Patents by Inventor Rudolf Kruger

Rudolf Kruger 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: 6767448
    Abstract: From 5 to 60% by weight aqueous alkaline solutions of reduced indigoid dyes are prepared by reducing the indigoid dye electrochemically in the presence of a mediator.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: July 27, 2004
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Thomas Bechtold, Rudolf Krüger, Hans-Peter Maier, Georg Schnitzer, Franz Sütsch, Wolfgang Schrott, Norbert Grund
  • Patent number: 6730132
    Abstract: A process for reduction clearing dyed or printed polyester textiles, which comprises adding, to an acidic dyeing liquor or a wash bath, an aftertreatment composition comprising as components a) at least one compound of the formula (I) Am[(CR1R2)mSO2M]p,q  (I)  where A is NR33−q or OR42−p; p,q means q when A is NR33−q, and p when A is OR42−p; R1, R2, R4 are each hydrogen or C1-C6-alkyl; R3 represents identical or different radicals selected from the group consisting of hydrogen, C1-C20-alkyl, C3-C8-cycloalkyl opt.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: May 4, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Eberhard Beckmann, Rudolf Krüger, Ulrich Karl, Claus Tritschler
  • Patent number: 6428581
    Abstract: Concentrated leuco indigo solutions useful for dyeing cellulosic textile material consist essentially of from 25 to 55% by weight of leuco indigo in the form of the leuco indigo salt, an amount which is essentially stoichiometrically sufficient to convert the leuco indigo into the neutral leuco indigo salt of a mixture of at least two alkali metal hydroxides wherein none of the alkali metal hydroxides accounts for more than 70 mol %, and water.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: August 6, 2002
    Assignee: DyStar Textilfarben GmbH & Co. Deutschland KG
    Inventors: Manfred Gäng, Rudolf Krüger, Peter Miederer
  • Patent number: 6353131
    Abstract: Sulfinic derivatives such as zinc dithionite, sodium dithionite, zinc or sodium hydroxymethyl sulfinate or zinc or sodium hydroxy-ethyl sulfinate, their condensation products with ammonia, and aminoiminomethanesulfinic acid are stabilized to degradation by admixture of potassium carbonate.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: March 5, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Eberhard Beckmann, Rudolf Krüger
  • Patent number: 6007587
    Abstract: Granules comprising as essential constituents a leuco vat dye, an alkali metal hydroxide and a mixture of from 10 to 100% by weight of an .alpha.-hydroxy-C.sub.1 -C.sub.4 -alkylsulfinic acid, one of its salts or derivatives and from 0 to 90% by weight of hydrosulfite as reductant, are prepared and used for dyeing cellulosic textile material.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: December 28, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Gang, Rudolf Kruger, Peter Miederer, Eberhard Beckmann
  • Patent number: 6004358
    Abstract: The disclosure is a process for batchwise dyeing of cellulosic textile material with indigo by the exhaust method, which comprises applying the reduced indigo to the textile material from an aqueous dyeing liquor which includes a reductant, an alkali and additionally a further dissolved alkali metal salt in a concentration of from 200 to 350 g/l as electrolyte and whose pH has been set to 10.2-11.3, oxidizing the reduced indigo on the fiber back to the pigment while maintaining the high electrolyte concentration, and finishing the dyeing in a conventional manner.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: December 21, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Rudolf Kruger, Gert Rainer Kuhnel, Georg Schnitzer
  • Patent number: 5984980
