Patents by Inventor Frank Ehlen

Frank Ehlen 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: 20230256398
    Abstract: The present disclosure relates to a method of preparing ceramic filtration membranes with a low defect rate and improved filtration performances. The ceramic filtration membranes have a layered structure, wherein the layers are concerted to generate an improved filtration performance.
    Type: Application
    Filed: April 6, 2023
    Publication date: August 17, 2023
    Inventors: Frank EHLEN, Sabine GIESSELMANN
  • Publication number: 20230249138
    Abstract: The present disclosure relates to a method of preparing oxide and non-oxide ceramic filtration elements with a high abrasion resistance, wherein the process of manufacture allows low sinter temperatures in the presence of atmospheric oxygen, wherein the obtained non-oxide filter membrane shows typical behavior of non-oxide ceramic filtration elements.
    Type: Application
    Filed: April 14, 2023
    Publication date: August 10, 2023
    Inventors: Frank EHLEN, Sabine GIESSELMANN
  • Patent number: 11247175
    Abstract: A thermally sterilizable fluid filter (10) for concentrating substances contained in a fluid by way of micro-, nano- or ultrafiltration of the fluid, particularly for concentrating a pharmaceutical precursor and/or intermediate, in particular a vaccine, in a fluid. The fluid filter has a filter housing with a fluid inlet, a retentate outlet and a permeate outlet. A filter cartridge is arranged in the filter housing (12) and has a filter medium of a ceramic material and/or a ceramic composite material. The filter cartridge is held with axial play on the filter housing.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: February 15, 2022
    Assignee: MANN+HUMMEL GmbH
    Inventors: Heike Rupp, Michael Fasold, Herbert Jainek, Sascha Bauer, Frank Ehlen, Stefan Kunze, Jasmin Sorg, Karlheinz Muenkel, Steffen Schuetz, Ulrich Dehnen
  • Patent number: 10857505
    Abstract: A method for the manufacture of ceramic hollow fiber membranes in a spinning process by using a spinning mass, comprising the steps: providing a spinning mass formulation; providing a secondary phase; adding the secondary phase to the spinning mass formulation; manufacturing the ceramic hollow fiber membranes in a spinning process.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: December 8, 2020
    Assignee: MANN+HUMMEL GmbH
    Inventors: Frank Ehlen, Tobias Woerz
  • Patent number: 10675399
    Abstract: A whole blood hollow fiber membrane filter medium is made of a polymeric material having pores of a pore size that ensures permeability to blood plasma or serum but retains blood cells. The whole blood hollow fiber membrane filter medium is used for filtering a whole blood sample so that blood plasma or serum passes through the whole blood hollow fiber membrane filter medium and blood cells are retained. The obtained blood plasma shows no hemolysis.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: June 9, 2020
    Assignee: MANN+HUMMEL GmbH
    Inventors: Steffen Schuetz, Heike Rupp, Dagmar Winkler, Frank Ehlen
  • Publication number: 20200030747
    Abstract: A thermally sterilizable fluid filter (10) for concentrating substances contained in a fluid by way of micro-, nano- or ultrafiltration of the fluid, particularly for concentrating a pharmaceutical precursor and/or intermediate, in particular a vaccine, in a fluid. The fluid filter has a filter housing with a fluid inlet, a retentate outlet and a permeate outlet. A filter cartridge is arranged in the filter housing (12) and has a filter medium of a ceramic material and/or a ceramic composite material. The filter cartridge is arranged held with axial play on the filter housing.
