Patents by Inventor Erich Klieger

Erich Klieger 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).

  • Patent number: 7074387
    Abstract: Compounds of formula I wherein Z1, Z2, X, R2 and R3 are as defined herein, are suitable as NMR shift reagents.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: July 11, 2006
    Assignee: Schering AG
    Inventors: Heinz Gries, Erich Klieger, Bernd Raduechel, Heribert Schmitt-Willich, Hanns-Joachim Weinmann, Hubert Vogler, Gabriele Schuhmann-Giampieri, Juergen Conrad
  • Publication number: 20030202943
    Abstract: Compounds of general formula I 1
    Type: Application
    Filed: March 25, 2003
    Publication date: October 30, 2003
    Applicant: Schering Aktiengesellschaft
    Inventors: Heinz Gries, Erich Klieger, Bernd Raduchel, Heribert Schmitt-Willich, Hanns-Joachim Weinmann, Hubert Vogler, Gabriele Schuhmann-Giampieri, Jurgen Conrad
  • Patent number: 6565830
    Abstract: Compounds of formula I wherein Z1, Z2, X, R2 and R3 are as defined herein, are suitable as susceptibility reagents for use in susceptibility imaging.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: May 20, 2003
    Assignee: Schering Aktiengesellschaft
    Inventors: Heinz Gries, Erich Klieger, Bernd Radüchel, Heribert Schmitt-Willich, Hanns-Joachim Weinmann, Hubert Vogler, Gabriele Schuhmann-Giampieri, Jürgen Conrad
  • Patent number: 6287538
    Abstract: Chelate compounds of general formula I wherein X is a hydrogen atom and/or a metal ion equivalent of an element of atomic numbers 21-29, 31, 32, 37-40, 42-44, 49 or 57-83, and Z1, Z2, R1, R2, R3 and R4 are as defined herein, as well as their salts with inorganic and/or organic bases, amino acids or amino acid amides, are valuable pharmaceutical agents, e.g., for NMR imaging.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: September 11, 2001
    Assignee: Schering Aktiengesellschaft
    Inventors: Heinz Gries, Erich Klieger, Bernd Radüchel, Heribert Schmitt-Willich, Hanns-Joachim Weinmann, Hubert Vogler, Gabriele Schuhmann-Giampieri, Jürgen Conrad
  • Patent number: 5859214
    Abstract: Compounds of general formula I ##STR1## wherein Z.sup.1, Z.sup.2, X, R.sup.2 and R.sup.3 are as herein defined, are valuable pharmaceutical agents. In particular, the compounds are useful as contrast agents in NMR diagnosis.
    Type: Grant
    Filed: April 15, 1994
    Date of Patent: January 12, 1999
    Assignee: Schering Aktiengesellshaft
    Inventors: Heinz Gries, Erich Klieger, Bernd Raduchel, Heribert Schmitt-Willich, Hanns-Joachim Weinmann, Hubert Vogler, Gabriele Schuhmann-Giampieri, Jurgen Conrad
  • Patent number: 5843399
    Abstract: Chelate compounds of general formula I ##STR1## wherein X is a hydrogen atom and/or a metal ion equivalent of an element of atomic numbers 21-29, 31, 32, 37-40, 42-44, 49 or 57-83, andZ.sup.1, Z.sup.2, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined herein, as well as their salts with inorganic and/or organic bases, amino acids or amino acid amides, are valuable pharmaceutical agents, e.g., for NMR imaging.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 1, 1998
    Assignee: Schering Aktiengesellschaft
    Inventors: Heinz Gries, Erich Klieger, Bernd Raduchel, Heribert Schmitt-Willich, Hanns-Joachim Weinmann, Hubert Vogler, Gabriele Schuhmann-Giampieri, Jurgen Conrad
  • Patent number: 5693309
    Abstract: 1. Compounds of general Formula I ##STR1## wherein n and m in each case mean the numbers 0, 1, 2, 3 and 4,X stands for a hydrogen atom and/or a metal ion equivalent of an element of atomic numbers 21-29, 31, 32, 37-39, 42-44, 49 or 57-83,R.sup.1 and R.sup.2, being different, mean in each case a hydrogen atom or a straight-chain, branched, saturated or unsaturated C.sub.0 -C.sub.20 -alkylene group, this alkylene group exhibiting at the end either a second molecule of general Formula I.sub.A or I.sub.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 2, 1997
    Assignee: Schering Aktiengesellschaft
    Inventors: Julius Deutsch, Heinz Gries, Erich Klieger, Ulrich Niedballa, Franz-Josef Renneke, Jurgen Conrad, Wolfgang Muetzel, Heribert Schmitt-Willich
  • Patent number: 5482700
    Abstract: 1. Compounds of general Formula I ##STR1## wherein n and m in each case mean the numbers 0, 1, 2, 3 and 4,X stands for a hydrogen atom and/or a metal ion equivalent of an element of atomic numbers 21-29, 31, 32, 37-39, 42-44, 49 or 57-83,R.sup.1 and R.sup.2, being different, mean in each case a hydrogen atom or a straight-chain, branched, saturated or unsaturated C.sub.0 -C.sub.20 -alkylene group which optionally contains imino, phenylenoxy, phenylenimino, amido, hydrazido, ester group(s), oxygen, sulfur and/or nitrogen atom(s) and is substituted, if desired, by hydroxy, mercapto, imino, epoxy, oxo, thioxo and/or amino group(s), this alkylene group exhibiting at the end either a second molecule of general Formula I.sub.A or I.sub.B ##STR2## a functional group, or, linked by way of this functional group, a bio- or macromolecule,are valuable diagnostic and therapeutic media.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: January 9, 1996
    Assignee: Schering Aktiengesellschaft
    Inventors: Julius Deutsch, Heinz Gries, Erich Klieger, Ulrich Niedballa, Franz-Josef Renneke, Juergen Conrad, Wolfgang Muetzel
  • Patent number: 4364921
    Abstract: New triiodinated isophthalic acid diamides of the formula ##STR1## wherein the amide residues --CO--N.R.sub.1 R.sub.2 and --CO--N.R.sub.3 R.sub.4 are different from each other andR.sub.1 is hydrogen or C.sub.1-6 alkyl,R.sub.2 is mono- or polyhydroxyalkyl,R.sub.3 is hydrogen or C.sub.1-6 alkyl,R.sub.4 is mono- or polyhydroxylalkyl,R.sub.5 is C.sub.1-6 alkyl or mono- or polyhydroxy-C.sub.1-6 -alkyl or C.sub.1-3 -alkoxy-C.sub.1-3 -alkyl, andR.sub.6 is hydrogen, C.sub.1-6 alkyl or mono- or polyhydroxyalkyl provide superior nonionic X-ray contrast media.
