Patents by Inventor Melanie Liefke

Melanie Liefke 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: 11819576
    Abstract: A process can be used for preparing nano- or microparticles containing a carrier-polymer and a biologically active ingredient. The process is a solvent emulsion process involving an organic phase (OP) and an aqueous phase (AP) to form an emulsion. In the case of an oil-in-water emulsion (O/W), the organic phase (OP) contains the biologically active ingredient dissolved or dispersed therein. Alternatively, in the case of a water-in-oil emulsion (W1/O), the aqueous phase (AP) contains the biologically active ingredient dissolved or dispersed therein. The organic phase (OP) is saturated with the salt-containing aqueous phase (AP) and vice versa.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: November 21, 2023
    Assignee: Evonik Operations GmbH
    Inventors: Michael Damm, Andrea Engel, Melanie Liefke
  • Publication number: 20230147853
    Abstract: A process can be used for preparing nano- or microparticles containing a carrier-polymer and a biologically active ingredient. The process is a solvent emulsion process involving an organic phase (OP) and an aqueous phase (AP) to form an emulsion. In the case of an oil-in-water emulsion (O/W), the organic phase (OP) contains the biologically active ingredient dissolved or dispersed therein. Alternatively, in the case of a water-in-oil emulsion (W1/O), the aqueous phase (AP) contains the biologically active ingredient dissolved or dispersed therein. The organic phase (OP) is saturated with the salt-containing aqueous phase (AP) and vice versa.
    Type: Application
    Filed: October 29, 2020
    Publication date: May 11, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Michael DAMM, Andrea Engel, Melanie Liefke
  • Patent number: 10682307
    Abstract: The present invention relates to a gastric retention active delivery system in the form of a coated capsule, which, in contrast to prior art delivery systems exhibiting relatively poor floating-properties, and thus requiring size expansion capability in order to securely delay passage through the pylorus, reliably stay afloat for several hours. This is achieved by combining pore forming components and flexible polymer components in the coating in suitable proportions. The present invention, further, relates to the use of gastric retention active delivery systems of the invention for the delivery of one or more water soluble active components A to a mammal.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: June 16, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Andrea Engel, Thomas Gottstein, Melanie Liefke
  • Publication number: 20190282493
    Abstract: The present invention relates to a gastric retention active delivery system in the form of a coated capsule, which, in contrast to prior art delivery systems exhibiting relatively poor floating-properties, and thus requiring size expansion capability in order to securely delay passage through the pylorus, reliably stay afloat for several hours. This is achieved by combining pore forming components and flexible polymer components in the coating in suitable proportions. The present invention, further, relates to the use of gastric retention active delivery systems of the invention for the delivery of one or more water soluble active components A to a mammal.
    Type: Application
    Filed: October 27, 2016
    Publication date: September 19, 2019
    Applicant: Evonik Technochemie GmbH
    Inventors: Andrea ENGEL, Thomas Gottstein, Melanie Liefke
  • Patent number: 10322169
    Abstract: A process for preparing a powder, which includes one or more human coagulation factor proteins and a lactic acid polymer, involves mixing and dispersing a lactic acid polymer with a particle size d50 in the range 0.1-2 ?m and the one or more human coagulation factor proteins in water. The dispersion is dried, and the resulting dried mass is compressed. The resulting compressed dried mass is comminuted to a powder with a particle size d50 in the range of more than 0.5 and up to 5 ?m.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: June 18, 2019
    Assignee: Evonik Roehm GmbH
    Inventors: Juan Tome-Alcalde, Norbert Windhab, Melanie Liefke, Anne Benedikt, Jessica Müller-Albers, Tom Tice, Susanne Ullrich, Andrea Engel, Matthias Germer, Steffen Kistner, Jens Daufenbach
  • Publication number: 20180153967
    Abstract: A process for preparing a powder, which includes one or more human coagulation factor proteins and a lactic acid polymer, involves mixing and dispersing a lactic acid polymer with a particle size d50 in the range 0.1-2 ?m and the one or more human coagulation factor proteins in water. The dispersion is dried, and the resulting dried mass is compressed. The resulting compressed dried mass is comminuted to a powder with a particle size d50 in the range of more than 0.5 and up to 5 ?m.
