Patents by Inventor René Lindenau

René Lindenau 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: 11572272
    Abstract: A process for producing a hydrogen storage means. Separate layers comprising a hydrogen-storing material and a heat-conducting material are introduced into a press mold. The separate layers of the hydrogen-storing material and the heat-conducting material are compressed together to generate a sandwich structure. The heat-conducting material, on use of the sandwich structure as hydrogen storage means, assumes the task of conducting heat.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: February 7, 2023
    Assignee: GKN Sinter Metals Engineering GmbH
    Inventors: Antonio Casellas, Klaus Dollmeier, Eberhard Ernst, René Lindenau, Anastasia Özkan, Lars Wimbert
  • Publication number: 20200062589
    Abstract: A process for producing a hydrogen storage means. Separate layers comprising a hydrogen-storing material and a heat-conducting material are introduced into a press mold. The separate layers of the hydrogen-storing material and the heat-conducting material are compressed together to generate a sandwich structure. The heat-conducting material, on use of the sandwich structure as hydrogen storage means, assumes the task of conducting heat.
    Type: Application
    Filed: November 4, 2019
    Publication date: February 27, 2020
    Inventors: Antonio Casellas, Klaus Dollmeier, Eberhard Ernst, René Lindenau, Anastasia Özkan, Lars Wimbert
  • Publication number: 20170044011
    Abstract: The hydrogen storage element for a hydrogen store comprises a pressed article having a hydrogen-storing first material and having a thermally conductive second material, wherein the second material is in thermal contact with the hydrogen-storing first material and has, in some regions, a different three-dimensional distribution within the pressed article.
    Type: Application
    Filed: May 4, 2015
    Publication date: February 16, 2017
    Inventors: Antonio CASELLAS, Klaus DOLLMEIER, Eberhard ERNST, Rene LINDENAU, Anastasia OZKAN, Lars WIMBERT
  • Publication number: 20160222310
    Abstract: The present invention concerns a compacting auxiliary for powder metallurgy and a sinterable mixture which contains the compacting auxiliary.
    Type: Application
    Filed: December 15, 2015
    Publication date: August 4, 2016
    Inventors: René Lindenau, Christopher Schade
  • Patent number: 8658054
    Abstract: In order to achieve the object of providing a mixture by means of which, in particular, sintered moldings can be obtained that are virtually free of surface stains produced by soot particles, a mixture is proposed which comprises at least one pressing aid and at least one additive, wherein the additive is selected from a group of substances which have releasable carbon dioxide.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: February 25, 2014
    Assignee: GKN Sinter Metals Holding GmbH
    Inventors: Rene Lindenau, Lars Wimbert
  • Publication number: 20120031233
    Abstract: A lubricant for use in a powder mixture is disclosed. This lubricant contains carnauba wax and at least one plant- or animal-based fat. A powder mixture using this lubricant can be used to compact green parts have higher densities and helps to improve the life of the tools compacting the powder.
    Type: Application
    Filed: September 14, 2011
    Publication date: February 9, 2012
    Inventors: René Lindenau, Lars Wimbert
  • Publication number: 20120001129
    Abstract: In order to achieve the object of providing a mixture by means of which, in particular, sintered moldings can be obtained that are virtually free of surface stains produced by soot particles, a mixture is proposed which comprises at least one pressing aid and at least one additive, wherein the additive is selected from a group of substances which have releasable carbon dioxide.
    Type: Application
    Filed: July 12, 2011
    Publication date: January 5, 2012
    Applicant: GKN SINTER METALS HOLDING GMBH
    Inventors: Rene Lindenau, Lars Wimbert
  • Patent number: 7857903
    Abstract: To achieve the object of providing a mixture for producing sinterable mouldings that allows high pressed densities to be obtained in a green compact, a mixture is proposed which comprises at least one metallic material and/or plastics material and at least one pressing aid, the pressing aid comprising about 0.5% to about 60% by weight, based on the total amount of the pressing aid, of at least one amide, and about 40% to about 99.5% by weight, based on the total amount of the pressing aid, of at least one carnauba wax.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: December 28, 2010
    Assignee: GKN Sinter Metals Holding GmbH
    Inventors: Rene Lindenau, Diego Fax, Lars Wimbert
  • Publication number: 20090217843
    Abstract: To achieve the object of providing a mixture for producing sinterable mouldings that allows high pressed densities to be obtained in a green compact, a mixture is proposed which comprises at least one metallic material and/or plastics material and at least one pressing aid, the pressing aid comprising about 0.5% to about 60% by weight, based on the total amount of the pressing aid, of at least one amide, and about 40% to about 99.5% by weight, based on the total amount of the pressing aid, of at least one carnauba wax.
