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).

  • Patent number: 12570820
    Abstract: 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: Grant
    Filed: November 23, 2020
    Date of Patent: March 10, 2026
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas Apeldorn, Michael Kempf, Jeffrey P. Kalish
  • Publication number: 20250375950
    Abstract: The present disclosure relates generally to the field of cushioning articles, more specifically to the field of articles having pressure management and thermal insulation properties. The present disclosure also relates to a method of manufacturing such articles and to their use for industrial applications for pressure and thermal management applications.
    Type: Application
    Filed: June 20, 2023
    Publication date: December 11, 2025
    Inventors: Kazuhiko Mizuno, Claus H.G. Middendorf, Pierre Reinhard Bieber, Shailendra B. Rathod, Jeffrey P. Kalish, Thomas Apeldorn, Roman Konietzny, Tom Gaide, Petra M. Stegmaier, Simon Plugge, Sascha Sprott, Margaret M. Vogel-Martin, Michael Kempf
  • Patent number: 12441858
    Abstract: 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: Grant
    Filed: July 22, 2021
    Date of Patent: October 14, 2025
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas Apeldorn, Michael Kempf, Pierre Bieber, René Kuhlmann, Simon Plugge, Björn Hoffmann, David Rudek, Roman Konietzny
  • Publication number: 20240409790
    Abstract: The multilayer pressure sensitive adhesive assembly includes a polymeric foam layer and a first pressure sensitive adhesive layer. The polymeric foam includes a plurality of activated carbon particles. The first pressure sensitive adhesive layer includes a multi-arm block copolymer in an amount greater than 20 percent by weight, based on the weight of the first pressure sensitive adhesive layer, and at least one hydrocarbon tackifier. The multi-arm block copolymer has formula Qn-Y, in which Q represents an arm of the multi-arm block copolymer, each arm independently having the formula G-R, n represents the number of arms and is at least 3, and Y is the residue of a multifunctional coupling agent. Each R is independently a rubbery block including a polymerized conjugated diene, a hydrogenated derivative of a polymerized conjugated diene, or combinations thereof, and each G is a glassy block including a polymerized monovinyl aromatic monomer.
    Type: Application
    Filed: October 7, 2022
    Publication date: December 12, 2024
    Inventors: Roman Konietzny, Pierre R. Bieber, René Kuhlmann, Thomas Apeldorn, Achim Boehme, Michael Kempf, Stijn A.M. D'Hollander
  • Publication number: 20240368365
    Abstract: A thermal insulation/protection barrier that provides thermal insulation and protection to battery cells of a battery assembly. The barrier includes a cured silicone rubber foam layer comprising a plurality of firming particles disposed within the silicone rubber foam layer in an amount sufficient to impart additional firmness to the silicone rubber foam layer so that it takes a greater compressive force to compress the foam layer to a desired compression value, compared to the same silicone rubber foam layer without the firming particles.
