Patents by Inventor Manfred Weigert

Manfred Weigert 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).

  • Patent number: 4416812
    Abstract: A tissue thromboplastin preparation which is sensitive to coagulation factor VII, is prepared from acetone dry powder mammalian tissue, by extraction with a salt solution containing 1 to 20 mmol/1 of calcium ions and, if desired, a surface active agent, after which the extract maybe dried.
    Type: Grant
    Filed: December 1, 1982
    Date of Patent: November 22, 1983
    Assignee: Boehringer Mannheim GmbH
    Inventors: Udo Becker, Eugen Schaich, Manfred Weigert