Patents by Inventor Holger Wirsing

Holger Wirsing 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: 9809498
    Abstract: A refractory, coarse ceramic product including at least one granular refractory material, has an open porosity of between 22 and 45 vol.-%, in particular of between 23 and 29 vol.-%, and a grain structure of the refractory material, wherein the medium grain size fraction with grain sizes of between 0.1 and 0.5 mm is 10 to 55 wt.-%, in particular 35 to 50 wt.-%, and wherein the remainder of the grain structure is a finest grain fraction with grain sizes of up to 0.1 mm and/or coarse-grain fraction with grain sizes of more than 0.5 mm.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: November 7, 2017
    Assignee: Refratechnik Holding GmbH
    Inventors: Hans-Juergen Klischat, Carsten Vellmer, Holger Wirsing
  • Publication number: 20160304403
    Abstract: A refractory, coarse ceramic product including at least one granular refractory material, has an open porosity of between 22 and 45 vol.-%, in particular of between 23 and 29 vol.-%, and a grain structure of the refractory material, wherein the medium grain size fraction with grain sizes of between 0.1 and 0.5 mm is 10 to 55 wt.-%, in particular 35 to 50 wt.-%, and wherein the remainder of the grain structure is a finest grain fraction with grain sizes of up to 0.1 mm and/or coarse-grain fraction with grain sizes of more than 0.5 mm.
    Type: Application
    Filed: October 21, 2014
    Publication date: October 20, 2016
    Applicant: Refratechnik Holding GmbH
    Inventors: Hans-Juergen KLISCHAT, Carsten VELLMER, Holger WIRSING
  • Patent number: 9382161
    Abstract: There is a process for creating graphite free non-fired refractory products, which are molded using presses and which includes using a plurality of different binders. The binders comprise a first binder for binding grains of granulation between room temperature and 400° C., a second binder binding the grains of granulation between 300 and 900° C.; and a third binder binding granulations of the refractory materials that enter into ceramic binding at temperatures above 900° C. This process is for producing at least one of magnesia chromite bricks, magnesia spinel and spinel bricks, magnesia zirconia and magnesia zircon bricks, magnesia hercynite and magnesia galaxite bricks, dolomite, dolomite-magnesia, and lime bricks, forsterite and olivine bricks, magnesia forsterite bricks, magnesia pleonast bricks, magnesia bricks.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: July 5, 2016
    Assignee: Refratechnik Holding GmbH
    Inventors: Bernd Scheubel, Helge Jansen, Hans-Jürgen Klischat, Rolf-Dieter Kizio, Holger Wirsing
  • Publication number: 20140261113
    Abstract: There is a process for creating graphite free non-fired refractory products, which are molded using presses and which includes using a plurality of different binders. The binders comprise a first binder for binding grains of granulation between room temperature and 400° C., a second binder binding the grains of granulation between 300 and 900° C.; and a third binder binding granulations of the refractory materials that enter into ceramic binding at temperatures above 900° C. This process is for producing at least one of magnesia chromite bricks, magnesia spinel and spinel bricks, magnesia zirconia and magnesia zircon bricks, magnesia hercynite and magnesia galaxite bricks, dolomite, dolomite-magnesia, and lime bricks, forsterite and olivine bricks, magnesia forsterite bricks, magnesia pleonast bricks, magnesia bricks.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 18, 2014
    Applicant: REFRATECHNIK HOLDING GMBH
    Inventors: Bernd SCHEUBEL, Helge JANSEN, Hans-Jürgen KLISCHAT, Rolf-Dieter KIZIO, Holger WIRSING
  • Patent number: 8030236
    Abstract: Disclosed are a fire-resistant ordinary ceramic batch and a fire-resistant product predominantly comprising a) at least one granular, fire-resistant, mineral, alkaline main component made of an MgO-based or MgO and CaO-based fire-resistant material that is based on at least one alkaline fire-resistant raw material, and b) at least one granular, fire-resistant, mineral, MgO-based, additional elasticator in the form of a forsterite material or a mixture forming forsterite material preferably as small molded articles, such as pellets or granulate that is comminuted from compacts. The small molded articles have a grain size ranging from 0.3 to 8 mm while being advantageously provided with a binder at an amount that elasticates the main component.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: October 4, 2011
    Assignee: Refratechnik Holding GmbH
    Inventors: Hans-Jürgen Klischat, Carsten Vellmer, Holger Wirsing
  • Publication number: 20090227441
    Abstract: The invention relates to a refractory batch and to a process for its production. The batch comprises a refractory metal oxide main component containing Al2O3; the refractory metal oxide main component containing 40 to 60% by weight of Al2O3; a phosphate bond, in particular, the phosphate bond being produced by at least one of a phosphoric acid and a monoaluminum phosphate; finely particulate SiC having a grain size of <0.2 mm, the batch containing 3 to 15% by weight of the finely particulate SiC; and the grain size distribution of the SiC being selected so that more than 2.0% of the SiC, based on a total quantity of the batch, is <0.045 mm, whereby said batch excludes the presence of boron phosphate.
