Patents by Inventor Rolf Neidhardt

Rolf Neidhardt 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).

  • Preparation of an active substance solution which can be sterilized by filtration
    Patent number: 5432196
    Abstract: A process for preparing an aqueous active substance solution which can be sterilized by filtration entails mixing anipamil hydrochloride with a phospholipid in the ratio of from 1:2 to 2:1 by weight, converting the resulting mixture into a gel by adding water at elevated temperature, and subsequently adding water to the gel at elevated temperature until the active substance is present in the required concentration.
    Type: Grant
    Filed: January 13, 1994
    Date of Patent: July 11, 1995
    Assignee: Knoll AG
    Inventors: Joerg Rosenberg, Rolf Neidhardt, Guenter Blaich