Patents by Inventor Norbert Rieber

Norbert Rieber 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: 7518004
    Abstract: Process for the catalyzed reaction of an organic compound with a hydroperoxide in at least one reactor using at least two different zeolite catalysts, wherein at least two of the different zeolite catalysts are used physically separately from one another.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: April 14, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Mueller, Peter Bassler, Joaquim Henrique Teles, Norbert Rieber
  • Publication number: 20060217576
    Abstract: Process for the catalyzed reaction of an organic compound with a hydroperoxide in at least one reactor using at least two different zeolite catalysts, wherein at least two of the different zeolite catalysts are used physically separately from one another.
    Type: Application
    Filed: May 10, 2004
    Publication date: September 28, 2006
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Ulrich Müller, Peter Bassler, Joaquim Teles, Norbert Rieber
  • Patent number: 7081237
    Abstract: Process for the preparation of a crystalline solid comprising at least one zeolitic material, in which the solid is crystallized from at least one precursor compound and the reaction discharge of the crystallization is fed directly to a drying stage.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: July 25, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Mueller, Friedrich Hill, Norbert Rieber
  • Patent number: 7026493
    Abstract: An organic compound having at least one C—C double bond is epoxidized by means of hydrogen peroxide in the presence of at least one catalytically active compound and at least one solvent, wherein a product mixture comprising ?-hydroperoxyalcohols is reduced using at least one reducing agent.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: April 11, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Joaquim Henrique Teles, Alwin Rehfinger, Anne Berg, Peter Rudolf, Norbert Rieber, Peter Bassler
  • Patent number: 6958304
    Abstract: A process for the regeneration of a zeolite catalyst which comprises treating the catalyst thermally in the presence of a gas stream at temperatures above 120° C., the weight-based residence time of the gas stream over the catalyst during the thermal treatment being greater than 2 hours.
    Type: Grant
    Filed: September 11, 2001
    Date of Patent: October 25, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Joaquim Henrique Teles, Alwin Rehfinger, Peter Bassler, Anne Wenzel, Norbert Rieber, Ulrich Müller, Peter Rudolf
  • Patent number: 6881853
    Abstract: A process for preparing propylene oxide comprises at least the following steps: (a) propene is reacted with a hydroperoxide in a solvent in the presence of a zeolite catalyst to give a mixture (M0), where the mixture (M0) comprises propylene oxide, solvent, unreacted propene, unreacted hydroperoxide and oxygen, (b) the propylene oxide is separated from the mixture (M0) so as to give a mixture (M1) which comprises unreacted propene and oxygen, (c) the mixture (M1) is brought into contact with a liquid medium comprising at least a solvent to give the mixtures (M2) and (M3), where the mixture (M3) comprises part of the unreacted propene and oxygen and the mixture (M2) comprises solvent and residual propene, and ?the mixture (M3) which has been separated off and comprises unreacted propene and oxygen has a ratio of oxygen to propene such that the mixture (M3) is not ignitable, and ?the mixture (M2) is fed to at least one reaction of propene with hydroperoxide.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: April 19, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Joaquim Henrique Teles, Alwin Rehfinger, Anne Berg, Peter Rudolf, Norbert Rieber, Peter Bassler
  • Publication number: 20050031535
    Abstract: Process for the preparation of a crystalline solid comprising at least one zeolitic material, in which the solid is crystallized from at least one precursor compound and the reaction discharge of the crystallization is fed directly to a drying stage.
    Type: Application
    Filed: August 30, 2004
    Publication date: February 10, 2005
    Applicant: BASF Akiengesellschaft
    Inventors: Ulrich Mueller, Friedrich Hill, Norbert Rieber
  • Patent number: 6849162
    Abstract: A process for the preparation of propylene oxide in the presence of methanol, in which propylene oxide is separated from a mixture propylene oxide and methanol, and the resultant methanol containing mixture is worked up, including seperating methanol from a mixture comprising methanol and methyl formate during the work-up.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: February 1, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Joaquim Henrique Teles, Alwin Rehfinger, Peter Bassler, Anne Wenzel, Norbert Rieber, Peter Rudolf
  • Patent number: 6805851
    Abstract: Process for the preparation of a crystalline solid comprising at least one zeolitic material, in which the solid is crystallized from at least one precursor compound and the reaction discharge of the crystallization is fed directly to a drying stage.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: October 19, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Müller, Friedrich Hill, Norbert Rieber
  • Patent number: 6802882
