Patents by Inventor Kenji Kuratani

Kenji Kuratani 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).

  • Long-lasting release nifedipine preparation
    Patent number: 5861173
    Abstract: This invention provides a long-lasting release solid nifedipine preparation which exhibits clinically sufficient effect when administered once per day. A press coated tablet whose core and shell each contains nifedipine, the dissolution rate of nifedipine from said tablet being (a) in the dissolution test using a sinker according to method 2 of the dissolution test method as prescribed by the Pharmacopoeia of Japan, after 2 hours 10-40% after 4 hours 30-65% after 6 hours at least 55%, and (b) in the dissolution test according to the disintegration test method as prescribed by the Pharmacopoeia of Japan, after 3 hours 20-45% after 4 hours 30-65%.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: January 19, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Takaaki Nishioka, Kenji Kuratani, Haruo Kanasaki, Helmut Luchtenberg, Ulrich Tenter, Andreas Ohm