Patents by Inventor Stephen J. Rock

Stephen J. Rock 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).

  • Publication number: 20240138994
    Abstract: An orthopaedic knee prosthesis includes a tibial insert and a femoral component configured to articulate on the tibial insert. The tibial insert includes a lateral articular surface and medial articular surface that is asymmetrically shaped relative to the lateral articular surface. The medial articular surface is shaped to reduce anterior translation of a medial condyle of the femoral component, while the lateral articular surface is shaped to allow a lateral condyle of the femoral component to pivot, relative to the medial articular surface, along an arcuate articular path. Additionally, one or both condyles of the femoral component may include a femoral articular surface having a curved femoral surface section defined by a continuously decreasing radius of curvature.
    Type: Application
    Filed: January 9, 2024
    Publication date: May 2, 2024
    Inventors: Mark A. Heldreth, Travis D. Bennett, Amitkumar M. Mane, Michael J. Rock, Thomas E. Wogoman, Stephen E. White
  • Patent number: 5555481
    Abstract: A method of producing parts from two distinct classes of materials utilizes depositing a first class material and a second class material on a deposition surface where the first class material forms a three-dimensional shape defined by the interface of the first class material and the second class material. The first class material is unified and the second class material is removed therefrom to form a three-dimensional part of the first class material. Preferably, the first and second class materials are deposited in layers.
    Type: Grant
    Filed: August 1, 1995
    Date of Patent: September 10, 1996
    Assignee: Rensselaer Polytechnic Institute
    Inventors: Stephen J. Rock, Charles R. Gilman