Patents by Inventor Elizabeth H. Chen

Elizabeth H. Chen 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).

  • Functional and biocompatible intervertebral disc spacer containing elastomeric material of varying hardness
    Patent number: 5545229
    Abstract: The construction and manufacturing technique for a functional biocompatible intervertebral disc spacer is described. This device is useful for a replacement for a degenerated disc in certain treatments of back pain and spinal disease. The disc spacer possesses mechanical properties akin to those of the normal disc and will preserve normal functions of the spinal motion segment. The device achieves the desired properties by varying the hardness of the elastomeric material in its nucleus and annulus.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: August 13, 1996
    Assignees: University of Medicine and Dentistry of NJ, Rutgers University
    Inventors: John R. Parsons, Casey K. Lee, Noshir A. Langrana, Alastair J. Clemow, Elizabeth H. Chen, Monica V. Hawkins
  • Functional and biocompatible intervertebral disc spacer containing elastomeric material of varying hardness
    Patent number: 5171281
    Abstract: The construction and manufacturing technique for a functional biocompatible intervertebral disc spacer is described. This device is useful for a replacement for a degenerated disc in certain treatments of back pain and spinal disease. The disc spacer possesses mechanical properties skin to those of the normal disc and will preserve normal functions of the spinal motion segment. The device achieves the desired properties by varying the hardness of the elastomeric material in its nucleus and annulus.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: December 15, 1992
    Assignees: University of Medicine & Dentistry of New Jersey, Rutgers University
    Inventors: John R. Parsons, Casey K. Lee, Noshir A. Langrana, Alastair J. Clemow, Elizabeth H. Chen
  • Functional and biocompatible intervertebral disc spacer
    Patent number: 4911718
    Abstract: The construction and manufacturing technique for a functional biocompatible intervertebral disc spacer is described. This device is useful for a replacement for a degenerated disc in certain treatments of back pain and spinal disease. The disc spacer possesses mechanical properties akin to those of the normal disc and will preserve normal functions of the spinal motion segment. The device achieves the desired properties by providing reinforcing fibers of appropriate orientation and number within an elastomeric matrix.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: March 27, 1990
    Assignees: University of Medicine & Dentistry of N.J., Rutgers University, Johnson & Johnson
    Inventors: Casey K. Lee, Noshir A. Langrana, Harold Alexander, Alastair J. Clemow, Elizabeth H. Chen, John R. Parsons
  • Permanent ligament prosthesis
    Patent number: 4773910
    Abstract: A cruciate ligament prosthesis constructed with two separately tensionable strands. Each strand is composed of a plurality of fine polyolefin filaments, each filament having a diameter of from 25 to 50 microns and the breaking strength of each strand is at least 1000 pounds.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: September 27, 1988
    Assignee: Johnson & Johnson Consumer Products, Inc.
    Inventors: Elizabeth H. Chen, Alastair J. T. Clemow, Steven W. Arms, Malcolm H. Pope, Per Renstrom