Patents by Inventor William C. Welch

William C. Welch 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).

  • Patent number: 7597695
    Abstract: Instruments and methods for spinal stabilization are disclosed. In preferred embodiments, the invention provides greater stabilization of vertebral bodies through methods including combinations of external fixation systems and intervertebral implants to provide greater fusion stability, greater motion segment stability, faster fusion, reduced pain, reduced chance of migration, reduced chance of subsidence, etc.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: October 6, 2009
    Assignees: Zimmer Spine, Inc., University of Pittsburgh of the Commonwealth System of Higher Education
    Inventors: Daniel G. Schmiel, Rodney L. Houfburg, Daniel D. McPhillips, William C. Welch
  • Patent number: 7033392
    Abstract: Instruments and methods for spinal stabilization are disclosed. In preferred embodiments, the invention provides greater stabilization of vertebral bodies through methods including combinations of external fixation systems and intervertebral implants to provide greater fusion stability, greater motion segment stability, faster fusion, reduced pain, reduced chance of migration, reduced chance of subsidence, etc.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: April 25, 2006
    Assignee: Zimmer Spine, Inc.
    Inventors: Daniel G. Schmiel, Rodney L. Houfburg, Daniel D. McPhillips, William C. Welch
  • Patent number: 6626905
    Abstract: Instruments and methods for spinal stabilization are disclosed. In preferred embodiments, the invention provides greater stabilization of vertebral bodies through methods including combinations of bilateral external fixation systems and intervertebral implants to provide greater fusion stability, greater motion segment stability, faster fusion, reduced pain, reduced chance of migration, reduced chance of subsidence, etc.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: September 30, 2003
    Assignees: Sulzer Spine-Tech Inc., University of Pittsburgh of the Commonwealth System of Higher Education
    Inventors: Daniel G. Schmiel, Rodney L. Houfburg, Daniel D. McPhillips, William C. Welch
  • Publication number: 20020026192
    Abstract: Instruments and methods for spinal stabilization are disclosed. In preferred embodiments, the invention provides greater stabilization of vertebral bodies through methods including combinations of external fixation systems and intervertebral implants to provide greater fusion stability, greater motion segment stability, faster fusion, reduced pain, reduced chance of migration, reduced chance of subsidence, etc.
    Type: Application
    Filed: August 2, 2001
    Publication date: February 28, 2002
    Inventors: Daniel G. Schmiel, Rodney L. Houfburg, Daniel D. McPhillips, William C. Welch
  • Patent number: 5931517
    Abstract: A new tool for cleaning out unwanted debris from the bottom of trenches of the type having at the top portion of its two handles (2) rubber sheathing (1) for better gripping. The handles (2) of the tool extend the entire length of the tool. At the bottom of the handles (2) are attached two scooper trays (4). The handles (2) are attached to each other by way of a fulcrum provided by a bolt (3) that passes through each handle (2) and secured by a nut and washers (3). The tool functions by way of an operator pulling outward on the rubber sheathed (1) portion of the handles (2) to cause an opening action at the bottom of the tool whereas the trays (4) move outward from each other. Once the trays (4) are positioned around the debris to be removed, the operator moves the rubber sheathed (1) portion of the handles (2) back toward each other causing the same action on the opposite end with the result being the trays (4) moving inward toward each other and slicing under the debris to be removed.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: August 3, 1999
    Assignee: William C. Welch
    Inventor: William C. Welch
  • Patent number: 5437898
    Abstract: A print and fusion process is used to fabricate ceramic elements that are subsequently utilized to generate a composite including a fibrous mat and discrete ceramic elements. The composite may include a substrate and a flexible or rigid non-ceramic composition between the discrete ceramic elements and/or the substrate. A ceramic ink preferably partially penetrates the fibrous mat to form the discrete elements or a continuous layer.
    Type: Grant
    Filed: October 24, 1994
    Date of Patent: August 1, 1995
    Assignee: Armstrong World Industries, Inc.
    Inventors: John S. Forry, Thomas C. Simonton, William C. Welch, Jerome D. Wisnosky
  • Patent number: 5418041
    Abstract: A ceramic ink is transferred to complex ceramic articles by a modified transfer process which allows 20% or greater of the surface area of the ceramic article to be printed. To adhere the ceramic ink to the ceramic articles, the surface of the ceramic article is sprayed with a thin layer of oil. After transfer of the ink design, residual poly vinyl alcohol is washed off of the article while the printed image is held in place by the insoluble precoated oil. The finished ceramic article has a 100% ceramic finish that is very durable.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: May 23, 1995
    Assignee: Armstrong World Industries, Inc.
    Inventors: Raymond C. Kent, Terry N. Tice, William C. Welch
  • Patent number: 5411791
    Abstract: A print and fusion process is used to fabricate ceramic elements that are subsequently utilized to generate a composite including a fibrous mat and discrete ceramic elements. The composite may include a substrate and a flexible or rigid non-ceramic composition between the discrete ceramic elements and/or the substrate. A ceramic ink preferably partially penetrates the fibrous mat to form the discrete elements or a continuous layer.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: May 2, 1995
    Assignee: Armstrong World Industries, Inc.
    Inventors: John S. Forry, Thomas C. Simonton, William C. Welch, Jerome D. Wisnosky