Patents by Inventor Leonard Marsh

Leonard Marsh 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).

  • UV purification of air and water in dental operatories
    Patent number: 6268607
    Abstract: A dental office is provided with a system to purify air and/or water delivered to the operatory. Purification is by UV-C light applied to the utilities as they are transported from supply to delivery sites. Ideally, the system includes separate devices structured and arranged to effect purification of the ambient air circulating within the operatory; the water supplied to the operatory and the water delivered to and through dental hand pieces in connection with a procedure.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: July 31, 2001
    Assignee: DCI International, Inc.
    Inventors: Leonard Marsh, Michael Radicone, Richard W. Hanson