Patents by Inventor Kurt Ley

Kurt Ley 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).

  • 3-Amino-1,2,4-benzotriazine-1,4-di-N-oxide compositions and method of using same
    Patent number: 3980779
    Abstract: Pharmaceutical compositions comprising a 3-amino-1,2,4-benzotriazine-1,4-di-N-oxide as the active ingredient and method of using same. Said compositions exhibit antimicrobial activity and may be used to promote livestock growth by adding an effective amount of said composition to edible fodder.
    Type: Grant
    Filed: April 29, 1974
    Date of Patent: September 14, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt Ley, Florin Seng, Karl Georg Metzger
  • Compositions containing a carbonamidoquinoxaline-di-N-oxide and method of using same
    Patent number: 3957987
    Abstract: Animal feedstuffs are produced which comprise an antibacterially effective amount of a compound of the formula ##SPC1##WhereinEach of R.sup.1 and R.sup.2, independent of the other, is hydrogen, lower alkyl, hydroxy(lower alkyl), (lower alkoxy)lower alkyl, cyclopentyl, cyclohexyl or cycloheptyl, or R.sup.1 and R.sup.2, together with the nitrogen atom to which they are attached, are pyrrolidino, piperidino, hexamethyleneimino, morpholino or thiomorpholino; and ##EQU1## in which Y is an oxygen or sulfur atom and R.sup.3 is lower alkyl, hydroxy(lower alkoxy), lower alkoxy, pyridyl, or NR.sup.5 R.sup.6 in which each of R.sup.5 and R.sup.6, independent of the other, is hydrogen, lower alkyl, hydroxy(lower alkyl) or lower alkoxy(lower alkyl), or R.sup.5 and R.sup.6, together with the nitrogen atom to which they are attached, are pyrrolidino, piperidino, hexamethyleneimino, morpholino or thiomorpholino;In combination with an animal feed or water.
    Type: Grant
    Filed: September 26, 1974
    Date of Patent: May 18, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Florin Seng, Kurt Ley, Karl Georg Metzger
  • Benzo-1,2,4-triazines
    Patent number: 3957779
    Abstract: Benzo-1,2,4-triazines-1,4-di-N-oxides substituted in the 3-position with a substituted amino group and optionally substituted in the benzo ring are antimicrobial agents. The compounds, of which 3-(N-acetoacetylamino)benzo-1,2,4-triazine-1,4-di-N-oxide is a typical embodiment, are prepared from the corresponding 2-aminobenzo-1,2,4-triazine-1,4-di-N-oxide through alkylation or acylation.
    Type: Grant
    Filed: November 8, 1973
    Date of Patent: May 18, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Florin Seng, Kurt Ley, Karl Georg Metzger
  • Light-sensitive material having developers embedded therein
    Patent number: 3951664
    Abstract: A photographic material having a light-sensitive silver salt emulsion layer which layer contains a silver salt developer of the chroman series having the formula defined below.
    Type: Grant
    Filed: June 24, 1974
    Date of Patent: April 20, 1976
    Assignee: AGFA-Gevaert, A.G.
    Inventors: Anita von Konig, Helmut Kampfer, Ernst Roos, Kurt Ley
  • Polyamines containing acid groups
    Patent number: 3932363
    Abstract: Water-soluble polyamines which (a) have an average molecular weight of above 1,000 (b) contain at least one grouping of the formula--R--Zin whichZ denotes a --COOH or --SO.sub.
    Type: Grant
    Filed: November 10, 1972
    Date of Patent: January 13, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Lehmann, Gerhard Troemel, Kurt Ley, Friedhelm Muller