    Abstract: Continuous dyeing of cellulose-containing yarn with indigo in a single operation is disclosed, in that the reduced indigo from an aqueous dye liquor containing reducing agents, alkali, and additionally a further dissolved alkali metal salt in a concentration of 200 to 350 g/l as the electrolyte, and whose pH value has been adjusted to 10.2 to 11.3, is applied to the yarn. The reduced indigo absorbed by the fibers is oxidized again to pigment while maintaining the high concentration of electrolyte, and the dye process is finished in the customary manner.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: November 16, 1999
    Inventors: Rudolf Kruger, Franz Sutach
  • Patent number: 5935273
    Abstract: A process for continuous dyeing of cellulose-containing yarn with indigo in a single passage applies reduced indigo from an aqueous dye liquor containing deoxidants, alkali and a dissolved alkali metal salt at a concentration of 100 to 200 g/l as an electrolyte at a pH value of the liquor adjusted to about 10.2 to 11.3, while maintaining the electrolyte concentration, exposing the yarn to a gas which dissolves in the aqueous medium while forming an acid, and then oxidizing reduced indigo in the yarn to form pigment and finishing the dyeing process in a customary manner.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: August 10, 1999
    Inventors: Rudolf Kruger, Franz Sutsch
  • Patent number: 5888254
    Abstract: Granular leuco vat-dye preparations containing, as essential components, leuco vat-dye, reducing agents and alkaline metal hydroxide, and the production of said preparations and their use in dyeing cellulose-containing textile materials.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: March 30, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Gang, Rudolf Kruger, Peter Miederer, Harald Schluter, Peter Schultz, Manfred R. Wolf
  • Patent number: 4889870
    Abstract: There are provided new 2-(2,2-difluorocyclopropyl)alkyl esters of general formula I ##STR1## in which Y, R.sub.1-7 and n have the meanings given in the description and processes for their preparation. The new compounds can be used to combat insects and mites.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: December 26, 1989
    Assignee: Schering Aktiengesellschaft
    Inventors: Peter Wegner, Hans-Rudolf Kruger, Dietrich Baumert, Hartmut Joppien
  • Patent number: 4791123
    Abstract: There are provided new alkane and alkoxyalkane derivatives of the general formula I ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4 and A have the meanings given in the description, processes for their preparation and insecticidal and acaricidal compositions containing these compounds.
    Type: Grant
    Filed: January 22, 1987
    Date of Patent: December 13, 1988
    Assignee: Schering Akt.
    Inventors: Helga Franke, Heinrich Franke, Hans-Rudolf Kruger, Hartmut Joppien, Dietrich Baumert, David Giles
  • Patent number: 4743622
    Abstract: The invention relates to new aromatic alkane derivatives of the general formula ##STR1## in which R.sub.1 is aryl or aryl substituted by C.sub.1-4 alkyl, halo-C.sub.1-4 alkyl, phenyl-C.sub.1-4 alkyl, C.sub.2-4 alkenyl, halo-C.sub.2-4 alkenyl, phenyl-C.sub.2-4 alkenyl, C.sub.2-4 alkynyl, halo-C.sub.2-4 alkynyl, phenyl-C.sub.2-4 alkynyl, C.sub.1-4 alkoxy, halo-C.sub.1-4 alkoxy, phenyl-C.sub.1-4 alkoxy, C.sub.2-4 alkenyloxy, halo-C.sub.2-4 alkenyloxy, phenyl-C.sub.2-4 alkenyloxy, C.sub.2-4 alkynyloxy, halo-C.sub.2-4 alkynyloxy, phenyl-C.sub.2-4 alkynyloxy, alkylsulphonyloxy, haloalkylsulphonyloxy, arylsulphonyloxy, halo, cyano, nitro, aryloxy, haloaryloxy, C.sub.1-4 alkyl-aryloxy, or nitroaryloxy,R.sub.2 is hydrogen or C.sub.1-4 alkyl,R.sub.3 is hydrogen, cyano or ethynyl,R.sub.4 is phenyl or pyridyl or these groups substituted by one or more of C.sub.1-6 alkyl, halo-C.sub.1-6 alkyl, phenyl-C.sub.1-6 alkyl, C.sub.1-6 alkyl interrupted by an O-, N- or S- atom, C.sub.2-4 alkenyl, halo-C.sub.2-4 alkenyl, phenyl-C.
    Type: Grant
    Filed: February 11, 1986
    Date of Patent: May 10, 1988
    Assignee: Schering Aktiengesellschaft
    Inventors: Helga Franke, Heinrich Franke, Hans-Rudolf Kruger, Hartmut Joppien
  • Patent number: 4709077
    Abstract: Novel 7-(Aryloxy)-2-naphthoxyalkanecarboxylic acid derivatives of the formula I ##STR1## in racemic or separated isomeric form, have herbicidal activity.
