Patents by Inventor Mark A. Ritchie

Mark A. Ritchie 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: 11478370
    Abstract: A scaffold includes a radiopaque marker connected to a strut. The marker is retained within the strut by a head at one or both ends. The marker is attached to the strut by a process that includes forming a rivet from a radiopaque bead and attaching the rivet to the marker including deforming the rivet to enhance resistance to dislodgement during crimping or balloon expansion. The strut has a thickness of about 100 microns.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: October 25, 2022
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Rommel Lumauig, Joel Harrington, Chad Abunassar, David D. Hart, Cornel I. Ciurea, Mark A. Ritchie, Jay A. King, Jill McCoy
  • Patent number: 10610387
    Abstract: A scaffold includes a radiopaque marker connected to a strut. The marker is retained within the strut by a head at one or both ends. The marker is attached to the strut by a process that includes forming a rivet from a radiopaque bead and attaching the rivet to the marker including deforming the rivet to enhance resistance to dislodgement during crimping or balloon expansion. The strut has a thickness of about 100 microns.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: April 7, 2020
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Rommel Lumauig, Joel Harrington, Chad Abunassar, David D. Hart, Cornel I. Ciurea, Mark A. Ritchie, Jay A. King, Jill McCoy
  • Publication number: 20170333233
    Abstract: A scaffold includes a radiopaque marker connected to a strut. The marker is retained within the strut by a head at one or both ends. The marker is attached to the strut by a process that includes forming a rivet from a radiopaque bead and attaching the rivet to the marker including deforming the rivet to enhance resistance to dislodgement during crimping or balloon expansion. The strut has a thickness of about 100 microns.
    Type: Application
    Filed: June 6, 2017
    Publication date: November 23, 2017
    Inventors: Rommel Lumauig, Joel Harrington, Chad Abunassar, David D. Hart, Cornel I. Ciurea, Mark A. Ritchie, Jay A. King, Jill McCoy
  • Patent number: 9700443
    Abstract: A scaffold includes a radiopaque marker connected to a strut. The marker is retained within the strut by a head at one or both ends. The marker is attached to the strut by a process that includes forming a rivet from a radiopaque bead and attaching the rivet to the marker including deforming the rivet to enhance resistance to dislodgement during crimping or balloon expansion. The strut has a thickness of about 100 microns.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: July 11, 2017
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Rommel Lumauig, Joel Harrington, Chad Abunassar, David D. Hart, Cornel I. Ciurea, Mark A. Ritchie, Jay A. King, Jill McCoy
  • Publication number: 20160361182
    Abstract: A scaffold includes a radiopaque marker connected to a strut. The marker is retained within the strut by a head at one or both ends. The marker is attached to the strut by a process that includes forming a rivet from a radiopaque bead and attaching the rivet to the marker including deforming the rivet to enhance resistance to dislodgement during crimping or balloon expansion. The strut has a thickness of about 100 microns.
    Type: Application
    Filed: June 12, 2015
    Publication date: December 15, 2016
    Inventors: Rommel Lumauig, Joel Harrington, Chad Abunassar, David D. Hart, Cornel I. Ciurea, Mark A. Ritchie, Jay A. King, Jill McCoy
  • Patent number: 8801503
    Abstract: A tool head for a machine tool comprising a plurality of tool spindles with each tool spindle being rotatable about a respective tool axis. The plurality of tool spindles comprises at least a first tool spindle rotatable about a first tool axis, a second tool spindle rotatable about a second tool axis and a third tool spindle being rotatable about a third tool axis with the first, second and third tool axes being parallel to one another. The first, second and third tool spindles are arranged on the tool head whereby one of the first, second and third tool spindles faces a first direction and the other two of the first, second and third tool spindles face a second direction with the first and second directions being 180 degrees apart. The tool spindles are preferably grinding spindles on a machine for grinding bevel gear cutting tools.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: August 12, 2014
    Assignee: Gleason Cutting Tools Corporation
    Inventors: Roger L. Hackman, Wayne Martin, Mark A. Ritchie
  • Publication number: 20130337726
    Abstract: A tool head for a machine tool comprising a plurality of tool spindles with each tool spindle being rotatable about a respective tool axis. The plurality of tool spindles comprises at least a first tool spindle rotatable about a first tool axis, a second tool spindle rotatable about a second tool axis and a third tool spindle being rotatable about a third tool axis with the first, second and third tool axes being parallel to one another. The first, second and third tool spindles are arranged on the tool head whereby one of the first, second and third tool spindles faces a first direction and the other two of the first, second and third tool spindles face a second direction with the first and second directions being 180 degrees apart. The tool spindles are preferably grinding spindles on a machine for grinding bevel gear cutting tools.
    Type: Application
    Filed: June 19, 2012
    Publication date: December 19, 2013
    Applicant: GLEASON CUTTING TOOLS CORPORATION
    Inventors: Roger L. Hackman, Wayne Martin, Mark A. Ritchie
  • Publication number: 20120129434
    Abstract: A multi-axis computer controlled machine tool for relief grinding of single and multiple start threaded hobs (46). The machine comprises an angular oriented spindle (65) that can be angularly (swivel) positioned thereby providing the flexibility to utilize both cup-shaped grinding wheels (55) and pencil-shaped grinding wheels (52) for grinding of hob and milling cutter relieved tooth geometry without exchanging grinding spindles assemblies or modifying the machine construction to accommodate two types of grinding methods or utilizing an additional machine axis for the spindle re-orientation.
    Type: Application
    Filed: September 23, 2010
    Publication date: May 24, 2012
    Applicant: GLEASON CUTTING TOOLS CORPORATION
    Inventors: Roger L. Hackman, Wayne Martin, Mark A. Ritchie