Patents by Inventor Raymond J. Biehl

Raymond J. Biehl 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).

  • Novel controlled release formulations of tetracycline compounds
    Patent number: 4837030
    Abstract: Pharmaceutical compositions comprising spherical granules including thereon or therein a 7- or 9-akylamino-6-deoxy-6-demethyltetracycline or an acid-addition salt thereof blended with at least one excipient are adapted to control the rate of drug release in the stomach and in the intenstine in order not to produce nausea or dizziness upon oral administration during antibacterial therapy.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: June 6, 1989
    Assignee: American Cyanamid Company
    Inventors: Joseph J. Valorose, Jr., Raymond J. Biehl, Nitin V. Sheth, Walter A. Strathy, Michael K. Doelling
  • Tablet coating apparatus
    Patent number: 4217851
    Abstract: Apparatus useful for spray coating discrete particles, such as pharmaceutical tablets, with liquid coating compositions which are essentially free of organic solvents, the apparatus having at least three spaced spray nozzles mounted on a spray manifold having a conical surface design which is located within a vertically disposed two-zone coating chamber, having a gas inlet at the chamber base adapted to project the particles to be coated through a coating zone for recirculation through a drying zone.
    Type: Grant
    Filed: August 27, 1979
    Date of Patent: August 19, 1980
    Assignee: American Cyanamid Company
    Inventors: Raymond J. Biehl, William H. Marlow