    Type: Grant
    Filed: March 6, 1980
    Date of Patent: December 21, 1982
    Assignee: Schering, Aktiengesellschaft
    Inventors: Ulrich Speck, Peter Blaszkiewicz, Dieter Seidelmann, Erich Klieger
  • Patent number: 4283381
    Abstract: Compounds of the formula ##STR1## wherein X is alkylene, optionally substituted by hydroxy, methoxy or amino;R.sup.1 is hydrogen or C.sub.1-4 alkyl;R.sup.2 is hydrogen, C.sub.1-4 alkyl, or C.sub.2-4 -alkyl substituted by 1-3 OH groups;R.sup.3 is hydrogen, C.sub.1-4 alkyl, or C.sub.2-4 -alkyl substituted by 1-3 OH groups;R.sup.4 is hydrogen, C.sub.1-4 -alkyl, or C.sub.2-4 -alkyl substituted by 1-3 OH groups;R.sup.5 is C.sub.2-4 -alkyl substituted by 1-3 OH groups;R.sup.6 is hydrogen, C.sub.1-4 -alkyl or C.sub.2-4 -alkyl substituted by 1-3 OH groups; andR.sup.7 is C.sub.2-4 -alkyl substituted by 1-3 OH groups,or a salt thereof with an acidare useful as opaquing agents in x-ray contrast media.
    Type: Grant
    Filed: July 11, 1980
    Date of Patent: August 11, 1981
    Assignee: Schering Aktiengesellschaft
    Inventors: Ulrich Speck, Erich Klieger, Wolfgang Mutzel
  • Patent number: 4264572
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is C.sub.1-4 alkyl, C.sub.1-4 alkyl substituted by OH or C.sub.1-2 alkoxy; R.sub.2, R.sub.3 and R.sub.4 are independently each hydrogen or C.sub.1-4 alkyl; Z is --A--NHCH.sub.3 or when R.sub.1 is hydroxy or alkoxy substituted alkyl and/or when R.sub.3 is lower alkyl, Z can also be hydroxy-C.sub.2-5 -alkylamino;R.sub.5 is C.sub.1-4 alkyl or C.sub.1-4 alkyl substituted by OH; n is 1, 2 or 3; and A is: ##STR2## wherein R.sub.7 is H or C.sub.1-4 alkyl; R.sub.8 is H, C.sub.1-4 alkyl or C.sub.1-4 alkyl substituted by OH or C.sub.1-2 alkoxy; or together R.sub.7 and R.sub.8 form a propylene or hydroxypropylene ring; and m is 0 or 1;or an ester thereof with a C.sub.1 -C.sub.4 alkanol or a physiologically acceptable salt thereof with a base, are valuable as X-ray contrast media.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: April 28, 1981
    Assignee: Schering Aktiengesellschaft
    Inventors: Erich Klieger, Wolfgang Mutzel
  • Patent number: 4132731
    Abstract: Iodized isophthalamic acid compounds of the formula ##STR1## wherein R.sub.1 is straight-chain or branched lower hydroxyalkyl;R.sub.2 is hydroxymethyl or a lower, straight-chain or branched alkyl of at least 2 carbon atoms, which can be interrupted by one or more oxygen atoms, or is ##STR2## wherein Z is a carbon-to-carbon bond or a straight-chain or branched hydrocarbon which can be interrupted by one or more oxygen atoms, or when R.sub.1 is other than --CH.sub.2 --CH.sub.2 --OH, is methyl; and the salts thereof with physiologically acceptable inorganic or organic bases, are x-ray contrast agents.
    Type: Grant
    Filed: June 14, 1977
    Date of Patent: January 2, 1979
    Assignee: Schering Aktiengesellschaft
    Inventors: Erich Klieger, Ulrich Speck
  • Patent number: 4032567
    Abstract: New amino acid derivative of acylamino-5-alkylcarbamoyl-2,4,6-triiodobenzoic acids are described together with processes for their preparation and use and novel intermediates useful in preparing these compounds. The compounds are valuable radiopaque agents useful as X-ray contrast media.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: June 28, 1977
    Assignee: Schering Aktiengesellschaft
    Inventors: Erich Klieger, Wolfgang Beich, Eberhard Schroder
  • Patent number: 3953501
    Abstract: New amino acid derivative of acylamino-5-alkylcarbamoyl-2,4,6-triiodobenzoic acids are described together with processes for their preparation and use and novel intermediates useful in preparing these compounds. The compounds are valuable radiopaque agents useful as X-ray contrast media.
    Type: Grant
    Filed: February 9, 1973
    Date of Patent: April 27, 1976
    Assignee: Schering Aktiengesellschaft
    Inventors: Erich Klieger, Wolfgang Beich, Eberhard Schroder