Patents by Inventor Reiner Kirrstetter

Reiner Kirrstetter 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 penem compounds
    Patent number: 5198544
    Abstract: Compound I ##STR1## is obtained by reaction of compound II with compound III
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: March 30, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Karl-Heinz Budt, Walter Durokheimer, Gerd Fischer, Rolf Horlein, Reiner Kirrstetter, Rudolf Lattrell
  • Crystallized cephem-acid addition salts, and a process for the preparation thereof
    Patent number: 4845087
    Abstract: Crystallized cephem-acid addition salts of the general formula ##STR1## pharmaceutical preparations which contain such cephem derivatives and are active against bacterial infections, a process 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: February 23, 1988
    Date of Patent: July 4, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rudolf Lattrell, Walter Durckheimer, Reiner Kirrstetter
  • Process for the manufacture of 3-pyridinium-methyl-cephalosporins
    Patent number: 4692516
    Abstract: Process for the preparation of cephem compounds of the formula ##STR1## wherein R is optionally substituted aminothiazolyl or amino-1,2,4-thiadiazolyl, A is optionally substituted pyridinium, R.sup.1 is hydrogen or methoxy and R.sup.2 are special aliphatic substituents, by a nucleophilic replacement in the substituent in 3-position in the presence of tri-C.sub.1 C.sub.4 -alkyl iodosilane.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: September 8, 1987
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Reiner Kirrstetter, Walter Durckheimer, Rudolf Lattrell, Wilfried Schwab
  • Process for the preparation of cephem compounds
    Patent number: 4667028
    Abstract: Process for the preparation of cephem compounds of the formula ##STR1##
    Type: Grant
    Filed: May 4, 1984
    Date of Patent: May 19, 1987
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Wilfried Schwab, Walter Durckheimer, Reiner Kirrstetter, Rudolf Lattrell
  • Cephalosporin derivatives
    Patent number: 4647556
    Abstract: The invention relates to cephem derivatives of the general formula I ##STR1## and their physiologically acceptable acid addition salts, to pharmaceutical formulations active against bacterial infections, to processes for preparing the compounds and formulations, and to the use of the compounds for combating bacterial infections.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: March 3, 1987
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rudolf Lattrell, Reiner Kirrstetter, Wilfried Schwab, Walter Durckheimer, Gerhard Seibert