Patents by Inventor Robert W. Kalayjian

Robert W. Kalayjian 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).

  • Acoustic earpiece
    Patent number: 4724922
    Abstract: An improved acoustic earpiece of the type used to transmit sound mechanically from a sound source to the ear drum of a listener is disclosed herein. The acoustic earpiece includes a tube and a resilient element surrounding one end thereof comprising an open cell resilient foam with a slow compression recovery rate and a fully compressed diameter of less than the diameter of the human ear canal.
    Type: Grant
    Filed: July 24, 1986
    Date of Patent: February 16, 1988
    Inventor: Robert W. Kalayjian
  • Endotracheal inhalator
    Patent number: D307183
    Type: Grant
    Filed: June 23, 1987
    Date of Patent: April 10, 1990
    Inventor: Robert W. Kalayjian