Patents by Inventor Thomas Schmehl

Thomas Schmehl 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: 8652512
    Abstract: The present invention discloses a method to prepare specific liposomal formulations for the pulmonary application of therapeutic substances. The liposomal components, DPPC and cholesterol at a molar ratio of 7:3 and 7:4, respectively, are combined with the non-toxic excipients, sphingomyelin, dimyristoylphophatidylcholine and/or polyethylene glycol, to prepare liposomes that are stabile during nebulization with commercially available nebulizers and exhibit sustained release kinetics of encapsulated drug substances.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: February 18, 2014
    Assignee: United Therapeutics Corporation
    Inventors: Thomas Schmehl, Tobias Gessler, Esther Waschkowitz
  • Publication number: 20130149535
    Abstract: The present invention provides nano-, meso- and micro-polymer particles which are able to bind pathogenic proteins penetrating into the lining layer of the lung. Known pathogenic proteins in the pulmonary lining layer are negatively charged. These proteins damage the pulmonary surfactant system which is essential to maintain a low surface tension in the lung and thus a functional respiration. Polymer particles of this invention have a diameter between 20 nm and 10 ?m, are water-insoluble, have a positive surface charge and a low surface hydrophobicity. The isoelectric point of said particles is greater than 5 to that said particles are present in the lining layer of the lung as positively charged particles, and at the same time higher than the isoelectric point of the pathogenic protein to be bound. Polymer particles of this invention can for example be prepared using the precipitation or emulsion method.
    Type: Application
    Filed: July 18, 2011
    Publication date: June 13, 2013
    Applicant: Justus-Liebig-Universitat Giessen
    Inventors: Moritz Beck-Broichsitter, Thomas Schmehl, Tobias Gessler
  • Publication number: 20130039847
    Abstract: The invention relates to liposomes for pulmonary application, advantageously comprising at least one first and at least one second phospholipid, cholesterol, and at least one active substance and/or colorant, wherein the first phospholipid is a phosphatidylcholine, preferably DSPC, and the second phospholipid is a phosphatidylcholine or an ethanolamine, preferably selected from the group DMPC, DPPC, DPPE. It is thereby advantageous if the first and the second phospholipid are present at a molar ratio of 0.5:1 to 10:1, preferably at a ratio of 6:1 to 2:1, in particular preferably at a ratio of 3:1. It is further advantageous if the molar ratio between phospholipids and cholesterol is between 10:1 and 1:1, preferably between 6:1 and 3:1, in particular preferably 4:1. The second phospholipid is further preferably DMPC or DPPE, in particular preferably DPPE. The size of the liposomes is advantageously between 0.05 ?m and 5 ?m, preferably between 0.2 ?m and 2.
    Type: Application
    Filed: June 29, 2010
    Publication date: February 14, 2013
    Applicant: Justus-Liebig-Universitat Gieben
    Inventors: Tobias Gessler, Thomas Schmehl, Monika Rieger
  • Publication number: 20120216801
    Abstract: Treprostinil can be administered using a metered dose inhaler. Such administration provides a greater degree of autonomy to patients. Also disclosed are kits that include a metered dose inhaler containing a pharmaceutical formulation containing treprostinil.
    Type: Application
    Filed: May 11, 2012
    Publication date: August 30, 2012
    Inventors: Horst Olschewski, Robert Roscigno, Lewis J. Rubin, Thomas Schmehl, Werner Seeger, Carl Sterritt, Robert Voswinckel
  • Publication number: 20120148493
    Abstract: The invention relates to composite materials comprising polymer nanofibers and polymer nanoparticles, wherein at least one of the two polymer materials is loaded with a substance selected from therapeutic and diagnostic agents. Fibers and nanoparticles can comprise identical or different polymers; the polymer materials are, however, biocompatible in every case. Therapeutic and diagnostic agents can be hydrophilic or lipophilic and the two polymer materials likewise. The at least one polymer material and the substance with which said material is loaded are either both hydrophilic or both lipophilic. The polymer nanoparticles of the composite materials have a diameter of 10 nm to 600 nm. The polymer fibers have diameters of 10 nm to 50 ?m and lengths of 1 ?m to several meters. The invention further relates to a method for producing said composite materials.
    Type: Application
    Filed: March 16, 2010
    Publication date: June 14, 2012
    Applicant: Justus-Liebig-Universitat Giessen
    Inventors: Thomas Schmehl, Juliane Nguyen, Moritz Beck-Broichsitter, Tobias Gessler, Thomas Kissel, Marcel Thieme
  • Publication number: 20100076083
    Abstract: Treprostinil can be administered using a metered dose inhaler. Such administration provides a greater degree of autonomy to patients. Also disclosed are kits that include a metered dose inhaler containing a pharmaceutical formulation containing treprostinil.
    Type: Application
    Filed: November 12, 2009
    Publication date: March 25, 2010
    Inventors: Horst Olschewski, Robert Roscigno, Lewis J. Rubin, Thomas Schmehl, Werner Seeger, Carl Sterritt, Robert Voswinckel
  • Publication number: 20090298917
    Abstract: The present invention related to a non-viral vector system for the delivery of nucleic acids which is modified on the basis of polyethylene imine (PEI) with polyethylene glycol (PEG) and which contains a peptide sequence with PTD/CPP-functionality. This vector system is used as gene transfer system for the epithelial cells of the bronchial tubes and alveoli of the lung. The system is highly stable, protects the DNA in the pulmonary environment, has a low zeta-potential and a low aggregation tendency in a medium with a high ionic strength. Furthermore, it is characterized by a low in vitro and in vivo cytotoxicity and allows for a very high transfection efficiency. The vector system according to the present invention is used for a transfection by inhalation in local pulmonary therapy.
