Patents by Inventor Ulrich Wietelmann

Ulrich Wietelmann 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).

  • Publication number: 20240059576
    Abstract: The invention relates to a process for the production of pure lithium oxide and its use, wherein lithium carbonate is reacted with finely divided, elemental carbon in powder form in the temperature range between 600 and 1200° C., wherein the two reactants are intensively premixed prior to the thermolysis process so that the bulk density of the mixture is reduced by at least 5%, preferably by at least 15%.
    Type: Application
    Filed: January 3, 2022
    Publication date: February 22, 2024
    Inventors: Ulrich WIETELMANN, Ahmet KARACA, Johannes KLÖSENER, Mary SCHÄDER, Holger SCHWERIN, Henrike REMPEL, Katrin WESSELS, Rolf SANDERS, Alexander HÜBNER
  • Publication number: 20230220555
    Abstract: The invention relates to a process for the production of lithium metal and lithium alloy mouldings, wherein solutions of metallic lithium in ammonia having the composition Li(NH3)4+n and n=0-10 are brought into contact with metallic or electronically conductive deposition substrates and the ammonia is removed at temperatures of ?100 to 100° C. by overflowing with inert gas or at pressures of 0.001 to 700 mbar, so that the remaining lithium is deposited on the deposition substrate or/and it is doped with lithium or alloyed by it.
    Type: Application
    Filed: June 3, 2021
    Publication date: July 13, 2023
    Inventors: Ulrich Wietelmann, Dirk Dawidowski
  • Patent number: 11407769
    Abstract: The invention relates to methods for CC bond formation using organolithium compounds under continuous flow conditions in a micro or mesoreactor system, wherein an organic substrate is reacted with an alkyl lithium compound in the presence of a donor solvent to form a Li intermediate, which can be reacted in situ or subsequently in a second reaction step with an electrophile to form an organic secondary product, the organolithium compound RLi being used as a solution in a hydrocarbon or hydrocarbon mixture and the RLi concentration being at least 3 M, preferably at least 4 M.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: August 9, 2022
    Assignee: Albemarle Germany GmbH
    Inventors: Stefan Schnippering, Ulrich Wietelmann, Nikzad Nikbin, Gary John Tarver
  • Patent number: 11292804
    Abstract: The invention relates to powdery, highly reactive alkali and alkaline earth hydride compounds, and to mixtures with elements of the third main group of the periodic table of elements (PTE) and to the preparation thereof by reacting alkali or alkaline earth metals in the presence of finely dispersed metals or compounds of the third main group of the PTE, wherein the latter have one or more hydride ligands or said hydride ligands are converted in situ, under the prevailing reaction conditions, i.e., in the presence of hydrogen gas or another H source, into hydride species, and to the use thereof for the preparation of complex hydrides and organometallic compounds.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: April 5, 2022
    Assignee: ALBEMARLE CORPORATION
    Inventors: Ulrich Wietelmann, Christopher Kurth, Peter Rittmeyer, Stefan Scherer, Armin Stoll, Uwe Lischka
  • Patent number: 11230519
    Abstract: One or more concentrated low-viscosity solutions of alkaline earth alkoxide compounds M(OCH2R6)2-a-b(OR7)a[O(CHR8)nOR9]b in mixture with a metal alkyl compound M(R10R11) in an aprotic solvent and related methods are disclosed herein.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: January 25, 2022
    Inventors: Ulrich Wietelmann, Ute Emmel, Armin Stoll, Florian Kiefer
  • Publication number: 20210371435
    Abstract: The object of the invention are solutions of alkali metal amides MNR1R2, wherein M is an alkali metal selected from Li, Na, K, Rb, Cs; R1 and R2 independently of one another are linear, branched or cyclic alkyl groups having 1 to 8 C atoms or together are a cycloalkyl radical, the alkali metal amides being present in methyltetrahydropyran or in a solvent mixture containing methyltetrahydropyran, and processes for their preparation.
