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: 12098607
    Abstract: A downhole vibration tool includes a body, a mandrel, a spring, and a balance piston. The body may be generally tubular and may have one or more helical slots formed on an inner surface thereof. The mandrel may be generally tubular, may have a bore, and may be positioned at least partially within the body. The mandrel may have one or more helical splines formed on an outer surface of the mandrel, the helical splines engaging the helical slots of the body such that the mandrel is translatable axially relative to the body. The spring may be positioned in an annular space formed between the mandrel and the body defined as a spring chamber. The balance piston may be in an annular space formed between the mandrel and the body, wherein the balance piston separates an oil-filled chamber from an internal pressure chamber.
    Type: Grant
    Filed: November 16, 2022
    Date of Patent: September 24, 2024
    Assignee: TURBO DRILL INDUSTRIES, INC.
    Inventors: Sheldon Ritchie, Mark Adam, Chad Feddema
  • Publication number: 20240292831
    Abstract: The disclosure generally relates to a system for perfusing an ex-vivo liver including a pump configured to pump a perfusion fluid through a perfusion circuit, the pump in fluid communication with a hepatic artery interface and a portal vein interface; an oxygenator; a heater; an inferior vena cava interface in fluid communication with an inferior vena cava of the ex-vivo liver; and a reservoir configured to receive the perfusion fluid from the inferior vena cava of the ex-vivo liver and store a volume of fluid.
    Type: Application
    Filed: January 2, 2024
    Publication date: September 5, 2024
    Inventors: Waleed H. HASSANEIN, Tamer I. KHAYAL, Ahmed ELBETANONY, Jeff BARNES, Greg RITCHIE, Richard BRINGHAM, Mark ANDERSON, John SULLIVAN
  • Publication number: 20230038339
    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: September 27, 2022
    Publication date: February 9, 2023
    Inventors: Rommel LUMAUIG, Joel HARRINGTON, Chad ABUNASSAR, David D. HART, Cornel I. CIUREA, Mark A. RITCHIE, Jay A. KING, Jill McCoy
  • 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
  • Publication number: 20200179145
    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: February 12, 2020
    Publication date: June 11, 2020
    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
  • Patent number: 9913958
    Abstract: A process for making a sheath used to protect a medical device. The medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. A sheath is placed over the crimped scaffold after crimping to reduce recoil of the crimped polymer scaffold and maintain scaffold-balloon engagement relied on to hold the scaffold to the balloon when the scaffold is being delivered to a target in a body. The sheath is removed by a health professional either by removing the sheath directly or using a tube containing the catheter.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: March 13, 2018
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Cornel I. Ciurea, Karen J. Wang, David Hart, Mark Ritchie, Jessie Madriaga
  • 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
  • Patent number: 9679757
    Abstract: One aspect of the invention provides a liquid chromatography system including: a first solvent manager configured to dispense various ratios of a first solvent and a second solvent; a first column in fluid communication with the first solvent manager; a mixer in fluid communication with the first column; a first valve in fluid communication with the mixer; a second column having a first end in fluid communication with a first port of the first valve and a second end in fluid communication with a second port of the first valve; a second solvent manager adapted and configured to dispense various ratios of a third solvent and a fourth solvent; and a second valve in fluid communication with the second solvent manager, the first valve, and the mixer. The first valve and the second valve are adapted and configured for actuation between and a second position.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: June 13, 2017
    Assignee: Waters Technologies Corporation
    Inventors: Jeremy D. Netto, Mark Ritchie
  • Patent number: 9568454
    Abstract: The invention provides novel, simple, reliable and effective methods for separating various lipids from biological samples. In certain embodiments, the invention provides HILIC-based UHPLC separation methods. In one embodiment, the methods of the invention offer an efficient and rapid separation of ether glycophospholipids (e.g., plasmalogens) from their diacyl or monoacyl counterparts within the same lipid class. In certain instances, the invention relates to the use of a Waters ACQUITY UPLCĀ® system.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: February 14, 2017
    Assignee: Waters Technologies Corporation
    Inventors: Stephen Wong, Mark Ritchie
  • 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: 9518960
    Abstract: The subject technology is directed to a CO2-based system and method for rapid determination of the levels and/or the presence or absence of polycyclic aromatic hydrocarbons (PAHs).
