Patents by Inventor Stephen Lo

Stephen Lo 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).

  • METHODS AND SYSTEMS FOR FRAC PLUGS AND DOWNHOLE TOOLS
    Publication number: 20240117710
    Abstract: A downhole tool with a flapper positioned within a mandrel. More specifically, embodiments are directed toward flappers with different mechanisms to open and close the flapper.
    Type: Application
    Filed: December 18, 2023
    Publication date: April 11, 2024
    Applicant: Vertice Oil Tools, Inc.
    Inventors: Mohamed Saraya, Mike Lo, Stephen Parks
  • METHODS AND SYSTEMS FOR A FRAC PLUG
    Publication number: 20240093569
    Abstract: A frac plug with lower slips and a lower cone. In embodiments, a lower cone ramp angle is greater than or equal to a cone bevel angle and a slip inner cut angle. This geometry enables the fins of the cone to not interact with the lower slips, which may not break the lower slips as the lower slips move over the cone. Instead, the lower slips may break due to stresses caused by the tendency of the lower slips to expand as they lower slips interact with the ramp of the lower cone.
    Type: Application
    Filed: November 15, 2023
    Publication date: March 21, 2024
    Applicant: Vertice Oil Tools, Inc.
    Inventors: Mohamed Saraya, Stephen Parks, Mike Lo
  • POLYMER COMPOSITIONS COMPRISING COMPOUNDS DERIVED FROM BIOLOGY
    Publication number: 20220098177
    Abstract: A compound comprises a moiety selected from a cyclic dimer of a first and a second amino acid or a 2.5-diketopiperazine made from an amino acid. The moiety can be produced by fermentation. The compound further includes a polymerizable group. Additionally, the disclosure includes a method for preparing a resin comprises reacting the compound comprising the foregoing moiety and polymerizable group with a reagent.
    Type: Application
    Filed: December 30, 2019
    Publication date: March 31, 2022
    Applicant: Zymergen Inc.
    Inventors: John J. McNamara, Carol A. Koch, Michael William Angus MacLean, Stephen Lo, Ke Li, Jason P. Safko, Md Nazim Uddin, Jenny Shao, Joachim C. Ritter
  • USE OF HETEROCYCLIC AMINES CONTAINING PRIMARY OR SECONDARY AMINES AS A POLYMER CATALYST OR HARDENER
    Publication number: 20210261721
    Abstract: An epoxy resin composition comprises about 70 wt % to about 95 wt % by weight of the composition of an epoxy component; and a curing component comprising about 5 wt % to about 30 wt % by weight of the composition, wherein the curing component is includes an imidazole; wherein the epoxy component and the curing component react together at a temperature of about 100 C to about 130 C to form a substantially cured reaction product in about 10 minutes or less and the cured product shows high tensile and flexural strength.
    Type: Application
    Filed: June 14, 2019
    Publication date: August 26, 2021
    Applicant: Zymergen Inc.
    Inventors: Szymon Kosinski, Stephen Lo, Timothy Mauldin, Shilpa Naresh Raja, Nicole G. Ricapito, Adam Safir
  • Lead electrode for use in an MRI-safe implantable medical device
    Patent number: 8364286
    Abstract: A neurostimulation lead is configured to be implanted into a patient's body and has at least one distal electrode. The lead comprises at least one conductive filer electrically coupled to the distal electrode, a jacket for housing the conductive filer and a shield surrounding at least a portion of the filer for reducing electromagnetic coupling to the filer.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: January 29, 2013
    Assignee: Medtronic, Inc.
    Inventors: Thomas Barry Hoegh, Stephen Lo Bolea, Carl D. Wahlstrand, Gregory A. Hrdlicka, James M. Olsen
  • Lead Electrode for Use in an MRI-Safe Implantable Medical Device
    Publication number: 20110112615
    Abstract: A neurostimulation lead is configured to be implanted into a patient's body and has at least one distal electrode. The lead comprises at least one conductive filer electrically coupled to the distal electrode, a jacket for housing the conductive filer and a shield surrounding at least a portion of the filer for reducing electromagnetic coupling to the filer.
    Type: Application
    Filed: January 10, 2011
    Publication date: May 12, 2011
    Inventors: Thomas Barry Hoegh, Stephen Lo Bolea, Carl D. Wahlstrand, Gregory A. Hrdlicka, James M. Olsen
  • Lead electrode for use in an MRI-safe implantable medical device
    Patent number: 7877150
    Abstract: A neurostimulation lead is configured to be implanted into a patient's body and has at least one distal electrode. The lead comprises at least one conductive filer electrically coupled to the distal electrode, a jacket for housing the conductive filer and a shield surrounding at least a portion of the filer for reducing electromagnetic coupling to the filer.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: January 25, 2011
    Assignee: Medtronic, Inc.
    Inventors: Thomas Barry Hoegh, Stephen Lo Bolea, Carl D. Wahlstrand, Gregory A. Hrdlicka, James M. Olsen
  • Inhibitors of cysteine protease
    Publication number: 20040180927
    Abstract: The present invention relates to compounds of formula (I): 1
    Type: Application
    Filed: February 27, 2004
    Publication date: September 16, 2004
    Applicant: SmithKline Beecham Corporation
    Inventors: Robert W. Marquis, Daniel F. Veber, Yu Ru, Stephen Lo Castro
  • Inhibitors of cysteine protease
    Publication number: 20020128476
    Abstract: This invention relates to compounds of formula (I): 1
    Type: Application
    Filed: April 17, 2001
    Publication date: September 12, 2002
    Applicant: SmithKline Beecham corporation
    Inventors: Robert W. Marquis, Daniel F. Veber, Yu Ru, Stephen Lo Castro