Patents by Inventor Hans-Ulrich Petereit

Hans-Ulrich Petereit 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: 10537530
    Abstract: The invention provides a gastric resistant, enteric-coated solid dosage form including a core containing a pharmaceutically active ingredient, an inner coating for the core, and an outer enteric coating. The inner coating comprises an anionic polymeric material or a water-soluble neutral polymeric material, and further comprises a water soluble inorganic salt which is not a carbonate or bicarbonates. The outer enteric coating comprises an anionic polymeric material which is less neutralized than the polymeric material comprising the inner coating and disintegrates rapidly at a pH of 5.5 to 7.0 upon entering the small intestine.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: January 21, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Fang Liu, Abdul W. Basit, Rosario Lizio, Hans-Ulrich Petereit, Christian Meier, Michael Damm
  • Patent number: 10172807
    Abstract: The invention refers to a nanoparticle with a diameter which is the maximum in the nanoparticle size distribution, in the range of 10-300 nm, comprising a) a calcium phosphate nanoparticle core a), b) an active ingredient coating b) on the calcium phosphate nanoparticle core a), c) a lactic acid polymer coating c) on the active ingredient coating b), d) a cationic polymer coating d) on the lactic acid polymer coating c) selected from the group of polyethylene-imines, chitosan and human lactoferrin-derived peptides with a length of 14 to 30 amino acids.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: January 8, 2019
    Assignee: Evonik Röhm GmbH
    Inventors: Rosario Lizio, Silko Grimm, Hans-Ulrich Petereit, Matthias Epple, Gregor Doerdelmann
  • Patent number: 10113050
    Abstract: A powdery or granulated composition, containing: (a) a copolymer containing, in polymerized form, a C1- to C4-alkyl ester of acrylic or methacrylic acid and an alkyl(meth)acrylate monomer containing a tertiary amino group in an alkyl radical; (b) 0.5 to 10% by weight based on (a) of a dicarboxylic acid having 3 to 10 carbon atoms; and (c) 5 to 20% by weight based on (a) of a fatty monocarboxylic acid having 8 to 18 carbon atoms, where the composition contains at least by 30% by weight of (a), (b), and (c).
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: October 30, 2018
    Assignee: Evonik Roehm GmbH
    Inventors: Erna Roth, Ruediger Alexowsky, Hans-Ulrich Petereit, Christian Meier
  • Publication number: 20180256606
    Abstract: The invention relates to a multilayer dosage form comprised of: a) a neutral core; b) an inner coating consisting of a methacrylate copolymer; c) an outer coating consisting of a copolymer of which 40 to 95% by weight is composed of radically polymerized C1 to C4 alkyl esters of acrylic acid or of methacrylic acid and of which 5 to 60% by weight is composed of (meth)acrylate monomers having an anionic group in the alkyl radical. The invention is characterized in that the inner coating is essentially comprised of a methacrylate copolymer, of which at least up to 90% by weight consists of (meth)acrylate monomers with neutral radicals, which, in accordance with DIN 53 787, has a minimum film formation temperature of no higher than 30° C., and which contains the pharmaceutical active substance in bound form.
    Type: Application
    Filed: May 9, 2018
    Publication date: September 13, 2018
    Applicant: Evonik Roehm GmbH
    Inventors: Hans-Ulrich PETEREIT, Markus RUDOLPH, Jennifer DRESSMAN, Thomas BECKERT
  • Publication number: 20170333361
    Abstract: The invention refers to a nanoparticle with a diameter which is the maximum in the nanoparticle size distribution, in the range of 10-300 nm, comprising a) a calcium phosphate nanoparticle core a), b) an active ingredient coating b) on the calcium phosphate nanoparticle core a), c) a lactic acid polymer coating c) on the active ingredient coating b), d) a cationic polymer coating d) on the lactic acid polymer coating c) selected from the group of polyethylene-imines, chitosan and human lactoferrin-derived peptides with a length of 14 to 30 amino acids.