    Type: Application
    Filed: June 28, 2019
    Publication date: December 2, 2021
    Inventors: Dirk DAWIDOWSKI, Annika HÖRBERG, Uwe LISCHKA, Theresa SCHMIDT, Johannes KLÖSENER, Ulrich WIETELMANN, Peter RITTMEYER, Stefan SCHNIPPERING
  • Patent number: 11180377
    Abstract: A method for the production of lithium oxide and the use of such lithium oxide is described herein. The method includes reacting lithium carbonate with elemental carbon or a carbon source forming elemental carbon under certain reaction conditions. The reaction may be carried out in containers whose product-contacting surfaces are corrosion resistant to the reactants and products. The lithium oxide obtained according to the method described herein can used for the production of pure lithium hydroxide solutions or for the production of glasses glass ceramics or crystalline ceramics, for example, lithium ion conductive ceramics.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: November 23, 2021
    Assignee: ALBEMARLE GERMANY GmbH
    Inventors: Rainer Dietz, Johannes Willems, Dieter Hauk, Ulrich Wietelmann
  • Publication number: 20210320296
    Abstract: The invention relates to a method for producing a rechargeable high-energy battery with an anion-redox-active composite cathode containing lithium hydroxide as the electrochemically active component, which is mixed and contacted with electroconically or mixed-conductive transition metals and/or transition metal oxides, so that an electronically or mixed-conductive network is formed, this mixture is applied to a current drain, and the composite cathode thus formed is placed in a cell housing together with a separator, a lithium-conductive electrolyte and a lithium-containing anode, so that an electrochemical cell is present and is subjected to at least one initial forming cycle.
    Type: Application
    Filed: September 5, 2019
    Publication date: October 14, 2021
    Inventor: Ulrich Wietelmann
  • Publication number: 20210320291
    Abstract: The invention relates to a rechargeable lithium battery comprising a composite anode (negative electrode) containing a metal nitrogen compound as the electrochemically active component in the composite anode, according to the general formulas (I) and/or (II) LixM2z(NH)0.
    Type: Application
    Filed: September 5, 2019
    Publication date: October 14, 2021
    Inventor: Ulrich Wietelmann
  • Patent number: 11145910
    Abstract: Rechargeable, non-aqueous lithium batteries which contain, as active anode material, either lithium metal or a lithium alloy, an active cathode material with a redox potential in the range of between 1.5 and 3.4 V vs Li/Li+ and lithium rhodanide (LiSCN) as electrolyte component. One or more related methods for providing overcharge protection are also described herein.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: October 12, 2021
    Assignee: Albemarle Germany GmbH
    Inventors: Ulrich Wietelmann, Ute Emmel, Irina Wolf, Margret Wohlfahrt-Mehrens, Serife Kaymaksiz Tost, Florian Wilhelm, Mario Wachtler
  • Patent number: 11021797
    Abstract: The invention relates to a stabilized lithium metal powder and to a method for producing the same, the stabilized, pure lithium metal powder having been passivated in an organic inert solvent under dispersal conditions with fatty acids or fatty acid esters according to the general formula (I) R—COOR?, in which R stands for C10-C29 groups and R? for H or C1-C8 groups.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: June 1, 2021
    Assignee: Albemarle Germany GmbH
    Inventor: Ulrich Wietelmann
  • Patent number: 11018334
    Abstract: The invention relates to particulate lithium metal composite materials, stabilized by alloy-forming elements of the third and fourth primary group of the PSE and method for production thereof by reaction of lithium metal with film-forming element precursors of the general formulas (I) or (II): [AR1R2R3R4]Lix (I), or R1R2R3A-O-AR4R5R6 (II), wherein R1R2R3R4R5R6=alkyl (C1-C12), aryl, alkoxy, aryloxy-, or halogen (F, Cl, Br, I), independently of each other; or two groups R represent together a 1,2-diolate (1,2-ethandiolate, for example), a 1,2- or 1,3-dicarboxylate (oxalate or malonate, for example) or a 2-hydroxycarboxylate dianion (lactate or salicylate, for example); the groups R1 to R6 can comprise additional functional groups, such as alkoxy groups; A=boron, aluminum, gallium, indium, thallium, silicon, germanium, tin, lead; x=0 or 1 for B, Al, Ga, In, Tl; x=0 for Si, Ge, Sn, Pb; in the case that x=0 and A=B, Al, Ga, In, Tl, R4 is omitted, or with polymers comprising one or more of the elements B, Al, Ga, I
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: May 25, 2021
    Assignee: Albemarle Germany GmbH
    Inventors: Ulrich Wietelmann, Christoph Hartnig, Ute Emmel
  • Publication number: 20210040124
    Abstract: The invention relates to methods for CC bond formation using organolithium compounds under continuous flow conditions in a micro or mesoreactor system, wherein an organic substrate is reacted with an alkyl lithium compound in the presence of a donor solvent to form a Li intermediate, which can be reacted in situ or subsequently in a second reaction step with an electrophile to form an organic secondary product, the organolithium compound RLi being used as a solution in a hydrocarbon or hydrocarbon mixture and the RLi concentration being at least 3 M, preferably at least 4 M.
