Patents by Inventor James B. Lewis

James B. Lewis 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).

  • Titanium master alloy for titanium-aluminum based alloys
    Patent number: 11959185
    Abstract: A process is disclosed for the electro-refinement of titanium aluminides to produce titanium-aluminum master alloys which process is effective even in the presence of substantial amounts of aluminum and in the presence of ten (10) or more weight percent oxygen in the material(s) to be refined. The process is likewise effective without the addition of titanium chlorides or other forms of soluble titanium to the electrolyte bath comprising halide salts of alkali metals or alkali-earth metals or a combination thereof.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: April 16, 2024
    Assignee: UNIVERSAL ACHEMETAL TITANIUM, LLC
    Inventors: James R. Cox, Chanaka L. DeALWIS, Benjamin A. Kohler, Michael G. Lewis, Juliane B. Kluck
  • Valve system
    Patent number: 8991353
    Abstract: A valve for an engine cylinder includes a head. The valve is selectively moveable between a closed position in which the head blocks a port and an open position in which the head unblocks the port. A lower stem is formed as one-piece with the head, and a thermal cavity formed within the lower stem. The thermal cavity is at least partially filled with a heat transfer medium. An upper stem is attached to the lower stem opposite the head. A thermal barrier is located adjacent a junction of the lower stem and the upper stem.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: March 31, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: James B. Lewis, Hong Wai Nguyen
  • VALVE SYSTEM
    Publication number: 20130276728
    Abstract: A valve for an engine cylinder includes a head. The valve is selectively moveable between a closed position in which the head blocks a port and an open position in which the head unblocks the port. A lower stem is formed as one-piece with the head, and a thermal cavity formed within the lower stem. The thermal cavity is at least partially filled with a heat transfer medium. An upper stem is attached to the lower stem opposite the head. A thermal barrier is located adjacent a junction of the lower stem and the upper stem.
    Type: Application
    Filed: April 18, 2012
    Publication date: October 24, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: James B. Lewis, Hong Wai Nguyen