    Type: Application
    Filed: May 26, 2015
    Publication date: November 23, 2017
    Applicant: Evonik Roehm GmbH
    Inventors: Rosario LIZIO, Silko GRIMM, Hans-Ulrich PETEREIT, Matthias EPPLE, Gregor DOERDELMANN
  • Patent number: 9700520
    Abstract: The invention relates to a pH-dependent controlled release pharmaceutical composition, comprising a core, comprising at least one pharmaceutical active ingredient, which is an opioid, wherein the core is coated at least by one coating layer, controlling the release of the pharmaceutical composition, wherein the coating layer comprises a polymer mixture of i) 40-95% by weight, based on dry weight of the polymer mixture, of at least one water insoluble essentially neutral vinyl polymer, and ii) 5-60% by weight, based on dry weight of the polymer mixture, of at least one anionic polymer or copolymer, which is insoluble in a buffered medium below pH 4.0 and soluble at least in the range from pH 7.0 to pH 8.0, characterized in that the coating layer further contains 110 to 250% by weight, calculated on dry weight of the polymer mixture, of a non-porous inert lubricant and the coating layer is present in an amount of at least 60% by weight calculated on the weight of core.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: July 11, 2017
    Assignee: Evonik Roehm GmbH
    Inventors: Hans-Ulrich Petereit, Hema Ravishankar, Ashwini Samel
  • Patent number: 9597293
    Abstract: The present invention provides a solid dosage form including an inner coating located between a core containing a pharmaceutically active ingredient and an outer enteric coating; wherein the inner coating includes a partially neutralized anionic polymeric material, and at least a carboxylic acid having 2 to 16 carbon atoms the salts thereof or mixtures of the acid and its salt; wherein the outer coating includes an anionic polymeric material which is less or not at all neutralized than the material of the inner coating.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: March 21, 2017
    Assignee: EVONIK RÖHM GmbH
    Inventors: Fang Liu, Abdul W. Basit, Rosario Lizio, Hans-Ulrich Petereit, Christian Meier, Michael Damm
  • Patent number: 9555006
    Abstract: The invention relates to a pH-dependent controlled release pharmaceutical composition, comprising at least one pharmaceutical active ingredient, with the exception of opioids, wherein the core is coated at least by one coating layer, controlling the release of the pharmaceutical composition, wherein the coating layer comprises a polymer mixture of i) 40-95% by weight, based on dry weight of the polymer mixture, of at least one water insoluble essentially neutral vinyl polymer or copolymer, and ii) 5-60% by weight, based on dry weight of the polymer mixture, of at least one anionic polymer or copolymer, which is insoluble in a buffered medium below pH 4.0 and soluble at least in the range from pH 7.0 to pH 8.0. characterized in that the coating layer further contains 110 to 250% by weight, calculated on dry weight of the polymer mixture, of a non-porous inert lubricant and the is present in an amount of at least 60% by weight calculated on the weight of core.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: January 31, 2017
    Assignee: EVONIK ROEHM GmbH
    Inventors: Hans-Ulrich Petereit, Hema Ravishankar, Ashwini Samel
  • Patent number: 9492394
    Abstract: The invention relates to a gastric resistant pharmaceutical or nutraceutical composition, comprising a core, comprising a pharmaceutical or nutraceutical active ingredient and a gastric resistant coating layer onto the core, wherein the release of the pharmaceutical or nutraceutical active ingredient is not more than 15% under in-vitro conditions at pH 1.2 for 2 hours in medium according to USP with and without the addition of 40% (v/v) ethanol, wherein the gastric resistant coating layer comprises 10 to 100% by weight of one or more salts of alginic acid with a viscosity of 30 to 720 cP of a 1% aqueous solution.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: November 15, 2016
    Assignee: Evonik Roehm GmbH
    Inventors: Shraddha Ashok Bodinge, Priyanka Bansilal Haksar, Seema Yashwant Gawde, Hemant Karbhari Pagar, Hans-Ulrich Petereit
  • Patent number: 9480654
    Abstract: The invention relates to novel particulate drug-delivery systems based on a polymer support containing at least one linear, branched or cross-linked polymer in a fraction of over 50 percent by weight in relation to the total weight of the support. The system is characterized in that at least one signal substance for transport through a biological barrier and at least one active ingredient are stored, the support, signal substance and active ingredient having no covalent links and no active-ingredient specific and signal substance specific coordinative links between one another.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: November 1, 2016
    Assignee: EVONIK ROEHM GmbH
    Inventors: Matthias Seiler, Norbert Windhab, Manfred Stickler, Hans-Ulrich Petereit
  • Publication number: 20160081933
    Abstract: The invention relates to a process for stabilizing the drug release profile of a polymer film coated pharmaceutical composition, wherein the pharmaceutical composition comprises a core comprising an active pharmaceutical ingredient and a polymer film coating onto the core which was applied by a spray coating process, including a subsequent drying step, by applying microwave-irradiation, infrared-irradiation, UV-irradiation or ultra sonic wave irradiation to the polymer film coated pharmaceutical compositions.
