Patents by Inventor Dietmar HANSEL

Dietmar HANSEL 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: 11872530
    Abstract: The invention relates to the providing of hydrophobic and hydrophilic polymer-based hollow fiber membranes containing a water-insoluble antioxidant; in particular, the invention relates to the providing of hollow fiber membranes for the extracorporeal treatment of blood, wherein the hollow fiber membranes have improved biocompatibility relative to treatment blood, in particular improved complement activation and lower platelet loss vis-à-vis treatment blood. At the same time, the elution of hydrophilic polymers from the lumen of the hollow fiber membrane is reduced.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: January 16, 2024
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Michael Paul, Rainer Fislage, Dietmar Hansel
  • Publication number: 20230321610
    Abstract: A hollow fiber membrane for separating blood plasma from blood, comprising a blood contact layer and a support layer each comprising a hydrophobic polymer, a hydrophilic polymer and vitamin E, and a method for producing said hollow fiber membrane to provide a hollow fiber membrane is described. The hollow fiber membrane is characterized by a reduced hemolysis activity so that the hollow fiber membrane can be advantageously used in plasmapheresis methods.
    Type: Application
    Filed: June 1, 2021
    Publication date: October 12, 2023
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Dietmar HANSEL, Michael PAUL
  • Publication number: 20230054223
    Abstract: The invention relates to the providing of hydrophobic and hydrophilic polymer-based hollow fiber membranes containing a water-insoluble antioxidant; in particular, the invention relates to the providing of hollow fiber membranes for the extracorporeal treatment of blood, wherein the hollow fiber membranes have improved biocompatibility relative to treatment blood, in particular improved complement activation and lower platelet loss vis-à-vis treatment blood. At the same time, the elution of hydrophilic polymers from the lumen of the hollow fiber membrane is reduced.
    Type: Application
    Filed: August 25, 2022
    Publication date: February 23, 2023
    Applicant: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Michael PAUL, Rainer FISLAGE, Dietmar HANSEL
  • Patent number: 11484844
    Abstract: The invention relates to the providing of hydrophobic and hydrophilic polymer-based hollow fiber membranes containing a water-insoluble antioxidant; in particular, the invention relates to the providing of hollow fiber membranes for the extracorporeal treatment of blood, wherein the hollow fiber membranes have improved biocompatibility relative to treatment blood, in particular improved complement activation and lower platelet loss vis-à-vis treatment blood. At the same time, the elution of hydrophilic polymers from the lumen of the hollow fiber membrane is reduced.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: November 1, 2022
    Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
    Inventors: Michael Paul, Rainer Fislage, Dietmar Hansel
  • Publication number: 20200188860
    Abstract: The invention relates to the providing of hydrophobic and hydrophilic polymer-based hollow fiber membranes containing a water-insoluble antioxidant; in particular, the invention relates to the providing of hollow fiber membranes for the extracorporeal treatment of blood, wherein the hollow fiber membranes have improved biocompatibility relative to treatment blood, in particular improved complement activation and lower platelet loss vis-à-vis treatment blood. At the same time, the elution of hydrophilic polymers from the lumen of the hollow fiber membrane is reduced.
    Type: Application
    Filed: January 31, 2018
    Publication date: June 18, 2020
    Inventors: Michael PAUL, Rainer FISLAGE, Dietmar HANSEL
  • Publication number: 20170175257
    Abstract: The present invention relates to an apparatus for manufacturing an adhesive-free gas barrier film comprising conveying means for conveying a film web; at least one first lock system for introducing the film web into a coating chamber of the apparatus; at least one first coating means by means of which the film web can be at least partially coated by depositing a barrier material in the coating chamber; and optionally at least one second lock system for expelling the film web out of the coating chamber; and at least one second coating means by means of which the coated film web can be at least partially coated by extrusion of a plastic melt.
    Type: Application
    Filed: December 30, 2016
    Publication date: June 22, 2017
    Inventors: Dietmar HANSEL, Klaus HEILMANN, Thomas SCHULTE, Tobias PFEIL, Bjoern BREITER
  • Publication number: 20140087161
    Abstract: The present invention relates to an apparatus for manufacturing an adhesive-free gas barrier film comprising conveying means for conveying a film web; at least one first lock system for introducing the film web into a coating chamber of the apparatus; at least one first coating means by means of which the film web can be at least partially coated by depositing a barrier material in the coating chamber; and optionally at least one second lock system for expelling the film web out of the coating chamber; and at least one second coating means by means of which the coated film web can be at least partially coated by extrusion of a plastic melt.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 27, 2014
    Applicant: Fresenius Medical Care Deutschland GmbH
    Inventors: Dietmar HANSEL, Klaus HEILMANN, Thomas SCHULTE, Tobias PFEIL, Bjoern BREITER