Patents by Inventor Jan-Erik Lofroth

Jan-Erik Lofroth 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: 7959947
    Abstract: A film coating composition suitable for use in coating pharmaceutical formulations comprising a) an acrylic polymer dispersion, e.g. an ethylacrylate/methylmethacrylate copolymer such as Eudragit NE30D, b) a surfactant, c) sodium stearyl fumarate, and d) a water-containing liquid useful for the achievement of controlled release from pharmaceutical formulations such as tablets, pellets, etc.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: June 14, 2011
    Assignee: AstraZeneca AB
    Inventors: Arne Hölzer, Jan-Erik Löfroth, Staffan Schantz
  • Publication number: 20100291217
    Abstract: The present invention relates to pharmaceutical compositions for sustained release comprising a water soluble salt of the HMG-CoA reductase inhibitor fluvastatin as active ingredient, said composition being selected from the group comprising matrix formulations, diffusion-controlled membrane coated formulations; and combinations thereof.
    Type: Application
    Filed: June 8, 2010
    Publication date: November 18, 2010
    Inventors: Jan-Erik Löfroth, Jonas Ödman
  • Publication number: 20100291216
    Abstract: The present invention relates to pharmaceutical compositions for sustained release comprising a water soluble salt of the HMG-CoA reductase inhibitor fluvastatin as active ingredient, said composition being selected from the group comprising matrix formulations, diffusion-controlled membrane coated formulations; and combinations thereof.
    Type: Application
    Filed: June 8, 2010
    Publication date: November 18, 2010
    Inventors: Jan-Erik Löfroth, Jonas Ödman
  • Patent number: 7815938
    Abstract: A film coating composition suitable for use in coating pharmaceutical formulations to provide modified release comprising a dispersion which includes: a) an acrylic polymer, b) a vinyl acetate polymer, and c) a water-containing liquid. The film coat is useful for the achievement of modified release from pharmaceutical formulations such as tablets, pellets, etc.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: October 19, 2010
    Assignee: AstraZeneca AB
    Inventors: Jan-Erik Löfroth, Staffan Schantz, Anders Welin, Lars Johan Pontus de Verdier Hjärtstam
  • Publication number: 20080095853
    Abstract: An oral solid pharmaceutical dosage form comprising an acid sensitive proton pump inhibitor (PPI) as single active drug, releasing the PPI in two separate pulses, one immediate and one delayed. The PPI is formulated into a core material in the form of pellets, which are coated i.a. with a combination of a delayed release modifying layer and a lag time controlling layer. The pellets are further provided with an enteric coating layer. The application also relates to processes for preparing the dosage forms as well as their use in the treatment of gastrointestinal diseases.
    Type: Application
    Filed: November 2, 2005
    Publication date: April 24, 2008
    Inventors: Niclas Clemmensen, Jan-Erik Lofroth, Katrin Walter, Peter Wang, Martin Wikberg
  • Publication number: 20080003281
    Abstract: An oral solid pharmaceutical dosage form comprising an acid sensitive proton pump inhibitor (PPI) as single active drug, releasing the PPI in two separate pulses, one immediate and one delayed. The PPI is formulated into a core material in the form of tablets, which are coated i.a. with a combination of a delay release modifying layer and a lag time controlling layer that together achieves beneficial release properties. The tablets are further provided with an enteric coating layer. The application also relates to processes for preparing the dosage forms as well as their use in the treatment of gastrointestinal diseases.
    Type: Application
    Filed: November 2, 2005
    Publication date: January 3, 2008
    Applicant: ASTRAZENECA AB
    Inventors: Niclas Clemmensen, Jan-Erik Lofroth, Henrik Sahlen, Katrin Walter, Peter Wang, Martin Wikberg
  • Publication number: 20070031493
    Abstract: The present invention relates to pharmaceutical compositions for sustained release comprising a water soluble salt of the HMG-CoA reductase inhibitor fluvastatin as active ingredient, said composition being selected from the group comprising matrix formulations, diffusion-controlled membrane coated formulations; and combinations thereof.
    Type: Application
    Filed: October 10, 2006
    Publication date: February 8, 2007
    Inventors: Jan-Erik Lofroth, Jones Odman
  • Publication number: 20050089574
    Abstract: A film coating composition suitable for use in coating pharmaceutical formulations to provide modified release comprising a dispersion which includes: a) an acrylic polymer, b) a vinyl acetate polymer, and c) a water-containing liquid. The film coat is useful for the achievement of modified release from pharmaceutical formulations such as tablets, pellets, etc.
