Patents by Inventor Joseph A. Sefcik

Joseph A. Sefcik 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: 8576971
    Abstract: A method and system for achieving fusion is provided. The method includes providing laser source that generates a laser beam and a target that includes a capsule embedded in the target and filled with DT gas. The laser beam is directed at the target. The laser beam helps create an electron beam within the target. The electron beam heats the capsule, the DT gas, and the area surrounding the capsule. At a certain point equilibrium is reached. At the equilibrium point, the capsule implodes and generates enough pressure on the DT gas to ignite the DT gas and fuse the DT gas nuclei.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: November 5, 2013
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Joseph A. Sefcik, Scott C. Wilks
  • Publication number: 20110261919
    Abstract: A method and system for achieving fusion is provided. The method includes providing laser source that generates a laser beam and a target that includes a capsule embedded in the target and filled with DT gas. The laser beam is directed at the target. The laser beam helps create an electron beam within the target. The electron beam heats the capsule, the DT gas, and the area surrounding the capsule. At a certain point equilibrium is reached. At the equilibrium point, the capsule implodes and generates enough pressure on the DT gas to ignite the DT gas and fuse the DT gas nuclei.
    Type: Application
    Filed: April 23, 2010
    Publication date: October 27, 2011
    Applicant: Lawrence Livermore National Security, LLC
    Inventors: Joseph A. Sefcik, Scott C. Wilks
  • Patent number: 6678351
    Abstract: A method of imaging an object by generating laser pulses with a short-pulse, high-power laser. When the laser pulse strikes a conductive target, bremsstrahlung radiation is generated such that hard ballistic high-energy electrons are formed to penetrate an object. A detector on the opposite side of the object detects these electrons. Since laser pulses are used to form the hard x-rays, multiple pulses can be used to image an object in motion, such as an exploding or compressing object, by using time gated detectors. Furthermore, the laser pulses can be directed down different tubes using mirrors and filters so that each laser pulse will image a different portion of the object.
    Type: Grant
    Filed: May 4, 2000
    Date of Patent: January 13, 2004
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Michael D. Perry, Joseph A. Sefcik
  • Patent number: 6150630
    Abstract: The invention consists of a method for machining (cutting, drilling, sculpting) of explosives (e.g., TNT, TATB, PETN, RDX, etc.). By using pulses of a duration in the range of 5 femtoseconds to 50 picoseconds, extremely precise and rapid machining can be achieved with essentially no heat or shock affected zone. In this method, material is removed by a nonthermal mechanism. A combination of multiphoton and collisional ionization creates a critical density plasma in a time scale much shorter than electron kinetic energy is transferred to the lattice. The resulting plasma is far from thermal equilibrium. The material is in essence converted from its initial solid-state directly into a fully ionized plasma on a time scale too short for thermal equilibrium to be established with the lattice. As a result, there is negligible heat conduction beyond the region removed resulting in negligible thermal stress or shock to the material beyond a few microns from the laser machined surface.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: November 21, 2000
    Assignee: The Regents of the University of California
    Inventors: Michael D. Perry, Brent C. Stuart, Paul S. Banks, Booth R. Myers, Joseph A. Sefcik
  • Patent number: 5191940
    Abstract: An oil/gas separator is disclosed that can be utilized to return the burning wells in Kuwait to production. Advantageously, a crane is used to install the separator at a safe distance from the well. The gas from the well is burned off at the site, and the oil is immediately pumped into Kuwait's oil gathering system. Diverters inside the separator prevent the oil jet coming out of the well from reaching the top vents where the gas is burned. The oil falls back down, and is pumped from an annular oil catcher at the bottom of the separator, or from the concrete cellar surrounding the well.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: March 9, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Carol T. Alonso, Donald A. Bender, Barry R. Bowman, Alan K. Burnham, Dwayne A. Chesnut, William J. Comfort, III, Lloyd G. Guymon, Carl D. Henning, Knud B. Pedersen, Joseph A. Sefcik, Joseph A. Smith, Mark S. Strauch