    Type: Application
    Filed: June 6, 2016
    Publication date: June 7, 2018
    Applicant: Evonik Roehm GmbH
    Inventors: Juan Tome-Alcalde, Norbert Windhab, Melanie Liefke, Anne Benedikt, Jessica Müller-Albers, Tom Tice, Susanne Ullrich, Andrea Engel, Matthias Germer, Steffen Kistner, Jens Daufenbach
  • Patent number: 9050256
    Abstract: The invention relates to an oral dosage form, comprising at least one biologically active agent, formulation auxiliary substances and magnetizable particles, wherein the dosage form has an at least two phase composition, wherein the phases can dissolve in the body after oral administration due to their formulation and the magnetizable particles are bound in formulation auxiliary substances and are present in a magnetized state, wherein the magnetized particles are present in at least two phases of the dosage form and generate magnetic fields, wherein these phases dissolve at different times in the body after oral administration, and wherein the magnetic field strength with respect to time, position and movement in the body is acquired using a detection system and can be evaluated using a computer-based evaluation system.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: June 9, 2015
    Assignee: Evonik Röhm Gmbh
    Inventors: Benedikt Hartwig, Norbert Windhab, Melanie Liefke, Juan Tome Alcalde, Michael Damm, Rosario Lizio, Michael Gottschalk, Angela Olf, Christian Meier, Andreas Gryczke
  • Patent number: 8765152
    Abstract: The invention relates to a pharmaceutical or nutraceutical formulation comprising a core, comprising an active pharmaceutical or nutraceutical ingredient, a penetration promoter and a bioavailability promoting agent, and a polymeric coating for the gastrointestinal targeted release of the active ingredient, characterized in that the bioavailability promoting agent is a pharmaceutically acceptable inhibitor of proteolytic enzymes, which increases the oral bioavailability of the active ingredient by a factor of at least five, compared to a corresponding formulation without the bioavailability promoting agent.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: July 1, 2014
    Assignee: Evonik Roehm GmbH
    Inventors: Rosario Lizio, Michael Gottschalk, Michael Damm, Norbert Windhab, Melanie Liefke, Guenter Schmitt, Erna Roth, Ruediger Alexowsky
  • Publication number: 20120315334
    Abstract: The invention relates to a pharmaceutical or nutraceutical formulation comprising a core, comprising an active pharmaceutical or nutraceutical ingredient, a penetration promoter and a bioavailability promoting agent, and a polymeric coating for the gastrointestinal targeted release of the active ingredient, characterized in that the bioavailability promoting agent is a pharmaceutically acceptable inhibitor of proteolytic enzymes, which increases the oral bioavailability of the active ingredient by a factor of at least five, compared to a corresponding formulation without the bioavailability promoting agent.
    Type: Application
    Filed: February 25, 2010
    Publication date: December 13, 2012
    Applicant: Evonik Roehm GmbH
    Inventors: Rosario Lizio, Michael Gottschalk, Michael Damm, Norbert Windhab, Melanie Liefke, Guenter Schmitt, Erna Roth, Ruediger Alexowsky
  • Publication number: 20120143039
    Abstract: The invention relates to an oral dosage form, comprising at least one biologically active agent, formulation auxiliary substances and magnetizable particles, wherein the dosage form has an at least two phase composition, wherein the phases can dissolve in the body after oral administration due to their formulation and the magnetizable particles are bound in formulation auxiliary substances and are present in a magnetized state, wherein the magnetized particles are present in at least two phases of the dosage form and generate magnetic fields, wherein these phases dissolve at different times in the body after oral administration, and wherein the magnetic field strength with respect to time, position and movement in the body is acquired using a detection system and can be evaluated using a computer-based evaluation system.
    Type: Application
    Filed: August 30, 2010
    Publication date: June 7, 2012
    Applicant: Evonik Roehm GmbH
    Inventors: Benedikt Hartwig, Norbert Windhab, Melanie Liefke, Juan Tome Alcalde, Michael Damm, Rosario Lizio, Michael Gottschalk, Angela Olf, Christian Meier, Andreas Gryczke