    Type: Application
    Filed: May 20, 2006
    Publication date: December 3, 2009
    Inventors: Thomas Kissel, Elke Kleemann, Michael Neu, Tobias Gessler, Thomas Schmehl
  • Publication number: 20080299208
    Abstract: The invention relates to novel anisometric mesoparticles and nanoparticles in the form of anisometric mesofibers/nanofibers, mesopipes/nanopipes, mesobands/nanobands, mesocables/nanocables, and the curved and branched or superimposed variations thereof as well as a novel method for the production thereof. The invention particularly relates to anisometric mesoparticles and nanoparticles which have an aerodynamic diameter <5 ?m, the production thereof, loading thereof with active substances if the same cannot directly be utilized as an active substance, and the use thereof especially for producing medicaments against lung diseases or systemic diseases in humans and animals if the particles cannot directly be utilized as medicaments without carriers.
    Type: Application
    Filed: October 22, 2005
    Publication date: December 4, 2008
    Inventors: Joachim H. Wendorff, Angreas Greiner, Thomas Schmehl, Tobias Gessler
  • Publication number: 20080200449
    Abstract: Treprostinil can be administered using a metered dose inhaler. Such administration provides a greater degree of autonomy to patients. Also disclosed are kits that include a metered dose inhaler containing a pharmaceutical formulation containing treprostinil.
    Type: Application
    Filed: May 14, 2007
    Publication date: August 21, 2008
    Inventors: Horst Olschewski, Robert Roscigno, Lewis J. Rubin, Thomas Schmehl, Werner Seeger, Carl Sterritt, Robert Voswinckel
  • Patent number: 7111626
    Abstract: The invention relates to an equine inhalation mask, comprising at least one valveless combined inhalation and exhalation conduit, into which inhalant sources comprising respiration control elements and an energy supply that does not require supply lines are interchangeably integrated. A filter system is mounted on the outer end of the inhalation and exhalation conduit facing away from the head of the horse. Said system and the fact that the mask is effectively sealed when on the head of the horse prevent any escape of the aerosol into the environment, thus permitting a reliable inhalation therapy lasting several minutes under normal respiratory conditions.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: September 26, 2006
    Assignee: TransMIT Gesellschaft fur Technologietransfer mbH
    Inventors: Thomas Schmehl, Tobias Gessler, Kerstin Fey
  • Publication number: 20060127485
    Abstract: The invention concerns a compound formed from a biologically degradable, water-soluble comb polymer based on a polyol backbone with side chains carrying amino groups, and, as a stabilizer, at least one negatively charged organic base, which can be a Lewis or Bronsted base, or its corresponding acid, which can be a Lewis or Bronsted acid, wherein the acid groups of the stabilizers are available in excess or deficiency in relation to the primary, secondary or tertiary amino groups or the basic groups are available in excess or deficiency in relation to the quaternary amino groups of the comb polymers, so that the colloidal particles feature a positive or negative zeta potential. Such colloidal particles are particularly suitable for pulmonary application of acidic or negatively charged pharmaceutically active ingredients.
    Type: Application
    Filed: November 14, 2003
    Publication date: June 15, 2006
    Inventors: Werner Seeger, Thomas Schmehl, Tobias Gessler, Lea Dailey, Matthias Wittmar
  • Publication number: 20060002992
    Abstract: The present invention discloses a method to prepare specific liposomal formulations for the pulmonary application of therapeutic substances. The liposomal components, DPPC and cholesterol at a molar ratio of 7:3 and 7:4, respectively, are combined with the non-toxic excipients, sphingomyelin, dimyristoylphophatidylcholine and/or polyethylene glycol, to prepare liposomes that are stabile during nebulization with commercially available nebulizers and exhibit sustained release kinetics of encapsulated drug substances.
    Type: Application
    Filed: April 4, 2003
    Publication date: January 5, 2006
    Inventors: Thomas Schmehl, Tobias Gessler, Esther Waschkowitz
  • Publication number: 20040231672
    Abstract: The invention relates to an equine inhalation mask, comprising at least one valveless combined inhalation and exhalation conduit, into which inhalant sources comprising respiration control elements and an energy supply that does not require supply lines are interchangeably integrated. A filter system is mounted on the outer end of the inhalation and exhalation conduit facing away from the head of the horse. Said system and the fact that the mask is effectively sealed when on the head of the horse prevent any escape of the aerosol into the environment, thus permitting a reliable inhalation therapy lasting several minutes under normal respiratory conditions.
    Type: Application
    Filed: June 18, 2004
    Publication date: November 25, 2004
    Inventors: Thomas Schmehl, Tobias Gessler, Kerstin Frey
  • Patent number: 6779521
    Abstract: A combination mouthpiece for inhalation therapy devices, having a body (1) defining an aerosol duct (2) through which, in use, a stream of air carrying an aerosolized drug is supplied to a patient during inspiration, an inlet hole (4) through the body for receiving in a releasable and secure manner an oxygen tube adapter (5), characterised by at least one partition (6) within the body (1) defining at least one oxygen duct (3), the oxygen duct being in a form such that it extends generally parallel with the aerosol duct (2) and has a flow cross-section sized in order to guide a suitably large oxygen stream from the oxygen tube adapter (5) through the inlet hole (4) to the patient.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: August 24, 2004
    Assignee: Medic-Aid Limited
    Inventors: Thomas Schmehl, Tobias Gessler, Werner Seeger