Patents by Inventor Jeffrey S. Held

Jeffrey S. Held 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).

  • Apparatus for rendering medical materials safe
    Patent number: 5609820
    Abstract: Infectious medical materials are rendered harmless by heating heterogeneous medical materials having wet and dry portions with a radio-frequency electric field. The medical materials may be comminuted prior to heating. The medical materials are exposed to the radio-frequency electric field in order to heat the medical materials. The medical materials may include sorted medical or veterinary waste which after heat treatment may be recycled.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 11, 1997
    Inventors: Jack E. Bridges, Guggilam C. Sresty, Jeffrey S. Held, James W. Sharp, Thomas J. Bajzek
  • Method and apparatus for rendering medical materials safe
    Patent number: 5543111
    Abstract: Infectious medical materials are rendered harmless by heating heterogeneous medical materials having wet and dry portions with a radio-frequency electric field. The medical materials may be comminuted prior to heating. The medical materials are exposed to the radio-frequency electric field in order to heat the medical materials. The medical materials may include sorted medical or veterinary waste which after heat treatment may be recycled.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: August 6, 1996
    Assignee: IIT Research Institute
    Inventors: Jack E. Bridges, Guggilam C. Sresty, Jeffrey S. Held, James W. Sharp, Thomas J. Bajzek
  • Method and apparatus for rendering medical materials safe
    Patent number: 5523052
    Abstract: Infectious medical materials are rendered harmless by heating heterogeneous medical materials having wet and dry portions with a radio-frequency electric field. The medical materials are exposed to the radio-frequency electric field in order to heat the medical materials to inactivate microorganisms thereon. The medical materials are then irradiated with gamma radiation to inactivate microorganisms remaining viable thereon after application of the radio-frequency electric field.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: June 4, 1996
    Assignee: Stericycle, Inc.
    Inventors: Jack E. Bridges, Guggilam C. Sresty, Jeffrey S. Held, James W. Sharp, Thomas J. Bajzek