Patents by Inventor Frederick J. Cameron

Frederick J. Cameron 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).

  • Applicator for dental material
    Patent number: 4993948
    Abstract: For free-hand use by a dentist, there is provided a cylinder containing tooth filling material urged out of the cylinder by spring pressure, sometimes augmented by thumb pressure against the end of a piston rod in the cylinder. Flow of the material out of the cylinder through a removable and replaceable flexible curved nozzle is under control of a valve located to be readily manipulated between open and closed positions by the same hand of the dentist. Preferably the filling material is in a discrete capsule containing enough filling material for several teeth and easily placed in and removed from the cylinder.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: February 19, 1991
    Inventors: Frederick J. Cameron, Carl L. Cranke
  • Portable seat cushion
    Patent number: D441587
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: May 8, 2001
    Inventor: Frederick J. Cameron
  • Bucket seat cushion
    Patent number: D452404
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: December 25, 2001
    Inventor: Frederick J. Cameron