    Type: Application
    Filed: May 12, 2009
    Publication date: September 10, 2009
    Inventors: Heinrich Liever, Hans-Jurgen Klischat, Holger Wirsing
  • Publication number: 20090227442
    Abstract: Disclosed are a fire-resistant ordinary ceramic batch and a fire-resistant product predominantly comprising a) at least one granular, fire-resistant, mineral, alkaline main component made of an MgO-based or MgO and CaO-based fire-resistant material that is based on at least one alkaline fire-resistant raw material, and b) at least one granular, fire-resistant, mineral, MgO-based, additional elasticator in the form of a forsterite material or a mixture forming forsterite material preferably as small molded articles such as pellets or granulate that is comminuted from compacts. The small molded articles have a grain size ranging from 0.3 to 8 mm while being advantageously provided with a binder at an amount that elasticates the main component.
    Type: Application
    Filed: February 6, 2007
    Publication date: September 10, 2009
    Inventors: Hans-Jürgen Klischat, Carsten Vellmer, Holger Wirsing
  • Publication number: 20080261799
    Abstract: The invention relates to a refractory batch and to a process for its production. The batch comprises a refractory metal oxide main component containing Al2O3; the refractory metal oxide main component containing 40 to 60% by weight of Al2O3; a phosphate bond, in particular, the phosphate bond being produced by at least one of a phosphoric acid and a monoaluminum phosphate; finely particulate SiC having a grain size of <0.2 mm, the batch containing 3 to 15% by weight of the finely particulate SiC; and the grain size distribution of the SiC being selected so that more than 2.0% of the SiC, based on a total quantity of the batch, is <0.045 mm, whereby said batch excludes the presence of boron phosphate.
    Type: Application
    Filed: December 5, 2007
    Publication date: October 23, 2008
    Inventors: Heinrich Liever, Hans-Jurgen Klischat, Holger Wirsing
  • Publication number: 20060014622
    Abstract: The invention relates to a refractory batch and to a process for its production. The batch comprises a refractory metal oxide main component containing Al2O3; the refractory metal oxide main component containing 40 to 60% by weight of Al2O3; a phosphate bond, in particular, the phosphate bond being produced by at least one of a phosphoric acid and a monoaluminum phosphate; finely particulate SiC having a grain size of <0.2 mm, the batch containing 3 to 15% by weight of the finely particulate SiC; and the grain size distribution of the SiC being selected so that more than 2.0% of the SiC, based on a total quantity of the batch, is <0.045 mm, whereby said batch excludes the presence of boron phosphate.
    Type: Application
    Filed: June 20, 2005
    Publication date: January 19, 2006
    Inventors: Heinrich Liever, Hans-Jurgen Klischat, Holger Wirsing
  • Patent number: 6887810
    Abstract: A material for refractory shaped bodies or compounds, the material being a pleonaste and/or a spinel of the pleonaste type. In addition to FeOx and Al2O3, the material also includes MgO. The ratio of the iron in the material is calculated as Fe2O3:Al2O3 and ranges from 30:70 to 60:40. The material contains from 20 to 60% by mass of MgO, as based on Fe2O3+Al2O3.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: May 3, 2005
    Assignee: Refratechnik Holdings GmbH
    Inventors: Peter Bartha, Hans-Jurgen Klischat, Holger Wirsing, Guido Weibel
  • Publication number: 20040220042
    Abstract: A material for refractory shaped bodies or compounds, the material being a pleonaste and/or a spinel of the pleonaste type. In addition to FeOx and A12O3, the material also includes MgO. The ratio of the iron in the material is calculated as Fe2O3:Al2O3 and ranges from 30:70 to 60:40. The material contains from 20 to 60% by mass of MgO, as based on Fe2O3+Al2O3.
