Patents by Inventor Stefan Kettelhoit

Stefan Kettelhoit 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).

  • Osmotic medicament releasing system
    Patent number: 6294201
    Abstract: This invention relates to an orally administered osmotic drug release system that consists of a shell and a core containing a pharmaceutically active substance, as well as a process for its production. The invention relates further to an osmotic drug release system for use as a drug in human beings and animals, as well as the use of the osmotic drug release system in the production of a drug for the treatment and/or prevention of illnesses in human beings and animals.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: September 25, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Stefan Kettelhoit, Ranga-Rao Kanikanti, Erich Brendel, Claus Weisemann, Ernst Chantraine, Michael Eisele, Patrick Bosché
  • Medicament formulation with a controlled release of an active agent
    Patent number: 6270799
    Abstract: The invention relates to drug formulations which comprise 1-cyclopropyl-7-([S,S]-2,8-diazabicyclo[4.3.0]non-8-yl)-6-fluoro-1,4-dihydro-8-methoxy-4-oxo-3-quino-lonecarboxylic acid and/or pharmaceutically tolerable salts thereof and/or hydrates thereof as active compound which release the active compound they contain at a defined release rate.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: August 7, 2001
    Assignee: Bayer Aktiengesellscahft
    Inventors: Hans-Martin Siefert, Patrick Bosché, Heino Stass, Stefan Kettelhoit, Tobias Laich
  • Process for the preparation of medicament formulations with controlled release
    Patent number: 5707655
    Abstract: The invention relates to a special process for the preparation of stable, solid medicament formulations of high bioavailability and with controlled release comprising sparingly soluble active compounds and polymeric auxiliaries, and to the formulations thus prepared.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: January 13, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Venkata-Rangarao Kanikanti, Stefan Kettelhoit, Peter Kurka, Gunther Penners, Peter Serno