    Type: Application
    Filed: March 6, 2009
    Publication date: September 3, 2009
    Applicant: GKN SINTER METALS HOLDING GMBH
    Inventors: Rene Lindenau, Diego Fax, Lars Wimbert
  • Patent number: 7524352
    Abstract: Certain preferred embodiments of the present invention relate to compositions for the production of sintered molded parts, components/parts produced therefrom, and methods for preparing such compositions. In accordance with certain embodiments, compositions for production of sintered molded parts comprise a metal-based, a ceramic-based, and/or a polymer-based powder, and a compaction aid, having 25 to 60 weight percent of a polyglycol, based on the total weight of the compaction aid, and 40 to 75 weight percent of a montan wax, based on the total weight of the compaction aid. The compaction aid may be present in an amount from about 0.1 to 5 weight percent, preferably 0.5 to 1.5 weight percent, based on the total weight of the composition. The composition may also include a lubricant such as, for example, MoS2, WS2, BN, MnS, and/or carbon.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: April 28, 2009
    Assignee: GKNM Sinter Metals GmbH
    Inventors: Rene Lindenau, Klaus Dollmeier, Volker Arnhold
  • Publication number: 20050226760
    Abstract: Certain preferred embodiments of the present invention relate to compositions for the production of sintered molded parts, components/parts produced therefrom, and methods for preparing such compositions. In accordance with certain embodiments, compositions for production of sintered molded parts comprise a metal-based, a ceramic-based, and/or a polymer-based powder, and a compaction aid, having 25 to 60 weight percent of a polyglycol, based on the total weight of the compaction aid, and 40 to 75 weight percent of a montan wax, based on the total weight of the compaction aid. The compaction aid may be present in an amount from about 0.1 to 5 weight percent, preferably 0.5 to 1.5 weight percent, based on the total weight of the composition. The composition may also include a lubricant such as, for example, MoS2, WS2, BN, MnS, and/or carbon.
    Type: Application
    Filed: March 24, 2005
    Publication date: October 13, 2005
    Inventors: Rene Lindenau, Klaus Dollmeier, Volker Arnhold
  • Publication number: 20050034559
    Abstract: The present invention relates to sinterable powder compositions, sintered components produced therefrom, and methods for prepared such components. Sinterable powder compositions are composed of an aluminum-based powder, and a first metal powder comprising molybdenum and/or tungsten. The aluminum based powder is composed of aluminum and magnesium, silicon, copper, zinc, titanium, tin, manganese, nickel, or combinations thereof. In another embodiment, the sinterable powder composition includes a second metal powder comprising copper, tin, zinc, lithium, magnesium, or combination thereof. The sinterable powder compositions may be used for the production of sintered components, including composite components, having not only sufficient strength values but also with high hardness.
    Type: Application
    Filed: July 29, 2004
    Publication date: February 17, 2005
    Inventors: Rene Lindenau, Klaus Dollmeier, Volker Arnhold
  • Publication number: 20050036899
    Abstract: The present invention relates to sintered components and methods for preparing sintered components, which include the steps of introducing a sinterable material into a first mold, pressing the sinterable material to form a green compact; partially post-compressing the green compact in a second press mold, and, sintering the green compact. The density of the post-compressed green compact is greater than the density prior to compression.
    Type: Application
    Filed: July 29, 2004
    Publication date: February 17, 2005
    Inventors: Rene Lindenau, Klaus Dollmeier, Volker Arnhold
  • Patent number: 6224823
    Abstract: The invention relates to a process for producing sinterable metallic shaped parts from a metal powder, which is mixed with an auxiliary compacting agent containing at least in part components from the polyalkylene glycol family, is filled into a compacting mold and, following the compacting under pressure, is ejected from the mold as compacted shaped part.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: May 1, 2001
    Assignee: GKN Sinter Metals GmbH & Co. KG
    Inventors: René Lindenau, Klaus Dollmeier, Wieland Kynast, Jens Wahnschaffe