Patents by Inventor Jorg Botzem

Jorg Botzem 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: 6527932
    Abstract: Methods of preparing or purifying onium hydroxides of the elements N, S or P by electrodialysis involve an electrodialysis apparatus comprising one or more cell units, each cell unit comprising a bipolar membrane and an anion-selective membrane, and a bipolar membrane or a cation-selective membrane being located on the anode side between the last anion-selective membrane and the anode.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: March 4, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Jörg Botzem, Reiner Kober, Markus Frede
  • Patent number: 6410744
    Abstract: Carbonyldiimidazoles of the formulae Ia, Ib, Ic or mixtures thereof where R1 is C1-4-alkyl and R2 is hydrogen or methyl, and tert-butyl esters derived therefrom are described.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: June 25, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Armin Stamm, Manfred Julius, Alois Kindler, Michael Henningsen, Jörg Botzem
  • Patent number: 6348593
    Abstract: A process for preparing folic acid, which comprises reacting a tetraalkoxypropanol of the general formula I, in which the substituents R are C1-C4-alkyl, with triaminopyrimidone of the formula II and p-aminobenzoyl-L-glutamic acid of the formula III
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: February 19, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Jörg Botzem, Hagen Jaedicke, Michael John, Joachim Paust
  • Patent number: 6316676
    Abstract: The process for the preparation of carbonyl compounds of the formula I where R1 and R2 are a hydrocarbon radical, or R1 and R2 together are an unsubstituted or substituted alkylene group, and X is ═O or two alkoxy groups, comprises oxidizing alcohols of the formula II  where R1 to R2 and X are as defined above, with oxygen in the gaseous phase a) at temperatures of from 270 to 600° C. on silver coated catalysts which comprise an abrasion-resistant coating of metallic silver on a core of inert support material, or b) at temperatures of from 450 to 750° C. on silver crystals and/or copper crystals having a particle size of from 0.1 to 2.5 mm for a residence time of at most 0.1 second. Also claimed is an advantageous overall process for the preparation of &agr;-diketones, preferably diacetal, from the corresponding ketone, in particular methyl ethyl ketone, via the carbonyl compounds of the formula I where X is two alkoxy groups.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: November 13, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Aquila, Jörg Botzem, Melanie Brunner, Hartwig Fuchs, Wolfgang Krause, Klaus Pandl, Ulrich Schäfer-Lüderssen
  • Patent number: 6288009
    Abstract: The invention provides novel mepiquat plant growth regulator compositions which have improved hygroscopicity and corrosion characteristics. The novel mepiquat plant growth regulator compositions of the invention can be readily prepared from technical mepiquat chlorid inter alia by electrochemical ion exchange processes or by quaternization of N-methylpiperidine with dimethylcarbonate as starting material.
    Type: Grant
    Filed: April 10, 1998
    Date of Patent: September 11, 2001
    Assignees: BASF Corporation, BASF Aktiengesellschaft
    Inventors: Reiner Kober, David G. Hobbs, Scott W. Gibson, Kenneth Eugene Fersch, Wilhelm Rademacher, Jörg Botzem, Markus Frede, Matthias Dernbach, Reimer Göttsche, Reinhard Dötzer
  • Patent number: 6248694
    Abstract: The invention provides novel mepiquat plant growth regulator compositions which have improved hygroscopicity and corrosion characteristics. The novel mepiquat plant growth regulator compositions of the invention can be readily prepared from technical mepiquat chlorid inter alia by electrochemical ion exchange processes or by quaternization of N-methylpiperidine with dimethylcarbonate as starting material.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: June 19, 2001
    Assignees: BASF Aktiengesellschaft, BASF Corporation
    Inventors: Reiner Kober, David G. Hobbs, Scott W. Gibson, Kenneth Eugene Fersch, Wilhelm Rademacher, Jörg Botzem, Markus Frede, Matthias Dernbach, Reimer Göttsche, Reinhard Dötzer
  • Patent number: 6242653
    Abstract: The process for the preparation of carbonyl compounds of the formula I where R1 and R2 are a hydrocarbon radical, or R1 and R2 together are an unsubstituted or substituted alkylene group, and X is=O or two alkoxy groups, comprises oxidizing alcohols of the formula II where R1 to R2 and X are as defined above, with oxygen in the gaseous phase a) at temperatures of from 270 to 600° C. on silver coated catalysts which comprise an abrasion-resistant coating of metallic silver on a core of inert support material, or b) at temperatures of from 450 to 750° C. on silver crystals and/or copper crystals having a particle size of from 0.1 to 2.5 mm for a residence time of at most 0.1 second. Also claimed is an advantageous overall process for the preparation of &agr;-diketones, preferably diacetal, from the corresponding ketone, in particular methyl ethyl ketone, via the carbonyl compounds of the formula I where X is two alkoxy groups.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: June 5, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Aquila, Jörg Botzem, Melanie Brunner, Hartwig Fuchs, Wolfgang Krause, Klaus Pandl, Ulrich Schäfer-Lüderssen
  • Patent number: 6224734
    Abstract: The invention provides novel mepiquat plant growth regulator compositions which have improved hygroscopicity and corrosion characteristics. The novel mepiquat plant growth regulator compositions of the invention can be readily prepared from technical mepiquat chlorid inter alia by electrochemical ion exchange processes or by quaternization of N-methylpiperidine with dimethylcarbonate as starting material.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: May 1, 2001
    Assignees: BASF Aktiengesellschaft, BASF Corporation
    Inventors: Reiner Kober, David G. Hobbs, Scott W. Gibson, Kenneth Eugene Fersch, Wilhelm Rademacher, Jörg Botzem, Markus Frede, Matthias Dernbach, Reimer Göttsche, Reinhard Dötzer
  • Patent number: 6011182
    Abstract: The present invention relates to a process for preparing 2-cyclo-alkenones of the formula I ##STR1## which comprises subjecting a 2-alkoxycycloalkanone and/or a 2-hydroxyalkanone ketal, in which n is an integer from 0 to 20, m is 0, 1, 2 or 3 and R is alkyl, alkylaryl, aryl, arylalkyl, alkenyl or alkynyl, to an elimination reaction in the gas phase on an acidic heterogeneous catalyst.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: January 4, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Eiermann, Klaus Ebel, Jorg Botzem