Patents by Inventor Genovefa Wendrich

Genovefa Wendrich 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: 10312506
    Abstract: A process for the preparation of carbon-coated lithium transition metal phosphate having the formula Li0.9+xMyMn1?yPO4 and its use as cathode material in secondary lithium-ion batteries wherein the process includes few synthesis steps which can be conducted easily, therefore providing a low cost process and results in a complete reaction of the starting material compounds or the mixtures thereof. At least one starting material compound is dispersed or dissolved in an essentially aqueous medium and heated to a temperature between 50° C. and 100° C. prior to addition of the remaining starting material compounds.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: June 4, 2019
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Nicolas Tran, Genovefa Wendrich
  • Publication number: 20170069908
    Abstract: A process for the preparation of carbon-coated lithium transition metal phosphate having the formula Li0.9+xMyMn1?yPO4 and its use as cathode material in secondary lithium-ion batteries wherein the process includes few synthesis steps which can be conducted easily, therefore providing a low cost process and results in a complete reaction of the starting material compounds or the mixtures thereof. At least one starting material compound is dispersed or dissolved in an essentially aqueous medium and heated to a temperature between 50° C. and 100° C. prior to addition of the remaining starting material compounds.
    Type: Application
    Filed: May 6, 2015
    Publication date: March 9, 2017
    Inventors: Nicolas TRAN, Genovefa WENDRICH
  • Publication number: 20140312269
    Abstract: The present invention relates to a doped lithium titanium spinel with formula I Li4?yK?yTi5?zK?zO12?xAx (I), wherein A is on or more anions selected from the group is consisting I, N, Br, Cl, F, K?, K? are each one or more cations selected from the group consisting of Na, K, Cd, Se, Te, S, Sb, As, P, Pb, Bi, Hg, Si, C and 0?x, y, z?0.4. Further, the present invention relates to an electrode comprising a layer of such lithium titanium spinel and a secondary non-aqueous electrolyte battery with such an electrode.
    Type: Application
    Filed: November 15, 2012
    Publication date: October 23, 2014
    Applicant: CLARIANT INTERNATIONAL, LTD.
    Inventors: Andreas Laumann, Michael Holzapfel, Genovefa Wendrich
  • Publication number: 20120328950
    Abstract: The present invention relates to a process for the preparation of a mixture for producing lithium titanium spinel Li4Ti5O12, having the step of mixing Li2CO3 and TiO2 in a vessel (1) in which at least one oblong element (2) with a first end (2a) and a second end (2b) is arranged such that the first end (2a) points towards an inner wall (1a) of the vessel (1) and is at a distance d from same, wherein the mixing step is carried out by allowing the vessel (1) to rotate and holding the oblong element (2) in its position, with the result that a relative movement takes place between the inner wall (1a) of the vessel (1) and the first end (2a) of the oblong element (2), wherein the distance d is kept constant during mixing. In addition, the invention relates to a process for the preparation of lithium titanium spinel Li4Ti5O12 from a thus-obtained mixture and its use as anode material in rechargeable lithium-ion batteries.
    Type: Application
    Filed: September 28, 2010
    Publication date: December 27, 2012
    Applicant: Sud-Chemie AG
    Inventors: Stefanie Busl, Genovefa Wendrich, Jasmin Dollinger, Michael Holzapfel, Nicolas Tran
  • Publication number: 20120295168
    Abstract: The present invention relates to a method for producing lithium aluminium titanium phosphates of the general formula Li1+xTi2?xAlx(PO4)3, wherein x is ?0.4, as well as their use as solid electrolytes in secondary lithium ion batteries.
    Type: Application
    Filed: October 13, 2010
    Publication date: November 22, 2012
    Applicant: SUD-CHEMIE AG
    Inventors: Michael Holzapfel, Genovefa Wendrich, Stefanie Busl, Gerhard Nuspl
  • Publication number: 20090044921
    Abstract: A method for binding impurities in paper production, comprising the following steps: a) provision of a bentonite, the proportion of the monovalent cations, based on the cation exchange capacity (CEC) of the bentonite, being at least 0.7 and the CEC being more than 85 meq/100 g, preferably more than 90 meq/100 g, in particular more than 95 meq/100 g; b) addition of the bentonite according to a) to a paper pulp or fiber suspension; c) binding of the impurities to the bentonite in the pulp or fiber suspension is described.
    Type: Application
    Filed: November 30, 2005
    Publication date: February 19, 2009
    Inventors: Ulrich Sohling, Hubertus Besting, Genovefa Wendrich