft, Chemische Fabrik
    Inventors: Rolf Rebling, Gerhard Scheffler, Klaus Pressler, Klaus D. Schenk