Patents by Inventor Dietrich Schacht

Dietrich Schacht 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).

  • Publication number: 20050226919
    Abstract: This invention provides a device containing a compound of formula (I), wherein R represents a saturated or unsaturated C2-7 aliphatic acyl group optionally substituted by one or more halogen atoms, a hydroxy group, a C1-6 alkoxy group, a carboxyl group, a C2-7 alkoxycarbonyl group, a 5 to 7-membered cycloalkyl group, a phenyl or naphthyl group; a C2-6 hydroxyalkyl group; an aliphatic acyloxyalkyl group having a C2-7 acyl group and a C1-6 alkyl group; a C1-6 alkyl group substituted by a C1-6 alkoxy group, a carboxyl group, a C2-7 alkoxycarbonyl group, a C2-7 alkoxycarbonyl group substituted by a phenyl or naphthyl group, a carbamoyl group, a mono- or di-(C1-6 alkyl)-substituted carbamoyl group or a cyano group; a benzoyl or naphthoyl group optionally substituted by one or more halogen atoms; a furoyl group or a pyridylcarbonyl group; and R1 represents a C1-6 alkyl group optionally substituted by one or more halogen atoms, a phenyl or a naphthyl group; the carbon atom marked “*” represents a carbon atom in (R)-
    Type: Application
    Filed: September 12, 2002
    Publication date: October 13, 2005
    Inventors: Frank Dressen, Dietrich Schacht, Hans-Michael Wolff
  • Publication number: 20050079206
    Abstract: An improved Transdermal Delivery System (TDS) comprising a backing layer inert to the components of the matrix, a self-adhesive matrix containing rotigotine and a protective foil or sheet to be removed prior to use, characterized in that the self-adhesive matrix consists of a solid or semi-solid semi-permeable polymer (1) wherein rotigotine in its free base form has been incorporated, (2) which is saturated with rotigotine and contains said rotigotine as a multitude of microreservoirs within the matrix, (3) which is highly permeable for the free base of rotigotine, (4) which is impermeable for the protonated form of rotigotine, (5) wherein the maximum diameter of the microreservoirs is less than the thickness of the matrix. is provided. Said TDS provides for enhanced flux of rotigotine across the TDS/skin interface.
    Type: Application
    Filed: July 22, 2003
    Publication date: April 14, 2005
    Inventors: Dietrich Schacht, Mike Hannay, Hans-Michael Wolff
  • Patent number: 5817697
    Abstract: The pharmaceutical use of nitroglycerin, which is also designated as glycerol trinitrate or, chemically, as 1,2,3-propanetriol trinitrate, in a transdermal application form prevents undesired labour in pregnant mammals. The pharmaceutical use prevents premature labour.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: October 6, 1998
    Assignee: Schwarz Pharma AG
    Inventors: Hans-Michael Wolff, Dietrich Schacht, Martin Feelisch, Bruce Ramsay, John Francis Martin, Christoph Christopher Lees, Adam Julian De Belder
  • Patent number: 5603948
    Abstract: A method of preparing a patch for the controlled release of readily available volatile active substances to the skin is disclosed. The patch comprises a back layer, and, bonded to the back layer, a water-insoluble adhesive film consisting of a pressure-sensitive fusion adhesive, plus a detachable film covering the adhesive film. The pressure-sensitive fusion adhesive contains a triple-block copolymer of polystyrene block copoly(ethylene/butylene) block polystyrene at a concentration of 10 to 80% by wt., and an active substance at a concentration of 2.5 to 25% by weight, which is a readily volatile liquid at the temperature at which the adhesive bonds.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 18, 1997
    Assignee: Schwarz Pharma AG
    Inventors: Hans P. Merkle, Klaus Nagels, Dietrich Schacht, Hans-Michael Wolff
  • Patent number: 5527536
    Abstract: The invention concerns a patch for the controlled release of readily available volatile active substances to the skin, the patch comprising a back layer and, bonded to it, a water-insoluble adhesive film consisting of a pressure-sensitive fusion adhesive, plus a detachable film covering the adhesive film. The patch is characterized in that the pressure-sensitive fusion adhesive contains a triple-block copolymer of polystyrene block copoly(ethylene/butylene) block polystyrene (SEBS) at a concentration of 10 to 80% by wt., and an active substance which, at the temperature at which the adhesive bonds, is a readily volatile liquid, and which is present at a concentration of 2.5 to 25% by wt.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: June 18, 1996
    Assignee: Schwarz Pharma AG
    Inventors: Hans P. Merkle, Klaus Nagels, Dietrich Schacht, Hans-Michael Wolff