    Abstract: The use of inorganic or organic polyacids for the treatment of inorganic fertilizers, in particular the use of the polyacids as a mixture with at least one nitrification inhibitor for the treatment of inorganic fertilizers; the use of selected pyrazole derivatives as nitrification inhibitor in inorganic fertilizers and also as stabilizers of liquid manure or liquid fertilizer formulations, as well as the corresponding treated inorganic fertilizers per se; and novel pyrazole derivatives which can be used as nitrification inhibitors in inorganic fertilizers and also as stabilizers of liquid manure or liquid fertilizer formulations are described.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: October 12, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Barth, Norbert Rieber, Randall Evan Gold, Jürgen Dressel, Klaus Erhardt, Klaus Horchler von Locquengh, Edgar Leibold, Stefan Rittinger
  • Publication number: 20040192945
    Abstract: A process for preparing propylene oxide comprises at least the following steps:
    Type: Application
    Filed: January 20, 2004
    Publication date: September 30, 2004
    Inventors: Joaquim Henrique Teles, Alwin Rehfinger, Anne Berg, Peter Rudolf, Norbert Rieber, Peter Bassler
  • Patent number: 6790969
    Abstract: A process for regenerating a zeolite catalyst comprises thermal treatment of the catalyst at above 120° C. in the presence of a gas stream comprising hydrogen.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: September 14, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Müller, Joaquim Henrique Teles, Anne Wenzel, Wolfgang Harder, Peter Rudolf, Alwin Rehfinger, Peter Ba&bgr;ler, Norbert Rieber
  • Publication number: 20040152583
    Abstract: A process for regenerating a zeolite catalyst comprises the following stages:
    Type: Application
    Filed: January 22, 2004
    Publication date: August 5, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Georg Heinrich Grosch, Ulrich Mueller, Andreas Walch, Norbert Rieber, Wolfgang Harder
  • Patent number: 6756503
    Abstract: A process for the preparation of propylene oxide in which (i) propene is reacted with hydrogen peroxide in the presence of methanol to give propylene oxide, giving a mixture (Gi) comprising propylene oxide, methanol, water and unreacted hydrogen peroxide, (ii) a mixture (Gii) comprising methanol, water and hydrogen peroxide is separated off from the mixture (Gi), giving a mixture (Ga) comprising propylene oxide, and (iii) water is separated off from the mixture (Gii), giving a mixture (Giii) comprising methanol and methyl formate.
    Type: Grant
    Filed: January 2, 2003
    Date of Patent: June 29, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Joaquim Henrique Teles, Alwin Rehfinger, Peter Bassler, Anne Wenzel, Norbert Rieber, Peter Rudolf
  • Patent number: 6740616
    Abstract: A process for preparing glycol monoethers from olefins comprises reacting the olefins with an epoxidizing reagent in the simultaneous presence of hydroxyl-containing organic compounds over a mixture of epoxidation catalysts and alkoxylation catalysts.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: May 25, 2004
    Assignee: Oxeno Olefinchemie GmbH
    Inventors: Ulrich Müller, Georg Heinrich Grosch, Andreas Walch, Norbert Rieber
  • Patent number: 6727371
    Abstract: In a continuous process for reacting an organic compound with hydroperoxide in the presence of a catalyst, the reaction is carried out in a reactor assembly comprising at least two reactors connected in parallel.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: April 27, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Müller, Joaquim Henrique Teles, Norbert Rieber, Andreas Walch, Peter Bassler, Alwin Rehfinger, Anne Wenzel, Wolfgang Harder
  • Publication number: 20040068128
    Abstract: An organic compound having at least one C—C double bond is epoxidized by means of hydrogen peroxide in the presence of at least one catalytically active compound and at least one solvent, wherein a product mixture comprising &agr;-hydroperoxyalcohols is reduced using at least one reducing agent.
    Type: Application
    Filed: August 7, 2003
    Publication date: April 8, 2004
    Inventors: Joaquim Henrique Teles, Alwin Rehfinger, Anne Berg, Peter Rudolf, Norbert Rieber, Peter Bassler
  • Patent number: 6712942
    Abstract: A mixture (M1) comprising an alkene and oxygen is worked up by a process in which (i) oxygen is removed from the mixture (M1) by a nondistillative method to give a mixture (M2) and (ii) the alkene is separated off from the mixture (M2) by distillation.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: March 30, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Joaquim Henrique Teles, Alwin Rehfinger, Peter Bassler, Norbert Rieber, Werner Hefner, Anne Wenzel, Peter Rudolf
  • Patent number: 6710002
    Abstract: A process for regenerating a zeolite catalyst comprises the following stages: (I) Heating a partially or completely deactivated catalyst to 250-600° C. in an atmosphere which contains less than 2% by volume of oxygen, (II) treating the catalyst at from 250 to 800° C., preferably from 350 to 600° C., with a gas stream which contains from 0.1 to 4% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof, and (III) treating the catalyst at from 250 to 800° C., preferably from 350 to 600° C., with a gas stream which contains from more than 4 to 100% by volume of an oxygen-donating substance or of oxygen or of a mixture of two or more thereof.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: March 23, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Heinrich Grosch, Ulrich Mueller, Andreas Walch, Norbert Rieber, Wolfgang Harder
  • Patent number: 6673950
    Abstract: In a process for reacting an organic compound with a hydroperoxide using at least one heterogeneous catalyst, both the pH and the temperate of the reaction medium are changed during the reaction
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: January 6, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Joaquim Henrique Teles, Alwin Rehfinger, Peter Bassler, Norbert Rieber, Anne Wenzel, Andreas Walch, Wolfgang Harder