Patents by Inventor James L. Willit

James L. Willit 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).

  • Publication number: 20160284434
    Abstract: The present invention provides a method for producing Cu67 radioisotope suitable for use in medical applications. The method comprises irradiating a metallic zinc-68 (Zn68) target within a sealed ceramic capsule with a high energy gamma ray beam. After irradiation, the Cu67 is isolated from the Zn68 by any suitable method (e.g. chemical and or physical separation). In a preferred embodiment, the Cu67 is isolated by sublimation of the zinc in a ceramic sublimation tube to afford a copper residue containing Cu67. The Cu67 can be further purified by chemical means.
    Type: Application
    Filed: March 31, 2016
    Publication date: September 29, 2016
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: David A. EHST, James L. WILLIT
  • Patent number: 9312037
    Abstract: The present invention provides a method for producing Cu67 radioisotope suitable for use in medical applications. The method comprises irradiating a metallic zinc-68 (Zn68) target within a sealed ceramic capsule with a high energy gamma ray beam. After irradiation, the Cu67 is isolated from the Zn68 by any suitable method (e.g. chemical and or physical separation). In a preferred embodiment, the Cu67 is isolated by sublimation of the zinc in a ceramic sublimation tube to afford a copper residue containing Cu67. The Cu67 can be further purified by chemical means.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: April 12, 2016
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: David A. Ehst, James L. Willit
  • Patent number: 9150975
    Abstract: An electrorefiner system according to a non-limiting embodiment of the present invention may include a vessel configured to maintain a molten salt electrolyte and configured to receive a plurality of alternately arranged cathode and anode assemblies. The anode assemblies are configured to hold an impure nuclear feed material. Upon application of the power system, the impure nuclear feed material is anodically dissolved and a purified metal is deposited on the cathode rods of the cathode assemblies. A scraper is configured to dislodge the purified metal deposited on the cathode rods. A conveyor system is disposed at a bottom of the vessel and configured to remove the dislodged purified metal from the vessel.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: October 6, 2015
    Assignee: GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
    Inventors: John F. Berger, Mark A. Williamson, Stanley G. Wiedmeyer, James L. Willit, Laurel A. Barnes, Robert J. Blaskovitz
  • Patent number: 9017527
    Abstract: An electrolytic oxide reduction system according to a non-limiting embodiment of the present invention may include a plurality of anode assemblies, a plurality of cathode assemblies, and a lift system configured to engage the anode and cathode assemblies. The cathode assemblies may be alternately arranged with the anode assemblies such that each cathode assembly is flanked by two anode assemblies. The lift system may be configured to selectively engage the anode and cathode assemblies so as to allow the simultaneous lifting of any combination of the anode and cathode assemblies (whether adjacent or non-adjacent).
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: April 28, 2015
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: Stanley G. Wiedmeyer, Laurel A. Barnes, Mark A. Williamson, James L. Willit, John F. Berger
  • Publication number: 20150053551
    Abstract: Modular cathode assemblies are useable in electrolytic reduction systems and include a basket through which fluid electrolyte may pass and exchange charge with a material to be reduced in the basket. The basket can be divided into upper and lower sections to provide entry for the material. Example embodiment cathode assemblies may have any shape to permit modular placement at any position in reduction systems. Modular cathode assemblies include a cathode plate in the basket, to which unique and opposite electrical power may be supplied. Example embodiment modular cathode assemblies may have standardized electrical connectors. Modular cathode assemblies may be supported by a top plate of an electrolytic reduction system. Electrolytic oxide reduction systems are operated by positioning modular cathode and anode assemblies at desired positions, placing a material in the basket, and charging the modular assemblies to reduce the metal oxide.