    Type: Application
    Filed: August 19, 2013
    Publication date: March 24, 2016
    Applicant: EVONIK ROEHM GMBH
    Inventors: Odette HENSEL, Shraddha Sanjeev Joshi, Smitha SHETTY, Takayuki MORITA, Tatsuya ISHII, Hans-Ulrich PETEREIT
  • Patent number: 9284416
    Abstract: The present invention provides a process for converting a solid (meth)acrylate copolymer into a dispersed form by preparing an aqueous dispersion comprising the components (a) a (meth)acrylate copolymer which is composed of free-radical polymerized methyl methacrylate, ethylacrylate and a salt of 2-trimethylammoniumethyl methacrylate, present in solid form as a powder or as a granulate, (b) up to 50% by weight calculated on the (meth)acrylate copolymer (a) of a dispersing agent selected from the groups of (b) i) plasticizers in combination with emulsifiers and/or (b) ii) pharmaceutically acceptable carbohydrates having 6 to 18 carbon atoms with a functional group and (c) water by mixing the components (a), (b) and (c) to give a suspension which becomes an aqueous dispersion during the conversion of the solid (meth)acrylate copolymer into the dispersed form, characterized in that, the (meth)acrylate copolymer is converted into the dispersed form by means of the presence of the dispersing agent at a temperature
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: March 15, 2016
    Assignee: Evonik Roehm GmbH
    Inventors: Erna Roth, Ruediger Alexowsky, Hans-Ulrich Petereit, Kathrin Nollenberger, Christian Meier
  • Patent number: 9237760
    Abstract: The present invention relates to a pharmaceutical or nutraceutical preparation comprising a) a core containing a pharmaceutically or nutraceutically active substance; and b) an inner controlling layer surrounding the core comprising i) one or a mixture of a plurality of (meth)acrylate copolymers bearing a cationic group or a group that can be converted to a cationic group; and ii) one or a mixture of a plurality of polymers or copolymers bearing an anionic group or group that can be converted to an anionic group; and c) an outer controlling layer comprising one or a mixture of a plurality of polymers or copolymers bearing an anionic group or group that can be converted to an anionic group and to tablets or capsules comprising same.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: January 19, 2016
    Assignee: EVONIK RÖHM GmbH
    Inventors: Hema Ravishankar, Shraddha Bodinge, Hans-Ulrich Petereit
  • Patent number: 9107451
    Abstract: A coating composition for the enteric coating of capsule halves made of water-soluble or water-swellable polymer material in a dipping process is provided. The composition is an aqueous dispersion or solution, containing a polymer mixture of at least one first (meth)acrylate copolymer, which is enteric, and at least one further (meth)acrylate copolymer, which is enteric or water-insoluble, and also auxiliaries which influence the viscosity of the dispersion and the elasticity of the dried polymer film. The solids content of the dispersion or solution is more than 25% by weight and the viscosity is 150 to 1500 mPa·s and a dried film produced from the dispersion or solution has an elongation at break of at least 200%. Also provided is a capsule composed of two capsule halves coated with the dispersion or solution in a dipping process does. The enteric capsule does not dissolve in 0.1 N HCl at pH 1.2 after two hours, but completely dissolves in buffer at pH 6.8 in less than 30 minutes.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: August 18, 2015
    Assignee: Evonik Röhm GmbH
    Inventors: Brigitte Skalsky, Manfred Aβmus, Odette Hensel, Hans-Ulrich Petereit
  • Patent number: 9011907
    Abstract: The present invention relates to a pharmaceutical or nutraceutical preparation comprising a) a core containing a pharmaceutically or nutraceutically active substance and a substance that acts in a modulatory manner with regard of the release of pharmaceutically or nutraceutically active substances; and b) a controlling layer surrounding the core comprising i) 55 to 92% by weight based on the total weight of (meth)acrylic copolymers present in the layer of one or a mixture of a plurality of (meth)acrylate copolymers composed of 80 to 98% by weight based on the weight of the (meth)acrylic copolymer of structural units derived from C1 to C4 alkyl esters of (meth)acrylic acid and 2 to 20% by weight based on the weight of the (meth)acrylic copolymer of structural units derived from (meth)acrylate monomers with a quaternary ammonium group in the alkyl radical; and ii) 8 to 45% by weight based on the total weight of (meth)acrylic copolymers present in the layer of one or a mixture of a plurality of (meth)acrylate co
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: April 21, 2015
    Assignee: Evonik Röhm GmbH
