Patents by Inventor Heribert Harwalik

Heribert Harwalik 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).

  • Retard form of pharmaceuticals with insoluble porous diffusion coatings
    Patent number: 4578264
    Abstract: This invention relates to a pharmaceutical dosage unit composition consisting essentially of a gelatin capsule containing (1) a disintegrating core comprising clonidine, said disintegrating core having a readily water-soluble coating, and (2) a plurality of non-disintegrating cores comprising clonidine, said non-disintegrating cores having a coating consisting of from 20 to 90 percent by weight of a water-insoluble film former and from 10 to 80 percent by weight of a water-soluble polymer, the diameter of each of the disintegrating and non-disintegrating cores being at least about 5 mm.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: March 25, 1986
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Herbert Stricker, Bernhard Freund, Heribert Harwalik, Karl L. Rominger, Siegfried Darda, Volkmar Haselbarth, Dietrich Arndts, Wolf D. Bechtel, Gerhard Bozler, Rolf Brickl, Peter Gruber
  • Retard form of pharmaceuticals with insoluble porous diffusion coatings
    Patent number: 4459279
    Abstract: A pharmaceutical dosage unit retard form having a constant, pH-independent release rate of active ingredient, consisting of a core comprising an active ingredient, and a semi-permeable diffusion coating over the core, where the coating consists of a water-insoluble film-former, a water-soluble polymer and eventually an acid-insoluble polymer incorporated therein.
    Type: Grant
    Filed: August 18, 1982
    Date of Patent: July 10, 1984
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Herbert Stricker, Bernhard Freund, Heribert Harwalik, Karl L. Rominger, Siegfried Darda, Volkmar Haselbarth, Dietrich Arndts, Wolf D. Bechtel, Gerhard Bozler, Rolf Brickl, Peter Gruber
  • Retard form of pharmaceuticals with insoluble porous diffusion coatings
    Patent number: 4361546
    Abstract: A pharmaceutical dosage unit retard form having a constant, pH-independent release rate of active ingredient, consisting of a core comprising an active ingredient, and a semi-permeable diffusion coating over the core, were the coating consists of a water-insoluble film-former, a water-soluble polymer and eventually an acid-insoluble polymer incorporated therein.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: November 30, 1982
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Herbert Stricker, Bernhard Freund, Heribert Harwalik, Karl L. Rominger, Siegfried Darda, Volkmar Haselbarth, Dietrich Arndts, Wolf D. Bechtel, Gerhard Bozler, Rolf Brickl, Peter Gruber