    Type: Application
    Filed: September 8, 2022
    Publication date: November 7, 2024
    Inventors: Pierre Reinhard Bieber, Roman Konietzny, Tom Gaide, Michael Kempf, Craig W. Lindsay, Thomas Apeldorn, Simon Plugge, Jeffrey P. Kalish, Margaret M. Vogel-Martin, Kazuhiko Mizuno, Bernd Dippel
  • Publication number: 20230303794
    Abstract: 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: Application
    Filed: July 22, 2021
    Publication date: September 28, 2023
    Inventors: Thomas APELDORN, Michael KEMPF, Pierre BIEBER, René KUHLMANN, Simon PLUGGE, Björn HOFFMANN, David RUDEK, Roman KONIETZNY
  • Publication number: 20230272177
    Abstract: 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: Application
    Filed: July 22, 2021
    Publication date: August 31, 2023
    Inventors: Thomas APELDORN, Roman KONIETZNY, Pierre BIEBER, René KUHLMANN, Michael KEMPF, Simon PLUGGE, Björn HOFFMANN, Thomas HANNEN
  • Publication number: 20230159718
    Abstract: 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 silicone
    Type: Application
    Filed: March 3, 2021
    Publication date: May 25, 2023
    Inventors: Michael KEMPF, Roman KONETZNY, René KUHLMANN, Simon PLUGGE, Thomas APELDORN, Claus MIDDENDORF, Björn HOFFMANN, Christoph KUESTERS, Karoline A. OSTROWSKI, Pierre Reinhard BIEBER
  • Publication number: 20220380567
    Abstract: 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: Application
    Filed: November 23, 2020
    Publication date: December 1, 2022
    Inventors: Thomas Apeldorn, Michael Kempf, Jeffrey P. Kalish
  • Publication number: 20220055263
    Abstract: 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: Application
    Filed: September 13, 2019
    Publication date: February 24, 2022
    Inventors: 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
  • Patent number: 9738535
    Abstract: 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: Grant
    Filed: October 31, 2008
    Date of Patent: August 22, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Panz, Helga Obladen, Karl Meier, Markus Ruf, Rene Allerdisse, Dieter Kuhn, Aziz El Moussaoui, Mario Scholz, Michael Kempf
  • Patent number: 9725326
    Abstract: 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: Grant
    Filed: July 3, 2009
    Date of Patent: August 8, 2017
    Assignee: Evonik Degussa GmbH
    Inventors: Gottlieb-Georg Lindner, Michael Kempf
  • Patent number: 8617504
    Abstract: 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: Grant
    Filed: May 29, 2007
    Date of Patent: December 31, 2013
    Assignee: Evonik Degussa GmbH
    Inventors: Christian Panz, Helga Obladen, Rene Allerdisse, Karl Meier, Markus Ruf, Michael Kempf, Mario Scholz, Dieter Kuhn
  • Publication number: 20120029136
    Abstract: 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: Application
    Filed: July 3, 2009
    Publication date: February 2, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Gottlieb-Georg Lindner, Michael Kempf
  • Patent number: 7767180
    Abstract: Precipitated silicas having an SiOHisolated absorbance ratio of greater than or equal to 1, may be used as reinforcers and thickeners for sealants.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: August 3, 2010
    Assignee: Degussa GmbH
    Inventors: Christian Panz, Helga Obladen, Rene Allerdisse, Karl Meier, Markus Ruf, Michael Kempf, Mario Scholz, Dieter Kuhn
  • Publication number: 20090137732
    Abstract: 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: Application
    Filed: October 31, 2008
    Publication date: May 28, 2009
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Christian Panz, Helga Obladen, Karl Meier, Markus Ruf, Rene Allerdisse, Dieter Kuhn, Aziz El Moussaoui, Mario Scholz, Michael Kempf
  • Publication number: 20070299203
    Abstract: 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: Application
    Filed: May 29, 2007
    Publication date: December 27, 2007
    Applicant: DEGUSSA GmbH
    Inventors: Christian Panz, Helga Obladen, Rene Allerdisse, Karl Meier, Markus Ruf, Michael Kempf, Mario Scholz, Dieter Kuhn
  • Publication number: 20070286788
    Abstract: Precipitated silicas having an SiOHisolated absorbance ratio of greater than or equal to 1, may be used as reinforcers and thickeners for sealants.
    Type: Application
    Filed: May 29, 2007
    Publication date: December 13, 2007
    Applicant: DEGUSSA GmbH
    Inventors: Christian PANZ, Helga OBLADEN, Rene ALLERDISSE, Karl MEIER, Markus RUF, Michael KEMPF, Mario SCHOLZ, Dieter KUHN
  • Patent number: 6956080
    Abstract: 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: Grant
    Filed: January 16, 2003
    Date of Patent: October 18, 2005
    Assignee: Degussa AG
    Inventors: Mario Scholz, Michael Kempf, Christian Panz, Kenichi Kawamoto
  • Patent number: 6899951
    Abstract: 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: Grant
    Filed: August 5, 2002
    Date of Patent: May 31, 2005
    Assignee: Degussa AG
    Inventors: Christian Panz, Ralf Schmoll, Michael Kempf, Mario Scholz