Patents by Inventor Ingrid Wielop

Ingrid Wielop 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).

  • Method for making high bulk density crystalline 3-cyano-2-morpholino-5-(pyrid-4yl)-pyridine
    Patent number: 5281705
    Abstract: A method for preparing high bulk density crystalline 3-cyano-2-morpholino-5-(pyrid-4-yl)-pyridine which comprises precipitating a high bulk density crystalline 3-cyano-2-morpholino-5-(pyrid-4-yl)-pyridine from a starting material that is(a) a solution in an inorganic or organic acid, and precipitating with a base, or(b) a solution in a chlorinated hydrocarbon, and precipitating with an aliphatic hydrocarbon, or(c) from an aliphatic ester of an aliphatic carboxylic acid and an aliphatic alcohol.The compact, crystalline 3-cyano-2-morpholino-5-(pyrid-4-yl)-pyridine, so obtained, has a bulk density of from about 220 to about 360 g/l and is most suitable for pharmaceutical preparations.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: January 25, 1994
    Assignee: Arzneimittelwerk Dresden GmbH
    Inventors: Volker Hagen, Gunter Reck, Brigitte Gentsch, Hans-Joachim Heidrich, Hans-Joachim Jansch, Ingrid Wielop, Dieter Lohmann
  • High bulk density, crystalline 3-cyano-2-morpholino-5-pyrid-4-yl)-pyridine
    Patent number: 5204464
    Abstract: A method for preparing high bulk density crystalline 3-cyano-2-morpholino-5-(pyrid-4-yl)-pyridine which comprises precipitating a high bulk density crystaline 3-cyano-2-morpholino-5-(pyrid-4-yl)-pyridine from a starting material that is(a) a solution in an inorganic or organic acid, and precipitating with a base, or(b) a solution in a chlorinated hydrocarbon, and precipitating with an aliphatic hydrocarbon, or(c) from an aliphatic ester of an aliphatic carboxylic acid and an aliphatic alcohol.The compact, crystalline 3-cyano-2-morpholino-5-(pyrid-4-yl)-pyridine, so obtained, has a bulk density of from about 220 to about 360 g/l and is most suitable for pharmaceutical preparations.
    Type: Grant
    Filed: March 7, 1991
    Date of Patent: April 20, 1993
    Assignee: Arzneimittelwerk Dresden GmbH
    Inventors: Volker Hagen, Gunter Reck, Brigitte Gentsch, Hans-Joachim Heidrich, Hans-Joachim Jansch, Ingrid Wielop, Dieter Lohmann