    Type: Application
    Filed: May 26, 2004
    Publication date: November 4, 2004
    Applicant: Refratechnik Holding GmbH
    Inventors: Peter Bartha, Hans-Jurgen Klischat, Holger Wirsing, Guido Weibel
  • Publication number: 20040207132
    Abstract: A resistor,which is solidified from a melt, is provided for a refractory shaped body, and includes a refractory mineral metal-oxide main component having elasticizers of a general formula A2+B3+2O4 in an amount so that solubility of the main component for the elasticizer is exceeded with the elisticizers providing precipitation areas in the main component. The resistor is produced by a joint melting of the main component with oxides which form the elasticizers. A process is provided for the production of the resistor.
    Type: Application
    Filed: May 18, 2004
    Publication date: October 21, 2004
    Applicant: Refratechnik Holding GmbH
    Inventors: Peter Bartha, Hans-Jurgen Klischat, Holger Wirsing, Guido Weibel
  • Publication number: 20040204305
    Abstract: A batch, in particular for the production of refractory shaped bodies, includes a mixture of a refractory, metal oxide main component containing 40 to 60% by weight of Al2O3, a phosphate bond and finely particulate SiC having a grain size of <0.2 mm, and a process using the mixture for forming the batch to produce the refractory shaped bodies.
    Type: Application
    Filed: April 28, 2004
    Publication date: October 14, 2004
    Applicant: Refratechnik Holding GmbH
    Inventors: Heinrich Liever, Hans-Jurgen Klischat, Holger Wirsing
  • Patent number: 6753283
    Abstract: A material for refractory shaped bodies or compounds, the material being a pleonaste and/or a spinel of the pleonaste type. In addition to FeOX and Al2O3, the material also includes MgO. The ratio of the iron in the material is calculated as Fe2O3:Al2O3, and ranges from 30:70 to 50:40. The material contains from 20 to 60% by mass of MgO, as based on Fe2O3+Al2O3.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: June 22, 2004
    Assignee: Refratechnik Holding GmbH
    Inventors: Peter Bartha, Hans-Jurgen Klischat, Holger Wirsing, Guido Weibel
  • Patent number: 6740612
    Abstract: A resistor, which is solidified from a melt, is provided for a refractory shaped body, and includes a refractory mineral metal-oxide main component having elasticizers a general formula A2+B3+2O4 in an amount so that solubility of the main component for the elasticizer is exceeded with the elasticizers providing precipitation areas in the main component. The resistor is produced by a joint melting of the main component and the oxides which form the elasticizers. A process is provided for the production of the resistor.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: May 25, 2004
    Assignee: Refratechnik Holding GmbH
    Inventors: Peter Bartha, Hans-Jurgen Klischat, Holger Wirsing, Guido Weibel
  • Publication number: 20030064880
    Abstract: The invention relates to a material for refractory shaped bodies or compounds, wherein the material is a pleonaste and/or a spinel of the pleonaste type which, in addition to FeOx and Al2O3, also includes MgO, the ratio of the iron, calculated as Fe2O3:Al2O3 ranging from 30:70 to 60:40, and the material containing from 20 to 60% by mass of MgO, based on Fe2O3+Al2O3.
    Type: Application
    Filed: April 3, 2002
    Publication date: April 3, 2003
    Inventors: Peter Bartha, Hans-Jurgen Klischat, Holger Wirsing, Guido Weibel
  • Publication number: 20020190243
    Abstract: The invention relates to a resistor which is solidified from the melt, in particular for a refractory shaped body, formed at least from a refractory mineral metal-oxide main component, in which elasticizers of the general formula A2+B3+2O4 are present in an amount which is such that the solubility of the main component for the elasticizer is exceeded, and the elasticizers form precipitation areas in the main component, the resistor being produced by joint melting of the main component and the oxides which form the elasticizers, and to a process for its production.
    Type: Application
    Filed: April 3, 2002
    Publication date: December 19, 2002
    Inventors: Peter Bartha, Hans-Jurgen Klischat, Holger Wirsing, Guido Weibel
  • Publication number: 20020119885
    Abstract: The invention relates to a batch, in particular for the production of refractory shaped bodies, which includes a refractory, metal oxide main component containing 40 to 60% by weight of Al2O3, a phosphate bond and finely particulate SiC with a grain size of <0.2 mm, and to a process for its production.
    Type: Application
    Filed: February 26, 2002
    Publication date: August 29, 2002
    Inventors: Heinrich Liever, Hans-Jurgen Klischat, Holger Wirsing