Patents by Inventor Roger Feldhoff

Roger Feldhoff 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).

  • Process and device for recognizing organic substances
    Patent number: 6262419
    Abstract: In a process for recognizing organic substances in solids by measuring the spectram of the radiation which is reflected or transmitted, radiation with a wavelength between 2-4 &mgr;m is used and, for radiation of solids, unmodulated radiation is used. The radiation source should have an output of at least 50 W and the distance between the illumination optics from the solid being investigated should be at least 10 cm. Recognition is based on absorption bands of the extended oscillations of C—H bonds and sometimes the presence of absorption bands of N—H bonds. Broad band radiation is preferable for radiation of the solids, and the reflected or transmitted radiation is directed through a narrow band filter with adjustable transmission frequency. This can be advantageously formed with an acousto-optical filter.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: July 17, 2001
    Assignee: Institut fuer Chemo-und Biosensorik Muenster E.V.
    Inventors: Thomas Huth-Fehre, Frank Kowol, Roger Feldhoff, Thomas Kantimm