    Type: Application
    Filed: October 30, 2014
    Publication date: February 26, 2015
    Applicant: GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
    Inventors: Stanley G. WIEDMEYER, Laurel A. BARNES, Mark A. WILLIAMSON, James L. WILLIT
  • Patent number: 8956524
    Abstract: Modular anode assemblies are used in electrolytic oxide reduction systems for scalable reduced metal production via electrolysis. Assemblies include a channel frame connected to several anode rods extending into an electrolyte. An electrical system powers the rods while being insulated from the channel frame. A cooling system removes heat from anode rods and the electrical system. An anode guard attaches to the channel frame to prevent accidental electrocution or damage during handling or repositioning. Each anode rod may be divided into upper and lower sections to permit easy repair and swapping out of lower sections. The modular assemblies may have standardized components to permit placement at multiple points within a reducing system. Example methods may operate an electrolytic oxide reduction system by positioning the modular anode assemblies in the reduction system and applying electrical power to the plurality of anode assemblies.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: February 17, 2015
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: Stanley G. Wiedmeyer, Laurel A. Barnes, Mark A. Williamson, James L. Willit
  • Patent number: 8945354
    Abstract: Embodiments include a cathode scraper system and/or method of using the same for removing uranium. The cathode scraper system includes a plurality of cathode assemblies. Each cathode assembly includes a plurality of cathode rods. The cathode scraper system also includes a cathode scraper assembly configured to remove purified uranium deposited on the plurality of cathode rods. The cathode scraper assembly includes a plurality of scrapers arranged in a lattice, and each scraper of the plurality of scrapers is arranged to correspond to a different cathode rod.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: February 3, 2015
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: Mark A. Williamson, Stanley G. Wiedmeyer, James L. Willit, Laurel A. Barnes, Robert J. Blaskovitz
  • Patent number: 8900439
    Abstract: Modular cathode assemblies are useable in electrolytic reduction systems and include a basket through which fluid electrolyte may pass and exchange charge with a material to be reduced in the basket. The basket can be divided into upper and lower sections to provide entry for the material. Example embodiment cathode assemblies may have any shape to permit modular placement at any position in reduction systems. Modular cathode assemblies include a cathode plate in the basket, to which unique and opposite electrical power may be supplied. Example embodiment modular cathode assemblies may have standardized electrical connectors. Modular cathode assemblies may be supported by a top plate of an electrolytic reduction system. Electrolytic oxide reduction systems are operated by positioning modular cathode and anode assemblies at desired positions, placing a material in the basket, and charging the modular assemblies to reduce the metal oxide.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: December 2, 2014
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: Stanley G. Wiedmeyer, Laurel A. Barnes, Mark A. Williamson, James L. Willit
  • Patent number: 8882973
    Abstract: Embodiments include a cathode power distribution system and/or method of using the same for power distribution. The cathode power distribution system includes a plurality of cathode assemblies. Each cathode assembly of the plurality of cathode assemblies includes a plurality of cathode rods. The system also includes a plurality of bus bars configured to distribute current to each of the plurality of cathode assemblies. The plurality of bus bars include a first bus bar configured to distribute the current to first ends of the plurality of cathode assemblies and a second bus bar configured to distribute the current to second ends of the plurality of cathode assemblies.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: November 11, 2014
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: Mark A. Williamson, Stanley G. Wiedmeyer, Eugene R. Koehl, James L. Bailey, James L. Willit, Laurel A. Barnes, Robert J. Blaskovitz
  • Patent number: 8771482
    Abstract: An electrolytic oxide reduction system according to a non-limiting embodiment of the present invention may include a plurality of anode assemblies and an anode shroud for each of the anode assemblies. The anode shroud may be used to dilute, cool, and/or remove off-gas from the electrolytic oxide reduction system. The anode shroud may include a body portion having a tapered upper section that includes an apex. The body portion may have an inner wall that defines an off-gas collection cavity. A chimney structure may extend from the apex of the upper section and be connected to the off-gas collection cavity of the body portion. The chimney structure may include an inner tube within an outer tube. Accordingly, a sweep gas/cooling gas may be supplied down the annular space between the inner and outer tubes, while the off-gas may be removed through an exit path defined by the inner tube.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: July 8, 2014
