Patents by Inventor Michael Kempf
Michael Kempf 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).
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Publication number: 20230303794Abstract: The present disclosure relates to a cushioning article comprising a non-syntactic polymeric foam layer; and a plurality of spacer elements arranged within the polymeric foam layer, wherein each spacer element is at least partly embedded into the polymeric foam layer, and wherein each spacer element has a size greater than 200 micrometers.Type: ApplicationFiled: July 22, 2021Publication date: September 28, 2023Inventors: Thomas APELDORN, Michael KEMPF, Pierre BIEBER, René KUHLMANN, Simon PLUGGE, Björn HOFFMANN, David RUDEK, Roman KONIETZNY
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Publication number: 20230272177Abstract: The present disclosure relates to a multilayer construction comprising a polymeric foam layer; and at least one spacer layer comprising a plurality of spacer elements, wherein each spacer element comprises a protruding portion and two opposite terminal portions, and wherein at least one terminal portion of each spacer element is fully embedded into the polymeric foam layer.Type: ApplicationFiled: July 22, 2021Publication date: August 31, 2023Inventors: Thomas APELDORN, Roman KONIETZNY, Pierre BIEBER, René KUHLMANN, Michael KEMPF, Simon PLUGGE, Björn HOFFMANN, Thomas HANNEN
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Publication number: 20230159718Abstract: The present disclosure relates to a silicone rubber foam layer obtainable by a process that includes providing a substrate; providing a first solid film and applying it onto the substrate; providing a coating tool provided with an upstream side and a downstream side, wherein the coating tool is offset from the substrate to form a gap normal to the surface of the substrate; moving the first solid film relative to the coating tool in a downstream direction; providing a curable and foamable precursor of the silicone rubber foam to the upstream side of the coating tool thereby coating the precursor of the silicone rubber foam through the gap as a layer onto the substrate provided with the first solid film; providing a second solid film and applying it along the upstream side of the coating tool, such that the first solid film and the second solid film are applied simultaneously with the formation of the adjacent layer of the precursor of the silicone rubber foam; foaming or allowing the precursor of the siliconeType: ApplicationFiled: March 3, 2021Publication date: May 25, 2023Inventors: Michael KEMPF, Roman KONETZNY, René KUHLMANN, Simon PLUGGE, Thomas APELDORN, Claus MIDDENDORF, Björn HOFFMANN, Christoph KUESTERS, Karoline A. OSTROWSKI, Pierre Reinhard BIEBER
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Publication number: 20220380567Abstract: The present disclosure relates to an extrusion apparatus comprising: a) a planetary roller extruder; b) a melt pump arranged downstream of the extruder; c) optionally, a fluid feeding equipment; d) a static cooling mixer equipment arranged downstream of the melt pump; e) a foaming equipment arranged downstream of the static cooling mixer equipment. The present disclosure also relates to a process of manufacturing a foamed polymeric composition and uses thereof.Type: ApplicationFiled: November 23, 2020Publication date: December 1, 2022Inventors: Thomas Apeldorn, Michael Kempf, Jeffrey P. Kalish
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Publication number: 20220055263Abstract: The present disclosure provides a polymeric membrane. The polymeric membrane includes a first thermoplastic elastomer layer that comprises a styrenic thermoplastic. The thermoplastic elastomer layer has a foam structure. The polymeric membrane can further include an optional second thermoplastic elastomer layer in contact with the first polyolefin layer.Type: ApplicationFiled: September 13, 2019Publication date: February 24, 2022Inventors: Caitlin E. Meree, Jeffrey P. Kalish, Joshua M. Fishman, Susannah C. Clear, John S. Edwards, Duane D. Fansler, David S. Hays, Anthony F. Schultz, Thomas J. Gilbert, Michael Kempf, Thomas Apeldorn
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Patent number: 9738535Abstract: A precipitated silica having an SiOHisolated absorbance ratio of greater than or equal to 1.5, a silanol group density of 1 to 3.0 SiOH/nm2, a modified tapped density of 1 to 50 g/l, and a pH of 3-5, when measured as a aqueous suspension of 5.00 g of the precipitated silica in 100 ml. of deionized water allows preparation of storage-stable RTV-1 silicone rubber formulations without stabilizer. A process for preparing the precipitated silica and its use in thickening sealants is provided.Type: GrantFiled: October 31, 2008Date of Patent: August 22, 2017Assignee: Evonik Degussa GmbHInventors: Christian Panz, Helga Obladen, Karl Meier, Markus Ruf, Rene Allerdisse, Dieter Kuhn, Aziz El Moussaoui, Mario Scholz, Michael Kempf