    Type: Application
    Filed: November 13, 2018
    Publication date: February 11, 2021
    Inventors: Stefan Schnippering, Ulrich Wietelmann, Nikzad Nikbin, Gary John Tarver
  • Publication number: 20200240020
    Abstract: The invention relates to a stabilized lithium metal powder and to a method for producing the same, the stabilized, pure lithium metal powder having been passivated in an organic inert solvent under dispersal conditions with fatty acids or fatty acid esters according to the general formula (I) R—COOR?, in which R stands for C10-C29 groups and R? for H or C1-C8 groups.
    Type: Application
    Filed: April 14, 2020
    Publication date: July 30, 2020
    Inventor: Ulrich WIETELMANN
  • Patent number: 10655229
    Abstract: The invention relates to a stabilized lithium metal powder and to a method for producing the same, the stabilized, pure lithium metal powder having been passivated in an organic inert solvent under dispersal conditions with fatty acids or fatty acid esters according to the general formula (I) R—COOR?, in which R stands for C10-C29 groups and R? for H or C1-C8 groups.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: May 19, 2020
    Assignee: Albemarle Germany GmbH
    Inventor: Ulrich Wietelmann
  • Patent number: 10640519
    Abstract: This invention provides a method for producing organometallic compounds RnM (M=alkali or alkaline earth element, R=alkyl residue) where n=valence of the metal M- and R=alkyl residue with 2 to 18 C atoms. In the method of this invention, an olefin is hydrometalated in an alkyl methyl ether, or in a solvent mixture containing an alkyl methyl ether, by means of the metal M and in the presence of a hydrogen source and in the presence of a transition metal catalyst, wherein the molar ratio between alkyl methyl ether and metal M is at least 0.01:1 and at most 50:1.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: May 5, 2020
    Inventors: Ulrich Wietelmann, Christopher Kurth, Stefan Scherer, Peter Rittmeyer, Armin Stoll
  • Publication number: 20200123086
    Abstract: One or more concentrated low-viscosity solutions of alkaline earth alkoxide compounds M(OCH2R6)2-a-b(OR7)a[O(CHR8)nOR9]b in mixture with a metal alkyl compound M(R10R11) in an aprotic solvent and related methods are disclosed herein.
    Type: Application
    Filed: December 17, 2019
    Publication date: April 23, 2020
    Inventors: Ulrich WIETELMANN, Ute EMMEL, Armin STOLL, Florian KIEFER
  • Publication number: 20200052347
    Abstract: Rechargeable, non-aqueous lithium batteries which contain, as active anode material, either lithium metal or a lithium alloy, an active cathode material with a redox potential in the range of between 1.5 and 3.4 V vs Li/Li+ and lithium rhodanide (LiSCN) as electrolyte component. One or more related methods for providing overcharge protection are also described herein.
    Type: Application
    Filed: October 18, 2019
    Publication date: February 13, 2020
    Inventors: Ulrich Wietelmann, Ute Emmel, Irina Wolf, Margret Wohlfahrt-Mehrens, Serife Kaymaksiz Tost, Florian Wilhelm, Mario Wachtler
  • Publication number: 20200040012
    Abstract: The invention relates to powdery, highly reactive alkali and alkaline earth hydride compounds, and to mixtures with elements of the third main group of the periodic table of elements (PTE) and to the preparation thereof by reacting alkali or alkaline earth metals in the presence of finely dispersed metals or compounds of the third main group of the PTE, wherein the latter have one or more hydride ligands or said hydride ligands are converted in situ, under the prevailing reaction conditions, i.e., in the presence of hydrogen gas or another H source, into hydride species, and to the use thereof for the preparation of complex hydrides and organometallic compounds.
    Type: Application
    Filed: October 14, 2019
    Publication date: February 6, 2020
    Inventors: Ulrich Wietelmann, Christopher Kurth, Peter Rittmeyer, Stefan Scherer, Armin Stoll, Uwe Lischka
  • Patent number: 10544074
    Abstract: One or more concentrated low-viscosity solutions of alkaline earth alkoxide compounds M(OCH2R6)2-a-b(OR7)a[O(CHR8)nOR9]b in mixture with a metal alkyl compound M(R10R11) in an aprotic solvent and related methods are disclosed herein.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: January 28, 2020
    Assignee: Albemarle Germany GmbH
    Inventors: Ulrich Wietelmann, Ute Emmel, Armin Stoll, Florian Kiefer