    Type: Application
    Filed: October 7, 2019
    Publication date: January 30, 2020
    Inventors: Heike Rupp, Michael Fasold, Herbert Jainek, Sascha Bauer, Frank Ehlen, Stefan Kunze, Jasmin Sorg, Karlheinz Muenkel, Steffen Schuetz, Ulrich Dehnen
  • Patent number: 10500328
    Abstract: A whole blood hollow fiber membrane filter medium is provided with a ceramic material having pores of a pore size that ensures permeability to blood plasma or serum and its molecular components while blood cells are retained. The whole blood hollow fiber membrane filter medium is used for separating blood plasma from whole blood, wherein the blood plasma preferably shows no hemolysis.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: December 10, 2019
    Assignee: MANN+HUMMEL GmbH
    Inventors: Steffen Schuetz, Heike Rupp, Tobias Woerz, Dagmar Winkler, Kathrin Woerz, Frank Ehlen, Karlheinz Muenkel, Joachim Stinzendoerfer
  • Patent number: 10413870
    Abstract: A filter membrane of a multi-layer configuration for filtration of a medium is provided with at least one first layer that has as a main component an oxide ceramic material and is provided with at least one second layer that has as a main component a non-oxide ceramic material. The first layer is a carrier layer and the second layer is a separation layer that filters the medium and generates a retentate and a permeate.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: September 17, 2019
    Assignee: MANN+HUMMEL GmbH
    Inventor: Frank Ehlen
  • Publication number: 20190015791
    Abstract: A method for the manufacture of ceramic hollow fiber membranes in a spinning process by using a spinning mass, comprising the steps: providing a spinning mass formulation; providing a secondary phase; adding the secondary phase to the spinning mass formulation; manufacturing the ceramic hollow fiber membranes in a spinning process.
    Type: Application
    Filed: July 24, 2018
    Publication date: January 17, 2019
    Inventors: Frank Ehlen, Tobias Woerz
  • Patent number: 10065139
    Abstract: A filter module has hollow fibers which are combined into fiber bundles having end face pottings. The pottings of the fiber bundles are received into a common end disk.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: September 4, 2018
    Assignee: MANN+HUMMEL GmbH
    Inventors: Frank Ehlen, Tobias Woerz, Sabine Giesselmann, Jasmine Jarczak, Marcel Mayer, Steffen Schuetz
  • Patent number: 10029214
    Abstract: A method for the manufacture of ceramic hollow fiber membranes in a spinning process by using a spinning mass, comprising the steps: providing a spinning mass formulation; providing a secondary phase; adding the secondary phase to the spinning mass formulation; manufacturing the ceramic hollow fiber membranes in a spinning process.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: July 24, 2018
    Assignee: MANN+HUMMEL GmbH
    Inventors: Frank Ehlen, Tobias Woerz
  • Publication number: 20170072370
    Abstract: A filter membrane of a multi-layer configuration for filtration of a medium is provided with at least one first layer that has as a main component an oxide ceramic material and is provided with at least one second layer that has as a main component a non-oxide ceramic material. The first layer is a carrier layer and the second layer is a separation layer that filters the medium and generates a retentate and a permeate.
    Type: Application
    Filed: November 24, 2016
    Publication date: March 16, 2017
    Inventor: Frank Ehlen
  • Publication number: 20160151728
    Abstract: A filter module has hollow fibers which are combined into fiber bundles having end face pottings. The pottings of the fiber bundles are received into a common end disk.
    Type: Application
    Filed: February 1, 2016
    Publication date: June 2, 2016
    Inventors: Frank Ehlen, Tobias Woerz, Sabine Giesselmann, Jasmine Jarczak, Marcel Mayer, Steffen Schuetz
  • Publication number: 20160136582
    Abstract: A method for the manufacture of ceramic hollow fiber membranes in a spinning process by using a spinning mass, comprising the steps: providing a spinning mass formulation; providing a secondary phase; adding the secondary phase to the spinning mass formulation; manufacturing the ceramic hollow fiber membranes in a spinning process.
    Type: Application
    Filed: January 27, 2016
    Publication date: May 19, 2016
    Inventors: Frank Ehlen, Tobias Woerz
  • Publication number: 20160096148
    Abstract: A whole blood hollow fiber membrane filter medium is provided with a ceramic material having pores of a pore size that ensures permeability to blood plasma or serum and its molecular components while blood cells are retained. The whole blood hollow fiber membrane filter medium is used for separating blood plasma from whole blood, wherein the blood plasma preferably shows no hemolysis.