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Patent number: 9725326Abstract: Provided is a hydrophilic precipitated silica which is well suited to use in silicone rubber formulations (RTV-1, RTV-2, HTV and LSR), particularly well suited to use in HTV silicone rubber formulations. It has a BET surface area of 185˜260 m2/g, a CTAB surface area of 100˜160 m2/g, a BET/CTAB ratio of 1.2˜2.6, and a conductivity of <250 ?S/cm. Also provided are a process for producing the precipitated silica and the use of the precipitated silica for thickening and reinforcing silicone rubber formulations.Type: GrantFiled: July 3, 2009Date of Patent: August 8, 2017Assignee: Evonik Degussa GmbHInventors: Gottlieb-Georg Lindner, Michael Kempf
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Patent number: 8617504Abstract: Hydrophilic precipitated silicas which combine a particularly low initial moisture content with low moisture absorption over time, a low tapped density and a low silanol group density, have the following physicochemical parameters: equilibrium moisture content (at 70% relative humidity/20° C.) of 0.5%-5.0% by weight, based on the weight of the hydrophilic precipitated silica, BET surface area of 50-250 m2/g, CTAB surface area of 50-250 m2/g, and DBP (anhydrous) of 200-350 g/100 g.Type: GrantFiled: May 29, 2007Date of Patent: December 31, 2013Assignee: Evonik Degussa GmbHInventors: Christian Panz, Helga Obladen, Rene Allerdisse, Karl Meier, Markus Ruf, Michael Kempf, Mario Scholz, Dieter Kuhn
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Publication number: 20120029136Abstract: Provided is a hydrophilic precipitated silica which is well suited to use in silicone rubber formulations (RTV-1, RTV-2, HTV and LSR), particularly well suited to use in HTV silicone rubber formulations. It has a BET surface area of 185˜260 m2/g, a CTAB surface area of 100˜160 m2/g, a BET/CTAB ratio of 1.2˜2.6, and a conductivity of <250 ?S/cm. Also provided are a process for producing the precipitated silica and the use of the precipitated silica for thickening and reinforcing silicone rubber formulations.Type: ApplicationFiled: July 3, 2009Publication date: February 2, 2012Applicant: Evonik Degussa GmbHInventors: Gottlieb-Georg Lindner, Michael Kempf
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Patent number: 7767180Abstract: Precipitated silicas having an SiOHisolated absorbance ratio of greater than or equal to 1, may be used as reinforcers and thickeners for sealants.Type: GrantFiled: May 29, 2007Date of Patent: August 3, 2010Assignee: Degussa GmbHInventors: Christian Panz, Helga Obladen, Rene Allerdisse, Karl Meier, Markus Ruf, Michael Kempf, Mario Scholz, Dieter Kuhn
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Publication number: 20090137732Abstract: A precipitated silica having an SiOHisolated absorbance ratio of greater than or equal to 1.5, a silanol group density of 1 to 3.0 SiOH/nm2, a modified tapped density of 1 to 50 g/l, and a pH of 3-5, when measured as a aqueous suspension of 5.00 g of the precipitated silica in 100 ml. of deionized water allows preparation of storage-stable RTV-1 silicone rubber formulations without stabilizer. A process for preparing the precipitated silica and its use in thickening sealants is provided.Type: ApplicationFiled: October 31, 2008Publication date: May 28, 2009Applicant: EVONIK DEGUSSA GmbHInventors: Christian Panz, Helga Obladen, Karl Meier, Markus Ruf, Rene Allerdisse, Dieter Kuhn, Aziz El Moussaoui, Mario Scholz, Michael Kempf
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Publication number: 20070299203Abstract: Hydrophilic precipitated silicas which combine a particularly low initial moisture content with low moisture absorption over time, a low tapped density and a low silanol group density, have the following physicochemical parameters: equilibrium moisture content (at 70% relative humidity/20° C.) of 0.5%-5.0% by weight, based on the weight of the hydrophilic precipitated silica, BET surface area of 50-250 m2/g, CTAB surface area of 50-250 m2/g, and DBP (anhydrous) of 200-350 g/100 g.Type: ApplicationFiled: May 29, 2007Publication date: December 27, 2007Applicant: DEGUSSA GmbHInventors: Christian Panz, Helga Obladen, Rene Allerdisse, Karl Meier, Markus Ruf, Michael Kempf, Mario Scholz, Dieter Kuhn