    Type: Grant
    Filed: September 17, 1985
    Date of Patent: November 24, 1987
    Assignee: Schering Aktiengesellschaft
    Inventors: Michael Harre, Hans-Rudolf Kruger, Friedrich Arndt, Reinhart Rusch
  • Patent number: 4678811
    Abstract: New substituted benzyl-type ethers of formula I ##STR1## in which R.sub.1 is aryl or aryl substituted by C.sub.1-4 -alkyl, halo-C.sub.1-4 -alkyl, phenyl-C.sub.1-4 -alkyl, C.sub.2-4 -alkenyl, halo-C.sub.2-4 -alkenyl, phenyl-C.sub.2-4 -alkenyl, C.sub.2-4 -alkynyl, halo-C.sub.2-4 -alkynyl, phenyl-C.sub.2-4 -alkynyl, C.sub.1-4 -alkoxy, halo-C.sub.1-4 -alkoxy, phenyl-C.sub.1-4 -alkoxy, C.sub.2-4 -alkenyloxy, halo-C.sub.2-4 -alkenyloxy, phenyl-C.sub.2-4 -alkenyloxy, C.sub.2-4 -alkynyloxy, halo-C.sub.2-4 -alkynyloxy, phenyl-C.sub.2-4 -alkynyloxy, alkylsulfonyloxy, haloalkylsulfonyloxy, arylsulfonyloxy, halo, cyano, nitro, aryloxy, haloaryloxy, C.sub.1-4 -alkyl-aryloxy, or nitroaryloxy,R.sub.2 is hydrogen or C.sub.1-4 alkyl,R.sub.3 is hydrogen, cyano or ethynyl,R.sub.4 is phenyl or pyridyl or one of these groups substituted by one or more of C.sub.1-6 -alkyl, halo-C.sub.1-6 -alkyl, phenyl-C.sub.1-6 -alkyl, C.sub.1-6 -alkyl interrupted by an O--, N-- or S-- atom, C.sub.2-4 -alkenyl, halo-C.sub.2-4 -alkenyl, phenyl-C.
    Type: Grant
    Filed: October 17, 1985
    Date of Patent: July 7, 1987
    Assignee: Schering Aktiengesellschaft
    Inventors: Helga Franke, Heinrich Franke, Hans-Rudolf Kruger, Hartmut Joppien
  • Patent number: 4601748
    Abstract: New 2-phenoxy propionic acid derivatives of pentite are disclosed, of the general Formula ##STR1## in which one of the substituents Y is the group ##STR2## and pairs of other substituents Y are the group ##STR3## wherein Z is phenyl, 2-pyridyl, or 2-quinoxalinyl, or phenyl, 2-pyridyl or 2-quinoxalinyl substituted one or more times the same or differently by halogen, C.sub.1 -C.sub.6 -alkoxy, C.sub.1 -C.sub.6 -alkyl, nitro or trifluoromethyl andR.sub.1 and R.sub.2 are the same or different and are each hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -alkyl substituted one or more times the same or differently by halogen, C.sub.1 -C.sub.6 -alkoxy, phenoxy or halogen phenoxy, aryl-C.sub.1 -C.sub.3 -alkyl, aryl-C.sub.1 -C.sub.3 -alkyl substituted one or more times the same or differently by C.sub.1 -C.sub.6 -alkyl, halogen, C.sub.1 -C.sub.6 -alkoxy, nitro or trifluoromethyl, C.sub.3 -C.sub.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: July 22, 1986
    Assignee: Schering Aktiengesellschaft
    Inventors: Hans-Rudolf Kruger, Friedrich Arndt
  • Patent number: 4591376
    Abstract: New 1,2,3-thiadiazol-3-in-5-yliden-urea derivatives are disclosed of the general formula ##STR1## in which R.sub.1 is hydrogen or an, if necessary, interrupted one or more times oxygen or sulfur atom, C.sub.1 -C.sub.4 -alkyl group,R.sub.2 is an, if necessary interrupted one or more times by oxygen or sulfur atoms C.sub.1 -C.sub.4 -alkyl group, an, if necessary, substituted one or more times by alkyl C.sub.3 -C.sub.8 cycloalkyl group, an, if necessary, substituted one or more times by alkyl and/or halogen and/or alkylthio and/or alkoxy and/or trifluoromethyl and/or nitro aromatic hydrocarbon group or an, if necessary, substituted heterocyclic, at least one N-atom-containing, hydrocarbon group or R.sub.1 and R.sub.2 together with the N-atom are morpholino-, piperidino- or pyrolidino,R.sub.3 is an, if necessary, substituted C.sub.1 -C.sub.10 -alkyl group, a C.sub.2 -C.sub.6 -alkenyl, or C.sub.3 -C.sub.6 -alkenyl group, or an, if necessary, substituted aryl-C.sub.1 -C.sub.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: May 27, 1986