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: December 13, 2016
    Assignee: Waters Technologies Corporation
    Inventors: Tarang Nema, Melvin Gay, Mark Ritchie
  • Publication number: 20150246203
    Abstract: A process for making a sheath used to protect a medical device. The medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. A sheath is placed over the crimped scaffold after crimping to reduce recoil of the crimped polymer scaffold and maintain scaffold-balloon engagement relied on to hold the scaffold to the balloon when the scaffold is being delivered to a target in a body. The sheath is removed by a health professional either by removing the sheath directly or using a tube containing the catheter.
    Type: Application
    Filed: February 28, 2014
    Publication date: September 3, 2015
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Cornel I. Ciurea, Karen J. Wang, David Hart, Mark Ritchie, Jessie Madriaga
  • Publication number: 20150089997
    Abstract: The subject technology is directed to a CO2-based system and method for rapid determination of the levels and/or the presence or absence of polycyclic aromatic hydrocarbons (PAHs).
    Type: Application
    Filed: October 1, 2014
    Publication date: April 2, 2015
    Inventors: Tarang NEMA, Melvin GAY, Mark RITCHIE
  • Publication number: 20140338432
    Abstract: The invention provides novel, simple, reliable and effective methods for separating various lipids from biological samples. In certain embodiments, the invention provides HILIC-based UHPLC separation methods. In one embodiment, the methods of the invention offer an efficient and rapid separation of ether glycophospholipids (e.g., plasmalogens) from their diacyl or monoacyl counterparts within the same lipid class. In certain instances, the invention relates to the use of a Waters ACQUITY UPLCĀ® system.
    Type: Application
    Filed: April 11, 2014
    Publication date: November 20, 2014
    Applicant: WATERS TECHNOLOGIES CORPORATION
    Inventors: Stephen Wong, Mark Ritchie
  • Publication number: 20140306105
    Abstract: One aspect of the invention provides a liquid chromatography system including: a first solvent manager configured to dispense various ratios of a first solvent and a second solvent; a first column in fluid communication with the first solvent manager; a mixer in fluid communication with the first column; a first valve in fluid communication with the mixer; a second column having a first end in fluid communication with a first port of the first valve and a second end in fluid communication with a second port of the first valve; a second solvent manager adapted and configured to dispense various ratios of a third solvent and a fourth solvent; and a second valve in fluid communication with the second solvent manager, the first valve, and the mixer. The first valve and the second valve are adapted and configured for actuation between and a second position.
    Type: Application
    Filed: April 9, 2014
    Publication date: October 16, 2014
    Applicant: Waters Technologies Corporation
    Inventors: Jeremy D. Netto, Mark Ritchie
  • 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: 20140156549
    Abstract: A method of estimating the soil organic carbon (SOC) stocks for a grassland based on the plant-derived SOC plus the dung-derived SOC minus the carbon lost through microbial maintenance respiration. The plant-derived SOC, dung-derived SOC, and microbial maintenance respiration are estimated by considering the effect of one or more of the lignin and cellulose content of the plant material, the estimated annual aboveground and belowground plant production, the grazing intensity, the number of fires per year, the mean annual rainfall, the belowground net primary production, and the soil texture. The method thus provides an allowance of plants to compensate for grazing without losing leaf area, and the diversion of carbon through grazing animals and into soil through the deposit of dung.
    Type: Application
    Filed: November 19, 2013
    Publication date: June 5, 2014
    Applicant: SYRACUSE UNIVERSITY
    Inventor: Mark 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