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: James L. Bailey, Laurel A. Barnes, Stanley G. Wiedmeyer, Mark A. Williamson, James L. Willit
  • Patent number: 8746440
    Abstract: A continuous recovery system for an electrorefiner system may include a trough having a ridge portion and a furrow portion. The furrow portion may include a first section and a second section. An inlet and exit pipe may be connected to the trough. The inlet pipe may include an outlet opening that opens up to the first section of the furrow portion of the trough. The exit pipe may include an entrance opening that opens up to the second section of the furrow portion of the trough. A chain may extend through the inlet and exit pipes and along the furrow portion of the trough. The chain may be in a continuous loop form. A plurality of flights may be secured to the chain. Accordingly, the desired product may be continuously harvested from the electrorefiner system without having to halt the electrical power and/or remove the cathode and anode assemblies.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: June 10, 2014
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: Mark A. Williamson, Stanley G. Wiedmeyer, James L. Willit, Laurel A. Barnes, Robert J. Blaskovitz
  • Patent number: 8636892
    Abstract: Power distribution systems are useable in electrolytic reduction systems and include several cathode and anode assembly electrical contacts that permit flexible modular assembly numbers and placement in standardized connection configurations. Electrical contacts may be arranged at any position where assembly contact is desired. Electrical power may be provided via power cables attached to seating assemblies of the electrical contacts. Cathode and anode assembly electrical contacts may provide electrical power at any desired levels. Pairs of anode and cathode assembly electrical contacts may provide equal and opposite electrical power; different cathode assembly electrical contacts may provide different levels of electrical power to a same or different modular cathode assembly.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: January 28, 2014
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: Eugene R. Koehl, Laurel A. Barnes, Stanley G. Wiedmeyer, Mark A. Williamson, James L. Willit
  • Patent number: 8598473
    Abstract: A bus bar electrical feedthrough for an electrorefiner system may include a retaining plate, electrical isolator, and/or contact block. The retaining plate may include a central opening. The electrical isolator may include a top portion, a base portion, and a slot extending through the top and base portions. The top portion of the electrical isolator may be configured to extend through the central opening of the retaining plate. The contact block may include an upper section, a lower section, and a ridge separating the upper and lower sections. The upper section of the contact block may be configured to extend through the slot of the electrical isolator and the central opening of the retaining plate. Accordingly, relatively high electrical currents may be transferred into a glovebox or hot-cell facility at a relatively low cost and higher amperage capacity without sacrificing atmosphere integrity.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: December 3, 2013
    Assignee: GE-Hitachi Nuclear Energy Americas LLC
    Inventors: Mark Á Williamson, Stanley G. Wiedmeyer, James L. Willit, Laurel A. Barnes, Robert J. Blaskovitz
  • Publication number: 20130160797
    Abstract: Embodiments include a cathode scraper system and/or method of using the same for removing uranium. The cathode scraper system includes a plurality of cathode assemblies. Each cathode assembly includes a plurality of cathode rods. The cathode scraper system also includes a cathode scraper assembly configured to remove purified uranium deposited on the plurality of cathode rods. The cathode scraper assembly includes a plurality of scrapers arranged in a lattice, and each scraper of the plurality of scrapers is arranged to correspond to a different cathode rod.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Applicant: GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
    Inventors: Mark A. Williamson, Stanley G. Wiedmeyer, James L. Willit, Laurel A. Barnes, Robert J. Blaskovitz
  • Publication number: 20130161198
    Abstract: Embodiments include a cathode power distribution system and/or method of using the same for power distribution. The cathode power distribution system includes a plurality of cathode assemblies. Each cathode assembly of the plurality of cathode assemblies includes a plurality of cathode rods. The system also includes a plurality of bus bars configured to distribute current to each of the plurality of cathode assemblies. The plurality of bus bars include a first bus bar configured to distribute the current to first ends of the plurality of cathode assemblies and a second bus bar configured to distribute the current to second ends of the plurality of cathode assemblies.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Applicant: GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
    Inventors: Mark A. Williamson, Stanley G. Wiedmeyer, Eugene R. Koehl, James L. Bailey, James L. Willit, Laurel A. Barnes, Robert J. Blaskovitz