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Publication number: 20070286788Abstract: Precipitated silicas having an SiOHisolated absorbance ratio of greater than or equal to 1, may be used as reinforcers and thickeners for sealants.Type: ApplicationFiled: May 29, 2007Publication date: December 13, 2007Applicant: DEGUSSA GmbHInventors: Christian PANZ, Helga OBLADEN, Rene ALLERDISSE, Karl MEIER, Markus RUF, Michael KEMPF, Mario SCHOLZ, Dieter KUHN
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Patent number: 6956080Abstract: A room temperature crosslinking, one component (RTV 1C) silicone rubber formulation with hydrophobic, silica featuring extremely low water absorption, a high level of whiteness, and fine-tunable, storage-stable rheological properties with a high reinforcing action in the silicone rubber vulcanizate contains A) from 0.5 to 60% by weight of a hydrophobic silica having the following properties: a carbon content of >3.1%; a methanol wettability of >60%; a reflectance of >94%; a BET/CTAB ratio of from >1 to <3; a DBP absorption of <230 g/100 g; a BET surface area of from 50 to 110 m2/g; a CTAB surface area of >30 m2/g; a water vapor absorption at 30° C. at an ambient humidity of 30 of <1.3; a water vapor absorption at 30° C. at an ambient humidity of 70 of <1.7; and B) 40-99.Type: GrantFiled: January 16, 2003Date of Patent: October 18, 2005Assignee: Degussa AGInventors: Mario Scholz, Michael Kempf, Christian Panz, Kenichi Kawamoto
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Patent number: 6899951Abstract: The present invention provides a hydrophobic precipitated silica having the following properties: carbon content 1.0-8.0% methanol wettability ?20-55% reflectance >94% BET/CTAB ratio ??1 DBP absorption <250 g/100 g BET surface area ?50-110 m2/g CTAB surface area 100-150 m2/g Sears number <13. The present invention also provides methods for making and using the hydrophobic precipitated silica and articles and compositions which include the same.Type: GrantFiled: August 5, 2002Date of Patent: May 31, 2005Assignee: Degussa AGInventors: Christian Panz, Ralf Schmoll, Michael Kempf, Mario Scholz
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Patent number: 6846865Abstract: The invention relates to silicone rubber formulations comprising organopolysiloxanes and hydrophobicized silicas, which possess an extremely high level of whiteness.Type: GrantFiled: September 20, 2002Date of Patent: January 25, 2005Assignee: Degussa AGInventors: Christian Panz, Ralf Schmoll, Uwe Schachtely, Michael Kempf, Mario Scholz
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Publication number: 20030195290Abstract: A room temperature crosslinking, one component (RTV 1C) silicone rubber formulation with hydrophobic, silica featuring extremely low water absorption, a high level of whiteness, and fine-tunable, storage-stable rheological properties with a high reinforcing action in the silicone rubber vulcanizate contains A) from 0.5 to 60% by weight of a hydrophobic silica having the following properties: a carbon content of >3.1%; a methanol wettability of >60%; a reflectance of >94%; a BET/CTAB ratio of from >1 to <3; a DBP absorption of <230 g/100 g; a BET surface area of from 50 to 110 m2/g; a CTAB surface area of >30 m2/g; a water vapor absorption at 30° C. at an ambient humidity of 30 of <1.3; a water vapor absorption at 30° C. at an ambient humidity of 70 of <1.7; and B) 40-99.Type: ApplicationFiled: January 16, 2003Publication date: October 16, 2003Applicant: Degussa AGInventors: Mario Scholz, Michael Kempf, Christian Panz, Kenichi Kawamoto
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Publication number: 20030181565Abstract: The invention relates to silicone rubber formulations comprising organopolysiloxanes and hydrophobicized silicas, which possess an extremely high level of whiteness.Type: ApplicationFiled: September 20, 2002Publication date: September 25, 2003Applicant: Degussa AGInventors: Christian Panz, Ralf Schmoll, Uwe Schachtely, Michael Kempf, Mario Scholz
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Publication number: 20030162881Abstract: The present invention provides a hydrophobic precipitated silica having the following properties: 1 carbon content 1.0-8.0% methanol wettability 20-55% reflectance >94% BET/CTAB ratio ≦1 DBP absorption <250 g/100 g BET surface area 50-110 m2/g CTAB surface area 100-150 m2/g Sears number <13.Type: ApplicationFiled: August 5, 2002Publication date: August 28, 2003Applicant: DEGUSSA AGInventors: Christian Panz, Ralf Schmoll, Michael Kempf, Mario Scholz