Patents by Inventor Ralph Arthur Liebelt

Ralph Arthur Liebelt 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).

  • Sacroiliac screw
    Patent number: 10123825
    Abstract: An improved joint fusion screw for transiliac fixation has a screw head and extending therefrom an elongate hollow shaft. The hollow shaft has an externally threaded end portion extending to a tip end and a non-externally threaded shank portion having a plurality of window openings. At or near the tip end is a start of a thread with a bone cutting flute. The bone cutting flute has a cutting edge on a circumferential exterior of the threaded tip to cut bone and directs the cut bone internally into a bone receiving opening in the hollow shaft directly in front of the cutting flute. The cutting edge lies at the start of the thread extending radially above the bone receiving opening at least partially overhanging the opening configured to cut bone.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: November 13, 2018
    Assignee: Amendia, Inc.
    Inventors: Dale Whipple, Jason Hayes Tillett, John G. Keating, Jon Potter Kimball, Ralph Arthur Liebelt
  • Sacroiliac screw
    Patent number: 9943340
    Abstract: An improved joint fusion screw for transiliac fixation has a screw head and extending therefrom an elongate hollow shaft. The hollow shaft has an externally threaded end portion extending to a tip end and a non-externally threaded shank portion having a plurality of window openings. At or near the tip end is a start of a thread with a bone cutting flute. The bone cutting flute has a cutting edge on a circumferential exterior of the threaded tip to cut bone and directs the cut bone internally into a bone receiving opening in the hollow shaft directly in front of the cutting flute. The cutting edge lies at the start of the thread extending radially above the bone receiving opening at least partially overhanging the opening configured to cut bone.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: April 17, 2018
    Assignee: Amendia, Inc.
    Inventors: Dale Whipple, Jason Hayes Tillett, John G. Keating, Jon Potter Kimball, Ralph Arthur Liebelt
  • SACROILIAC SCREW
    Publication number: 20160242820
    Abstract: An improved joint fusion screw for transiliac fixation has a screw head and extending therefrom an elongate hollow shaft. The hollow shaft has an externally threaded end portion extending to a tip end and a non-externally threaded shank portion having a plurality of window openings. At or near the tip end is a start of a thread with a bone cutting flute. The bone cutting flute has a cutting edge on a circumferential exterior of the threaded tip to cut bone and directs the cut bone internally into a bone receiving opening in the hollow shaft directly in front of the cutting flute. The cutting edge lies at the start of the thread extending radially above the bone receiving opening at least partially overhanging the opening configured to cut bone.
    Type: Application
    Filed: September 17, 2015
    Publication date: August 25, 2016
    Applicant: Amendia, Inc.
    Inventors: Dale Whipple, Jason Hayes Tillett, John G. Keating, Jon Potter Kimball, Ralph Arthur Liebelt