    Type: Application
    Filed: December 14, 2015
    Publication date: April 7, 2016
    Inventors: Steffen Schuetz, Heike Rupp, Tobias Woerz, Dagmar Winkler, Kathrin Fischer, Frank Ehlen, Karlheinz Muenkel, Joachim Stinzendoerfer
  • Publication number: 20160074569
    Abstract: A whole blood hollow fiber membrane filter medium is made of a polymeric material having pores of a pore size that ensures permeability to blood plasma or serum but retains blood cells. The whole blood hollow fiber membrane filter medium is used for filtering a whole blood sample so that blood plasma or serum passes through the whole blood hollow fiber membrane filter medium and blood cells are retained. The obtained blood plasma shows no hemolysis.
    Type: Application
    Filed: November 11, 2015
    Publication date: March 17, 2016
    Inventors: Steffen Schuetz, Heike Rupp, Dagmar Winkler, Frank Ehlen
  • Patent number: 9061271
    Abstract: A ceramic body based on an aluminum titanate system has the following composition: i) approximately >95% by weight Al2O3.TiO2; ii) approximately 0.1-approximately 5.0% by weight SiO2; iii) approximately 0.1-approximately 5.0% by weight MgO; iv) approximately 0-approximately 2.0% by weight Fe2O3; v) approximately 0-approximately 1.0% by weight BeO, BaO or CaO; vi) approximately 0-approximately 1.0% by weight Li2O, Na2O or K2O; vii) approximately 0-approximately 2% by weight impurities. The ceramic body has a mass ratio TiO2:Al2O3 that is in a range between approximately 0.75 and approximately 0.95.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: June 23, 2015
    Assignee: Mann+Hummel GmbH
    Inventors: Jochen Linhart, Frank Ehlen
  • Patent number: 8992652
    Abstract: A filtering device features a ceramic filter body for filtering a fluid flow, the filter body consisting of a wavy layer and a flat layer and the wavy and flat layer being wound in a spiral-shaped manner. The wave length of the waves increases from the inside to the outside with increasing distance to the longitudinal axis of the filter body such that the wave troughs and the wave peaks of at least two radially adjacent windings each lie on a common radial plane.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: March 31, 2015
    Assignee: Mann+Hummel GmbH
    Inventors: Arndt-Udo Rolle, Frank Ehlen, Kathrin Lichtenwalter, Jochen Linhart, Nadine Dietsch
  • Publication number: 20130310247
    Abstract: A ceramic body based on an aluminum titanate system has the following composition: i) approximately >95% by weight Al2O3.TiO2; ii) approximately 0.1-approximately 5.0% by weight SiO2; iii) approximately 0.1-approximately 5.0% by weight MgO; iv) approximately 0-approximately 2.0% by weight Fe2O3; v) approximately 0-approximately 1.0% by weight BeO, BaO or CaO; vi) approximately 0-approximately 1.0% by weight Li2O, Na2O or K2O; vii) approximately 0-approximately 2% by weight impurities. The ceramic body has a mass ratio TiO2:Al2O3 that is in a range between approximately 0.75 and approximately 0.95.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 21, 2013
    Applicant: MANN+HUMMEL GMBH
    Inventors: Jochen Linhart, Frank Ehlen
  • Publication number: 20070071962
    Abstract: In a method for producing a ceramic compound, a green second layer having ceramic particles of a size of x?100 nm is disposed onto a green carrier layer. During sintering together of the green layers, the second layer is compacted into a flawless, fine-pored functional layer.
    Type: Application
    Filed: November 19, 2003
    Publication date: March 29, 2007
    Inventors: Frank Ehlen, Olaf Binkle, Ralph Nonninger