Patents by Inventor Ductri Nguyen

Ductri Nguyen 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).

  • Venting lifting plug for munitions
    Patent number: 10571234
    Abstract: A venting lifting plug is provided for an unfuzed munition having a cavity with internal threads.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: February 25, 2020
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: William Morelli, Stojan Kotefski, Nikola Kotevski, Ductri Nguyen, Dominick DeMella, Paul Manz, Philip Magnotti
  • Lithographic fragmentation technology
    Patent number: 10416564
    Abstract: A fragmentation pattern is formed on a surface of a warhead using an etchant process. An etchant resistance material is coated on an interior surface of the warhead casing. A portion of the etchant resistant material is selectively removed by a directed energy process and an etchant is applied to the exposed portion of the warhead casing surface thereby etching the fragmentation pattern. Alternatively, a protective coating is applied over the entire surface thereby creating the fragmentation pattern.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: September 17, 2019
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Paul Manz, Philip Magnotti, Ductri Nguyen
  • Extendable stabilizer for projectile
    Patent number: 8735789
    Abstract: A statically stabilized projectile may include a fixed tail boom that may be disposed in the through-bore of a sliding tail boom. The sliding tail boom may translate or extend rearward with respect to the fixed tail boom before the projectile exits a launch tube. The through-bore of the sliding tail boom may include a tapered portion. A tail boom sleeve may be fixed to a rear portion of the fixed tail boom. The tail boom sleeve may include a tapered portion that abuts the tapered portion of the through-bore when the sliding tail boom is in an extended position.
    Type: Grant
    Filed: September 20, 2010
    Date of Patent: May 27, 2014
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Gregory Malejko, Keith Fulton, Ductri Nguyen
  • Venting lifting plug for munitions
    Patent number: 8596291
    Abstract: A venting lifting plug is provided for an unfuzed munition having a fuze cavity with internal threads, the venting lifting plug is formed of a threaded ring having both internal and external threads together with a lifting plug having a lifting ring, a neck and a round portion having external threads, external threads on the threaded ring being in threaded engagement with internal threads on the fuze cavity of the munition, internal threads on the threaded ring being in threaded engagement with external threads on the lifting plug, and a threaded joint formed between the lifting plug and threaded ring is soldered together with one or more eutectic materials having a melting point lower than a predetermined critical temperature of cook-off gases from the munition.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: December 3, 2013
    Inventors: Stojan Kotefski, Ductri Nguyen, Dominick DeMella, Paul Manz, William Morelli, Philip J Magnotti, Lidija Kotevska
  • Venting Lifting Plug For Munitions
    Publication number: 20120298005
    Abstract: A venting lifting plug is provided for an unfuzed munition having a fuze cavity with internal threads, the venting lifting plug is formed of a threaded ring having both internal and external threads together with a lifting plug having a lifting ring, a neck and a round portion having external threads, external threads on the threaded ring being in threaded engagement with internal threads on the fuze cavity of the munition, internal threads on the threaded ring being in threaded engagement with external threads on the lifting plug, and a threaded joint formed between the lifting plug and threaded ring is soldered together with one or more eutectic materials having a melting point lower than a predetermined critical temperature of cook-off gases from the munition.
    Type: Application
    Filed: April 10, 2012
    Publication date: November 29, 2012
    Inventors: Steve Kotefski, Ductri Nguyen, Dominick DeMella, Paul Manz, William Morelli, Philip J. Magnotti, Lidija Kotevska