Patents by Inventor Daniel E. Purvis

Daniel E. Purvis 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).

  • Intracoronally supported pontic
    Patent number: 6050820
    Abstract: The pontic support structure comprises a matrix folded to form a horizontal top portion and a vertical bottom portion. Opposed wings extend laterally on either side of the horizontal top portion. Opposed wings extend laterally on either side of the vertical bottom portion. The various wings engage corresponding slots formed in the existing adjacent teeth.
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: April 18, 2000
    Assignee: Eastflex Corp.
    Inventors: Maris J. Lans, Daniel E. Purvis
  • Frame for holding dental prosthesis press
    Patent number: 5962038
    Abstract: A frame is provided for firmly securing a dental press holding one or more flasks during preparation of dental prostheses. The frame securely locks the press in position and facilitates tightening of the press to exert pressure on the dental flasks as well as release of the pressure once the procedure is completed. Use of the frame permits a single technician to tighten and loosen the press with a single hand and allows greater tightening of the press to exclude voids and pockets in the finished prosthesis.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: October 5, 1999
    Assignee: Eastflex Corp.
    Inventors: Daniel E. Purvis, Maris J. Lans
  • Intracoronally supported pontic
    Patent number: 5888068
    Abstract: The invention is directed to an intracoronally supported pontic which is uniquely anchored between two existing teeth by means of two wings which engage within slots or indentations prepared in the two existing teeth. The engaging wings are disposed on either side of a matrix around which the pontic is formed and which supports the pontic when positioned between the existing teeth. The invention further concerns the method of forming the pontic around the supporting matrix and installing it in the patient's mouth.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: March 30, 1999
    Assignee: Eastflex Corp.
    Inventors: Maris J. Lans, Daniel E. Purvis