    Assignee: Schering Aktiengesellschaft
    Inventors: Hansjorg Krahmer, Reinhart Rusch, Hans-Rudolf Kruger, Volkert Sjut
  • Patent number: 4515619
    Abstract: New 1,2,3-thiadiazole-5-yl-urea derivatives as plant growth regulating agents are provided, including processes for producing and using these compounds. The new 1,2,3-thiadiazole-5-yl-urea derivatives have the formula ##STR1## in which R.sub.1 is an aromatic hydrocarbon group which may be substituted with one or more members of the group consisting of C.sub.1 -C.sub.6 -alkyl, halogen, C.sub.1 -C.sub.6 -alkoxy, nitro and trifluoromethyl and R.sub.2 is hydrogen, a monovalent metal or its metal equivalent, a substituted or unsubstituted C.sub.1 -C.sub.6 -alkyl, a C.sub.3 -C.sub.6 -alkenyl or alkinyl, a substituted or unsubstituted aryl- C.sub.1 -C.sub.2 -alkyl or the group aryl-C.sub.1 -C.sub.2 -alkyl ##STR2## wherein R.sub.3 is hydrogen, a substituted or unsubstituted C.sub.1 -C.sub.10 -alkyl, C.sub.2 -C.sub.6 -alkenyl, a C.sub.2 -C.sub.6 -alkenyl, an aryl-C.sub.1 -C.sub.2 -alkyl, a C.sub.3 -C.sub.8 -cycloaliphatic hydrocarbon group which may be substituted with one or more C.sub.1 -C.sub.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: May 7, 1985
    Assignee: Schering Aktiengesellschaft
    Inventors: Hans-Rudolf Kruger, Friedrich Arndt, Reinhard Rusch
  • Patent number: 4491466
    Abstract: New 1,2,3-thiadiazole-5-yl-urea derivatives of the formula ##STR1## wherein R.sub.1 is hydrogen or a C.sub.1 -C.sub.4 alkyl group which may be interrupted by one or more sulfur or oxygen atoms, R.sub.2 is a C.sub.1 -C.sub.4 alkyl which may be interrupted by one or more sulfur or oxygen atoms, a cycloaliphatic hydrocarbon group which may be substituted by one or more alkyl groups, an aromatic hydrocarbon group which may be substituted by one or more members of the group consisting of alkyl, halogen, alkyl thio, alkoxy, trifluoromethyl and nitro, or a heterocyclic hydrocarbon group which may be substituted containing at least one nitrogen atom, R.sub.3 is hydrogen, a C.sub.1 -C.sub.10 alkyl group which may be substituted, a C.sub.2 -C.sub.8 alkenyl, an aryl-C.sub.1 -C.sub.2 alkyl, a C.sub.3 -C.sub.8 -cycloaliphatic hydrocarbon group which may be substituted with one or more C.sub.1 -C.sub.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: January 1, 1985
    Assignee: Schering AG
    Inventors: Hans-Rudolf Kruger, Friedrich Arndt, Reinhard Rusch
  • Patent number: 4474596
    Abstract: The invention concerns new xylite derivatives, methods for the production of these compounds as well as compositions containing them having growth regulatory activity for plants.
    Type: Grant
    Filed: May 19, 1982
    Date of Patent: October 2, 1984
    Assignee: Schering Aktiengesellschaft
    Inventors: Hans-Rudolf Kruger, Reinhold Puttner, Hansjorg Krahmer, Ernst A. Pieroh
  • Patent number: RE37087
    Abstract: There are provided new alkane and alkoxyalkane derivatives of the general formula I in which R1, R2, R3, R4 and A have the meanings given in the description, processes for their preparation and insecticidal and acaricidal compositions containing these compounds.
    Type: Grant
    Filed: June 20, 1991
    Date of Patent: March 6, 2001
    Assignee: Schering Aktiengesellschaft
    Inventors: Helga Franke, Heinrich Franke, Hans-Rudolf Kruger, Hartmut Joppien, Dietrich Baumert, David Giles