Patents by Inventor Leslie Howell

Leslie Howell 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).

  • Retrievable back pressure valve and method of using same
    Patent number: 11220883
    Abstract: The present invention is a retrievable back pressure valve device and method of using the same that may be placed in tubing during well completion and retrieved as desired by dropping a ball down hole, which then interacts with the valve to shear the positioning points allowing for retrieval as the valve is allowed to move up the well to be removed from same.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: January 11, 2022
    Inventors: Belo Kellam, Weldon Kennedy, Leslie Howell
  • Retrievable back pressure valve and method of using same
    Patent number: 10626701
    Abstract: The present invention is a retrievable back pressure valve device and method of using the same that may be placed in tubing during well completion and retrieved as desired by dropping a ball down hole, which then interacts with the valve to shear the positioning points allowing for retrieval as the valve is allowed to move up the well to be removed from same.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: April 21, 2020
    Inventors: Belo Kellam, Weldon Kennedy, Leslie Howell
  • Retrievable back pressure valve and method of using same
    Patent number: 10113391
    Abstract: The present invention is a retrievable back pressure valve device and method of using the same that may be placed in tubing during well completion and retrieved as desired by dropping a ball down hole, which then interacts with the valve to shear the positioning points allowing for retrieval as the valve is allowed to move up the well to be removed from same.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: October 30, 2018
    Inventors: Belo Kellam, Weldon Kennedy, Leslie Howell
  • Retrievable back pressure valve and method of using same
    Patent number: 9863213
    Abstract: The present invention is a retrievable back pressure valve device and method of using the same that may be placed in tubing during well completion and retrieved as desired by dropping a ball down hole, which then interacts with the valve to shear the positioning points allowing for retrieval as the valve is allowed to move up the well to be removed from same.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: January 9, 2018
    Assignee: Hybrid Tools Solutions LLC
    Inventors: Belo Kellam, Weldon Kennedy, Leslie Howell