    Inventors: Hema Ravishankar, Shradda Bodinge, Hans-Ulrich Petereit
  • Patent number: 8999385
    Abstract: The invention relates to a method for producing an oral form of administration which decomposes immediately and releases active ingredients in the mouth. According to said method, (a) an anionic pharmaceutical active ingredient is intensively mixed with (b) a copolymer consisting of radically polymerized C1-C4 esters of the acrylic acid or methacrylic acid and other (meth)acrylate monomers containing functional tertiary amino groups, and (c) between 5 and 50 wt. %, in relation to (b), of a C12-C22 carboxylic acid in the melted mass; the mixture is solidified and ground to form a powder containing active ingredients having an average particle size of 200 ?m or less; and the powder is encapsulated in a water-soluble matrix consisting of pharmaceutically standard adjuvants, on the condition that no more than 3 wt. %, in relation to the copolymer, of emulsifiers with an HLB value of at least 14 must be contained therein.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: April 7, 2015
    Assignee: EVONIK RÖHM GmbH
    Inventors: Hans-Ulrich Petereit, Christian Meier, Andreas Gryczke
  • Patent number: 8951558
    Abstract: The invention relates to an aqueous medium containing an amino(meth)acrylate polymer or copolymer which is not soluble in dematerialised water, characterized in that the medium has a content of an aqueous phase of at least 60% by weight and a content of up to 40% by weight of solids comprising the amino(meth)acrylate polymer or copolymer, whereby the aqueous phase is charged by a sufficient amount of carbon dioxide that effects the amino(meth)acrylate polymer or copolymer to be present in solute form in the medium. The aqueous medium may be used beneficially as a coating or binding solution for the spray coating or binding of pharmaceutical compositions or nutraceutical compositions or cosmetical compositions.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: February 10, 2015
    Assignee: Evonik Röhm GmbH
    Inventors: Rosario Lizio, Michael Damm, Hans-Ulrich Petereit
  • Patent number: 8734849
    Abstract: The invention relates to an oral, multiparticle pharmaceutical dosage form containing pellets, the size of which ranges from 50 to 2500 ?m and which essentially consist of: a) an inner matrix layer containing an active substance which is a peptide or a protein, including the derivatives or conjugates thereof, and which is embedded in a matrix consisting of a polymer with mucoadhesive effect, and b) an outer film coating essentially consisting of an anionic polymer or copolymer, which can be optionally formulated with pharmaceutically conventional adjuvants, more particularly softening agents.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: May 27, 2014
    Assignee: Evonik Roehm GmbH
    Inventors: Rosario Lízio, Hans-Ulrich Petereit, Erna Roth, Inès Andres, Michael Damm
  • Patent number: 8642089
    Abstract: The invention relates to a method for producing active ingredient-containing granules or powders involving the following steps: a) melting a mixture consisting of a pharmaceutical active ingredient and of a (meth)acrylate copolymer, which is comprised of 40 to 75 wt. % of radically polymerized C1 to C4 alkyl esters of acrylic acid or of methacrylic acid and can be comprised of 25 to 60 wt. % (meth)acrylate monomers having an anionic group in the alkyl radial; b) extruding the mixture, and; c) comminuting the extrudate to form a granule or powder. The inventive method is characterized in that the active ingredient is the salt of an alkaline substance, and in that the pH value, which can be measured on the obtained powder or granule, is equal to or less than pH 7.0. The invention also relates to pharmaceutical dosage forms or precursors thereof, which can be produced using the inventive method.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: February 4, 2014
    Assignee: Evonik Roehm GmbH
    Inventors: Hans-Ulrich Petereit, Christian Meier, Andreas Gryczke
  • Patent number: 8568778
    Abstract: The invention relates to an oral, multiparticulate form of administration, comprising pellets in the size ranging from 50 to 2500 $g(m)m which are substantially constituted of a) an inner matrix layer containing nanoparticles that contain a nucleic acid active ingredient and being embedded in a matrix of a polymer having a mucoadhesive effect, and b) an outer film coating, substantially consisting of an anionic polymer or copolymer that is optionally formulated with pharmaceutically conventional adjuvants, especially emollients.
    Type: Grant
    Filed: November 5, 2005
    Date of Patent: October 29, 2013
    Assignee: Evonik Röhm GmbH
    Inventors: Rosario Lizio, Hans-Ulrich Petereit, Dave Trupti, Michael Gottschalk