Patents by Inventor David J. Alexander

David J. Alexander 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: 11944596
    Abstract: Embodiments of the disclosure are drawn to an enteral feeding device for hydrolyzing triglycerides in a nutritional formula. The device may include a body housing a chamber, an inlet configured to fluidly couple with a source of nutritional formula, and an outlet configured to fluidly couple with an enteral feeding tube. The device may include a headspace and a plurality of particles contained within the chamber, wherein the lipase is covalently bonded to the plurality of particles. The device may include an inlet filter located between the inlet and the chamber, wherein the inlet filter contains a first plurality of openings, and an outlet filter located between the chamber and the outlet, wherein the outlet filter has a second plurality of openings smaller than the plurality of particles.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: April 2, 2024
    Assignee: Alcresta Therapeutics, Inc.
    Inventors: Robert Gallotto, Greta L. Loring, Kenneth Gary, Edward S. Park, David J. Brown, Willem Robert Klaas Schoevaart, Michiel Christian Alexander van Vliet
  • Patent number: 11911357
    Abstract: Embodiments of the disclosure are drawn to an enteral feeding device for hydrolyzing triglycerides in a nutritional formula. The device may include a body housing a chamber, an inlet configured to fluidly couple with a source of nutritional formula, and an outlet configured to fluidly couple with an enteral feeding tube. The device may include a headspace and a plurality of particles contained within the chamber, wherein the lipase is covalently bonded to the plurality of particles. The device may include an inlet filter located between the inlet and the chamber, wherein the inlet filter contains a first plurality of openings, and an outlet filter located between the chamber and the outlet, wherein the outlet filter has a second plurality of openings smaller than the plurality of particles.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: February 27, 2024
    Assignee: Alcresta Therapeutics, Inc.
    Inventors: Robert Gallotto, Greta L. Loring, Kenneth Gary, Edward S. Park, David J. Brown, Willem Robert Klaas Schoevaart, Michiel Christian Alexander van Vliet
  • Patent number: 9309737
    Abstract: A rotating gate valve can be used to shear cables or tubing as it closes to obstruct flow. In embodiments, a valve body can have a flow passage and a lateral bore that is transverse to the flow passage. The gate can have a generally cylindrical shape and can rotate about the axis of the gate as it moves laterally to close a flow passage. The lateral and rotational movement can shear articles such as, for example, cables and tubing that extend through the flow passage.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: April 12, 2016
    Assignee: Vetco Gray U.K. Limited
    Inventors: David J. Alexander, Prabhu Palanisamy, Hussain Hashemizadeh
  • Publication number: 20130327536
    Abstract: A rotating gate valve can be used to shear cables or tubing as it closes to obstruct flow. In embodiments, a valve body can have a flow passage and a lateral bore that is transverse to the flow passage. The gate can have a generally cylindrical shape and can rotate about the axis of the gate as it moves laterally to close a flow passage. The lateral and rotational movement can shear articles such as, for example, cables and tubing that extend through the flow passage.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 12, 2013
    Applicant: Vetco Gray UK Limited
    Inventors: David J. Alexander, Prabhu Palanisamy, Hussain Hashemizadeh
  • Patent number: 5275057
    Abstract: An attachment for placement between a test specimen and a remote clip gage extensometer providing improved fracture toughness tests of materials at elevated temperature. Using a cylindrical tube and axial rod in new relationship, the device transfers the displacement signal of the fracture toughness test specimen directly to a clip gage extensometer located outside the high temperature furnace. Virtually frictionless operation is assured by having the test specimen center one end of the rod in one end of the tube, while the clip gage extensometer arms center the other end of the rod in the other end of the tube. By providing positive control over both ends of both rod and tube, the attachment may be operated in orientations other than vertical.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: January 4, 1994
    Assignee: Martin Marietta Energy Systems, Inc.
    Inventor: David J. Alexander