Patents by Inventor Friedhelm Adam

Friedhelm Adam 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).

  • Crystalline cephem acid addition salts and process for their preparation
    Patent number: 5409918
    Abstract: Crystalline cephem acid addition salts of the general formula II ##STR1## pharmaceutical preparations effective against bacterial infections which contain such cephem derivatives, processes for the preparation of the cephem derivatives and the pharmaceutical preparations, and the use of the cephem derivatives for combating bacterial infections.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: April 25, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Friedhelm Adam, Walter Durckheimer, Burkhard Mencke, Dieter Isert
  • Cephalosporin derivatives
    Patent number: 5306717
    Abstract: Cephalosporin derivatives of the general formula ##STR1## pharmaceutical preparations which are active against bacterial infections and contain such cephem derivatives, processes for the preparation of the cephem derivatives and the pharmaceutical preparations and the use of the cephem derivatives for combating bacterial infections.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: April 26, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Friedhelm Adam, Walter Durckheimer, Gerd Fischer, Burkhard Mencke, Gerhard Seibert, Dieter Isert, Norbert Klesel
  • Cephalosporin derivatives
    Patent number: 5100887
    Abstract: Cephemcarboxylic acid esters of the general formula ##STR1## pharmaceutical preparations which are active against bacterial infections, which contain such cephem derivatives, a process for the preparation of the cephem derivatives and the pharmaceutical preparations, and also the use of the cephem derivatives for combating bacterial infections.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: March 31, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Friedhelm Adam, Jurgen Blumbach, Walter Durckheimer, Gerd Fischer, Burghard Mencke, Dieter Isert, Gerhard Seibert
  • Cephalosporin derivatives
    Patent number: 5091382
    Abstract: Cephalosporin derivatives of the general formula ##STR1## pharmaceutical preparations active against bacterial infections which contain such cephalosporin derivatives, processes for the preparation of the cephalosporin derivatives, use of the cephalosporin derivatives for the preparation of a pharmaceutical for combating bacterial infections, and starting products for the preparation of cephalosporin derivatives.
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: February 25, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Friedhelm Adam, Walter Durckheimer, Karl-Heinz Scheunemann, Dieter Isert, Gerhard Seibert
  • Cephalosporin derivatives
    Patent number: RE34865
    Abstract: Cephemcarboxylic acid esters of the general formula ##STR1## pharmaceutical preparations which are active against bacterial infections, which contain such cephem derivatives, a process for the preparation of the cephem derivatives and the pharmaceutical preparations, and also the use of the cephem derivatives for combating bacterial infections.
    Type: Grant
    Filed: November 19, 1992
    Date of Patent: February 21, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Friedhelm Adam, Jurgen Blumbach, Walter Durckheimer, Gerd Fischer, Burghard Mencke, Dieter Isert, Gerhard Seibert