Patents by Inventor Andreas Hoff

Andreas Hoff 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).

  • Nuclear reactor green and sintered fuel pellets, corresponding fuel rod and fuel assembly
    Patent number: 9042507
    Abstract: A sintered fuel pellet for a water nuclear reactor fuel rod including a peripheral wall extending along a central axis and two end faces. At least one of the end faces includes at least a first chamfer extending from the peripheral wall towards the central axis with a first non-zero slope with respect to a plane perpendicular to the central axis and a second chamfer extending from the first chamfer towards the central axis with a second non-zero slope with respect to a plane perpendicular to the central axis, wherein the first slope is different from the second slope.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: May 26, 2015
    Assignee: AREVA NP
    Inventors: Wolfgang Doerr, Andreas Hoff, William Jentzen, Dave Curran, Alain Chotard, Pascal Deydier
  • Hydrolysis of the residues obtained in the production of isophorone to recover isophorone and acetone
    Patent number: 9035102
    Abstract: A process for preparing isophorone (3,5,5-trimethyl-2-cyclohexen-1-one) is provided wherein distillation vapors from the work-up of product fractions are recycled to earlier stages of operation of the process.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: May 19, 2015
    Assignee: Evonik Industries AG
    Inventors: Joerg-Joachim Nitz, Stephan Kohlstruk, Robert Jansen, Matthias Orschel, Andreas Merkel, Michael Demming, Matthias Mendorf, Jens Doering, Axel Hengstermann, Andreas Hoff, Anja Mueller
  • HYDROLYSIS OF THE RESIDUES OBTAINED IN THE PRODUCTION OF ISOPHORONE TO RECOVER ISOPHORONE AND ACETONE
    Publication number: 20150045585
    Abstract: A process for preparing isophorone (3,5,5-trimethyl-2-cyclohexen-1-one) is provided wherein distillation vapors from the work-up of product fractions are recycled to earlier stages of operation of the process.
    Type: Application
    Filed: August 8, 2014
    Publication date: February 12, 2015
    Applicant: Evonik Industries AG
    Inventors: Joerg-Joachim NITZ, Stephan KOHLSTRUK, Robert JANSEN, Matthias ORSCHEL, Andreas MERKEL, Michael DEMMING, Matthias MENDORF, Jens DOERING, Axel HENGSTERMANN, Andreas HOFF, Anja MUELLER
  • NUCLEAR REACTOR GREEN AND SINTERED FUEL PELLETS, CORRESPONDING FUEL ROD AND FUEL ASSEMBLY
    Publication number: 20110176650
    Abstract: A sintered fuel pellet for a water nuclear reactor fuel rod including a peripheral wall extending along a central axis and two end faces. At least one of the end faces includes at least a first chamfer extending from the peripheral wall towards the central axis with a first non-zero slope with respect to a plane perpendicular to the central axis and a second chamfer extending from the first chamfer towards the central axis with a second non-zero slope with respect to a plane perpendicular to the central axis, wherein the first slope is different from the second slope.
    Type: Application
    Filed: September 29, 2009
    Publication date: July 21, 2011
    Applicant: AREVA NP
    Inventors: Wolfgang Doerr, Andreas Hoff, William Jentzen, Dave Curran, Alain Chotard, Pascal Deydier
  • USE OF IONIC LIQUIDS FOR THE LUBRICATION OF COMPONENTS IN WIND POWER PLANTS
    Publication number: 20090036334
    Abstract: The invention relates to the use of lubricants containing at least one ionic liquid as lubricants in components of a wind power plant.
    Type: Application
    Filed: August 1, 2008
    Publication date: February 5, 2009
    Inventors: Peter Schwab, Stefan Kempka, Rene Hansel, Andreas Hoff, Axel Kobus
  • Method for the separation of monomers from a composition containing a monomer
    Publication number: 20070004903
    Abstract: The present invention concerns a process for separation of a monomer including at least one double bond, hereafter referred to as “monomer,” in particular (meth)acrylic acid, from a composition Z including this monomer and at least one impurity different to the monomer, including the steps of bringing into contact of the composition Z with an additive by forming a separation phase. The additive has a melting point of at most about 150° C. and a vapour pressure at a temperature of 20° C. of at most about 1 mbar. The monomer is then separated from the separation phase. A device for producing a monomer, the use of additives in the separation of a monomer from a monomer-comprising composition, the monomer obtainable by the process according to the invention, chemical products comprising the monomer as well as the use of the monomer in or for production of chemical products.
    Type: Application
    Filed: March 26, 2004
    Publication date: January 4, 2007
    Inventors: Andreas Hoff, Axel Kobus, Dennis Thong, Ralf Goedecke, Martin Roos, Torsten Balduf