    Type: Application
    Filed: September 16, 2004
    Publication date: April 28, 2005
    Inventors: Jan-Erik Lofroth, Staffan Schantz, Anders Welin, Lars, Johan, , Hjartstam
  • Patent number: 6827947
    Abstract: A film coating composition suitable for use in coating pharmaceutical formulations to provide modified release comprising a dispersion which includes: a) an acrylic polymer, b) a vinyl acetate polymer, and c) a water-containing liquid. The film coat is useful for the achievement of modified release from pharmaceutical formulations such as tablets, pellets, etc.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: December 7, 2004
    Assignee: AstraZeneca AB
    Inventors: Jan-Erik Löfroth, Staffan Schantz, Anders Welin, Lars Johan Pontus de Verdier Hjartstam
  • Publication number: 20040235727
    Abstract: The present invention provides, for example, a pharmaceutical formulation for oral administration comprising H 376/95, sodium dodecyl sulphate (SDS) and a polymer selected from the group comprising hydroxypropyl methylcellulose (HPMC), hydroxyethyl cellulose (HEC) and polyoxyethylene oxide (PEO), a process for the preparation of such a formulation and the medical use of the formulation in the treatment of thromboembolism.
    Type: Application
    Filed: March 19, 2004
    Publication date: November 25, 2004
    Inventors: Susanna Abrahmsen Alami, Anette Larsson, Jan-Erik Lofroth, Adam Rosinski
  • Publication number: 20040058001
    Abstract: A film coating composition suitable for use in coating pharmaceutical formulations comprising a) an acrylic polymer dispersion, e.g. an ethylacrylate/methylmethacrylate copolymer such as Eudragit NE30D, b) a surfactant, c) sodium stearyl fumarate, and d) a water-containing liquid useful for the achievement of controlled release from pharmaceutical formulations such as tablets, pellets, etc.
    Type: Application
    Filed: July 11, 2003
    Publication date: March 25, 2004
    Inventors: Arne Holzer, Jan-Erik Lofroth, Staffan Schantz
  • Publication number: 20040022850
    Abstract: A pharmaceutical modified release formulation comprising a pharmacologically active substance and a modified water-soluble polysaccharide, which modified water-soluble polysaccharide is obtainable by: a) forming a precipitate of a water-soluble polysaccharide by contacting a solution of the water-soluble polysaccharide with a solvent in which the polysaccharide is poorly soluble or insoluble; or b) milling a water-soluble polysaccharide. The modified water-soluble polysaccharides provide modified release formulations with high tablet hardness. Also claimed are a process for preparing the modified release formulation, and the use of the modified water-soluble polysaccharides as an excipient in a pharmaceutical formulation.
    Type: Application
    Filed: July 14, 2003
    Publication date: February 5, 2004
    Inventors: Marianne Eklund, Jan-Erik Lofroth, Urban Skantze
  • Patent number: 6673365
    Abstract: A new pharmaceutical formulation comprising the thrombin inhibitor HOOC—CH2—(R)-Cgl-Aze-Pab in combination with medium chain glycerides, a process for the preparation of such a pharmaceutical formulation, the use of a such formulation in the treatment of thromboembolism as well as a method of treating a patient in need of such a treatment by using said formulation.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: January 6, 2004
    Assignee: Astra Aktiebolag
    Inventors: Jan-Erik Löfroth, Lennart Lindfors, Anna-Lena Ungell
  • Publication number: 20030194440
    Abstract: The present invention relates to pharmaceutical compositions for sustained release comprising a water soluble salt of the HMG-CoA reductase inhibitor fluvastatin as active ingredient, said composition being selected from the group comprising matrix formulations, diffusion-controlled membrane coated formulations; and combinations thereof.
    Type: Application
    Filed: October 24, 1997
    Publication date: October 16, 2003
    Inventors: JAN-ERIK LOFROTH, JONAS ODMAN
  • Patent number: 5795896
    Abstract: A new pharmaceutical formulation comprising the thrombin inhibitor HOOC--CH.sub.2 --(R)-Cgl-Aze-Pab in combination with one or more absorption enhancing agents, a process for the preparation of such a pharmacutical formulation, the use of such a formulation in the treatment of thromboembolism as well as a method of treating a patient in need of antithrombotic treatment and thromboembolism by using said formulation.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: August 18, 1998
    Assignee: Astra Aktiebolag
    Inventors: Jan-Erik Lofroth, Anna-Lena Ungell
  • Patent number: 5780062
    Abstract: The present invention is concerned with the formation of small particles of organic compounds by precipitating said organic compounds in an aqueous medium containing polymer/amphiphile complexes. The process is preferably used to prepare a readily soluble pharmaceutically active compound.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: July 14, 1998
    Assignee: The Ohio State University Research Foundation
    Inventors: Sylvan Frank, Jan-Erik Lofroth, Levon Bostanian