  • Publication number: 20130161160
    Abstract: A continuous recovery system for an electrorefiner system may include a trough having a ridge portion and a furrow portion. The furrow portion may include a first section and a second section. An inlet and exit pipe may be connected to the trough. The inlet pipe may include an outlet opening that opens up to the first section of the furrow portion of the trough. The exit pipe may include an entrance opening that opens up to the second section of the furrow portion of the trough. A chain may extend through the inlet and exit pipes and along the furrow portion of the trough. The chain may be in a continuous loop form. A plurality of flights may be secured to the chain. Accordingly, the desired product may be continuously harvested from the electrorefiner system without having to halt the electrical power and/or remove the cathode and anode assemblies.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Applicant: GE HITACHI NUCLEAR ENERGY AMERICAS LLC
    Inventors: Mark A. Williamson, Stanley G. Wiedmeyer, James L. Willit, Laurel A. Barnes, Robert J. Blaskovitz
  • Publication number: 20130161186
    Abstract: An electrorefiner system according to a non-limiting embodiment of the present invention may include a vessel configured to maintain a molten salt electrolyte and configured to receive a plurality of alternately arranged cathode and anode assemblies. The anode assemblies are configured to hold an impure nuclear feed material. Upon application of the power system, the impure nuclear feed material is anodically dissolved and a purified metal is deposited on the cathode rods of the cathode assemblies. A scraper is configured to dislodge the purified metal deposited on the cathode rods. A conveyor system is disposed at a bottom of the vessel and configured to remove the dislodged purified metal from the vessel.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Applicant: GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
    Inventors: John F. Berger, Mark A. Williamson, Stanley G. Wiedmeyer, James L. Willit, Laurel A. Barnes, Robert J. Blaskovitz
  • Publication number: 20130161091
    Abstract: A bus bar electrical feedthrough for an electrorefiner system may include a retaining plate, electrical isolator, and/or contact block. The retaining plate may include a central opening. The electrical isolator may include a top portion, a base portion, and a slot extending through the top and base portions. The top portion of the electrical isolator may be configured to extend through the central opening of the retaining plate. The contact block may include an upper section, a lower section, and a ridge separating the upper and lower sections. The upper section of the contact block may be configured to extend through the slot of the electrical isolator and the central opening of the retaining plate. Accordingly, relatively high electrical currents may be transferred into a glovebox or hot-cell facility at a relatively low cost and higher amperage capacity without sacrificing atmosphere integrity.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Applicant: GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
    Inventors: Mark A. Williamson, Stanley G. Wiedmeyer, James L. Willit, Laurel A. Barnes, Robert J. Blaskovitz
  • Publication number: 20130083882
    Abstract: The present invention provides a method for producing Cu67 radioisotope suitable for use in medical applications. The method comprises irradiating a metallic zinc-68 (Zn68) target within a sealed ceramic capsule with a high energy gamma ray beam. After irradiation, the Cu67 is isolated from the Zn68 by any suitable method (e.g. chemical and or physical separation). In a preferred embodiment, the Cu67 is isolated by sublimation of the zinc in a ceramic sublimation tube to afford a copper residue containing Cu67. The Cu67 can be further purified by chemical means.
    Type: Application
    Filed: February 17, 2012
    Publication date: April 4, 2013
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: David A. EHST, James L. WILLIT
  • Publication number: 20120160700
    Abstract: Modular cathode assemblies are useable in electrolytic reduction systems and include a basket through which fluid electrolyte may pass and exchange charge with a material to be reduced in the basket. The basket can be divided into upper and lower sections to provide entry for the material. Example embodiment cathode assemblies may have any shape to permit modular placement at any position in reduction systems. Modular cathode assemblies include a cathode plate in the basket, to which unique and opposite electrical power may be supplied. Example embodiment modular cathode assemblies may have standardized electrical connectors. Modular cathode assemblies may be supported by a top plate of an electrolytic reduction system. Electrolytic oxide reduction systems are operated by positioning modular cathode and anode assemblies at desired positions, placing a material in the basket, and charging the modular assemblies to reduce the metal oxide.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 28, 2012
    Applicant: GE-HITACHI NUCLEAR ENERGY AMERICAS LLC
    Inventors: Stanley G. Wiedmeyer, Laurel A. Barnes, Mark A. Williamson, James L. Willit