Patents by Inventor Kent D. Abney

Kent D. Abney 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: 6830738
    Abstract: The synthesis of actinide tetraborides including uranium tetraboride (UB4), plutonium tetraboride (PuB4) and thorium tetraboride (ThB4) by a solid-state metathesis reaction are demonstrated. The present method significantly lowers the temperature required to ≦850° C. As an example, when UCl4 is reacted with an excess of MgB2, at 850° C., crystalline UB4 is formed. Powder X-ray diffraction and ICP-AES data support the reduction of UCl3 as the initial step in the reaction. The UB4 product is purified by washing water and drying.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: December 14, 2004
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Anthony J. Lupinetti, Eduardo Garcia, Kent D. Abney
  • Patent number: 5666641
    Abstract: Preparation and use of polymeric materials containing hydrophobic anions and plasticizers for extraction of cesium and strontium. The use of polymeric materials containing plasticizers which are solvents for hydrophobic anions such as derivatives of cobalt dicarbollide or tetraphenylborate which are capable of extracting cesium and strontium ions from aqueous solutions in contact with the polymeric materials, is described. The polymeric material may also include a synergistic agent for a given ion like polyethylene glycol or a crown ether, for removal of radioactive isotopes of cesium and strontium from solutions of diverse composition and, in particular, for solutions containing large excess of sodium nitrate.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: September 9, 1997
    Inventors: Kent D. Abney, Scott A. Kinkead, Caroline F. V. Mason, Jiri Rais
  • Patent number: 5631390
    Abstract: A method for selectively adding chlorine, bromine, or iodine to cobalt dicarbollide anions by means of electrophilic substitution reactions. Halogens are added only to the B10 and B10' positions of the anion. The process involves use of hypohalous acid or N-halosuccinimide or gaseous chlorine in the presence of iron.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: May 20, 1997
    Assignee: The Regents of the University of California
    Inventors: Paul K. Hurlburt, Kent D. Abney, Scott A. Kinkead
  • Patent number: 5603074
    Abstract: Preparation and use of tetra-C-alkyl cobalt dicarbollide for extraction of cesium and strontium into hydrocarbon solvents. Tetra-C-alkyl derivatives of cobalt dicarbollide, Co(C.sub.2 R.sub.2 B.sub.9 H.sub.9).sub.2.sup.- (CoB.sub.2 R.sub.4.sup.- ; R=CH.sub.3 and C.sub.6 H.sub.13) are demonstrated to be significant cesium and strontium extractants from acidic and alkaline solutions into non-toxic organic solvent systems. Extractions using mesitylene and diethylbenzene are compared to those with nitrobenzene as the organic phase. CoB.sub.2 -hexyl.sub.4.sup.- in diethylbenzene shows improved selectivity (10.sup.4) for Cs over Na in acidic solution. In dilute alkaline solution, CoB.sub.2 -hexyl.sub.4.sup.- extracts Cs less efficiently, but more effectively removes Sr from higher base concentrations. A general synthesis of tetra-C-alkyl cobalt dicarbollides is described.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: February 11, 1997
    Assignee: The Regents of the University of California
    Inventors: Rebecca L. Miller, Anthony B. Pinkerton, Kent D. Abney, Scott A. Kinkead