Patents by Inventor Louis A. Silks

Louis A. Silks 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: 20110040110
    Abstract: Method of producing C8-C15 hydrocarbons comprising providing a ketone starting material; providing an aldol starting material comprising hydroxymethylfurfural; mixing the ketone starting material and the aldol starting material in a reaction in the presence of a proline-containing catalyst selected from the group consisting of Zn(Pro)2, Yb(Pro)2, and combinations thereof, or a catalyst having one of the structures (I), (H) or (III), and in the presence of a solvent, wherein the solvent comprises water and is substantially free of organic solvents, where (I), (II) and (III) respectively are: where R1 is a C1-C6 alkyl moiety, X?(OH) and n=2. In (III), X may be CH2, sulfur or selenium, M may be Zn, Mg, or a lanthanide, and R1 and R2 each independently may be a methyl, ethyl, phenyl moiety.
    Type: Application
    Filed: August 17, 2009
    Publication date: February 17, 2011
    Applicant: LOS ALAMOS NATIONAL SECURITY, LLC
    Inventors: Louis A. Silks, John C. Gordon, Ruilan WU, Susan Kloek Hanson
  • Publication number: 20070004929
    Abstract: The present invention is directed to labeled compounds of the formula Ar-Z1-Q-Z2 where Ar is an aryl group is selected from the group consisting of 1-naphthyl, substituted 1-naphthyl, 2-naphthyl, substituted 2-naphthyl, and phenyl groups with the structure wherein R1, R2, R3, R4 and R5 are each independently selected from the group consisting of hydrogen, a C1-C4 lower alkyl, a halogen, a phenyl, an alkoxy group and an amino group from the group consisting of NH2, NHR and NRR? where R and R? are each a C1-C4 lower alkyl, Q is selected from the group consisting of 13CH2, 13CDH and 13CD2, and Z1 is selected from the group consisting of —S—, —S(?O)—, —S(?O)2—, —Se—, —Se(?O)—, and —Se(?O)2—, Z2 is selected from the group consisting of —Si(R6R7R8), —O(R9), —Se—Ar, —Se(?O)—Ar, —Se(?O)2—Ar, —S—Ar, —S(?O)—Ar, and —S(?O)2—Ar wherein R6, R7 and R8 are each independently selected from the group consisting of a C1-C4 lower alkyl, R9 is a C1-C4 lower alkyl or an R10—Ar group where R10 is a C1-C4 alkylene group.
    Type: Application
    Filed: June 29, 2005
    Publication date: January 4, 2007
    Inventors: Rodolfo Martinez, Jurgen Schmidt, Marc Alvarez, Louis Silks
  • Patent number: 7018792
    Abstract: A sensor for the detection of tetrameric multivalent neuraminidase within a sample is disclosed, where a positive detection indicates the presence of a target virus within the sample. Also disclosed is a trifunctional composition of matter including a trifunctional linker moiety with groups bonded thereto including (a) an alkyl chain adapted for attachment to a substrate, (b) a fluorescent moiety capable of generating a fluorescent signal, and (c) a recognition moiety having a spacer group of a defined length thereon, the recognition moiety capable of binding with tetrameric multivalent neuraminidase.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: March 28, 2006
    Assignee: The Regents of the University of California
    Inventors: Basil I. Swanson, Xuedong Song, Clifford Unkefer, Louis A. Silks, III, Jurgen G. Schmidt
  • Publication number: 20060003318
    Abstract: A sensor for the detection of tetrameric multivalent neuraminidase within a sample is disclosed, where a positive detection indicates the presence of a target virus within the sample. Also disclosed is a trifunctional composition of matter including a trifunctional linker moiety with groups bonded thereto including (a) an alkyl chain adapted for attachment to a substrate, (b) a fluorescent moiety capable of generating a fluorescent signal, and (c) a recognition moiety having a spacer group of a defined length thereon, the recognition moiety capable of binding with tetrameric multivalent neuraminidase.
    Type: Application
    Filed: May 17, 2005
    Publication date: January 5, 2006
    Inventors: Basil Swanson, Xuedong Song, Clifford Unkefer, Louis Silks, Jurgen Schmidt
  • Patent number: 6893814
    Abstract: A sensor for the detection of tetrameric multivalent neuraminidase within a sample is disclosed, where a positive detection indicates the presence of a target virus within the sample. Also disclosed is a trifunctional composition of matter including a trifunctional linker moiety with groups bonded thereto including (a) an alkyl chain adapted for attachment to a substrate, (b) a fluorescent moiety capable of generating a fluorescent signal, and (c) a recognition moiety having a spacer group of a defined length thereon, the recognition moiety capable of binding with tetrameric multivalent neuraminidase.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: May 17, 2005
    Assignee: The Regents of the University of California
    Inventors: Basil I. Swanson, Xuedong Song, Clifford Unkefer, Louis A. Silks, III, Jurgen G. Schmidt
  • Patent number: 6841675
    Abstract: A novel nucleoside analog is disclosed which comprises a piperazine ring in the place of the ring ribose or deoxyribose sugar. Monomers utilizing a broad variety of nucleobases are disclosed, as well as oligomers comprising the monomers disclosed herein linked by a variety of linkages, including amide, phosphonamide, and sulfonamide linkages. A method of synthesizing the nucleoside analogs is also disclosed.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: January 11, 2005
    Assignee: The Regents of the University of California
    Inventors: Jurgen Schmidt, Louis A. Silks, Ryszard Michalczyk
  • Patent number: 6764673
    Abstract: The present invention is directed to labeled compounds, [2H1, 13C], [2H2, 13C] and [2H3, 13C]methyl aryl sulfones and [2H1, 13C], [2H2, 13C] and [2H3, 13C]methyl aryl sulfoxides, wherein the 13C methyl group attached to the sulfur of the sulfone or sulfoxide includes exactly one, two or three deuterium atoms and the aryl group is selected from the group consisting of 1-naphthyl, substituted 1-naphthyl, 2-naphthyl, substituted 2-naphthyl, and phenyl groups with the structure: wherein R1, R2, R3, R4 and R5 are each independently, hydrogen, a C1-C4 lower alkyl, a halogen, an amino group from the group consisting of NH2, NHR and NRR′ where R and R′ are each a C1-C4 lower alkyl, a phenyl, or an alkoxy group. The present invention is also directed to processes of preparing methyl aryl sulfones and methyl aryl sulfoxides.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: July 20, 2004
    Assignee: The Regents of the University of California
    Inventors: Rodolfo A. Martinez, Marc A. Alvarez, Louis A. Silks, III, Clifford J. Unkefer, Jurgen G. Schmidt
  • Patent number: 6730805
    Abstract: The present invention is directed to labeled compounds, [2-13C]dithane wherein the 13C atom is directly bonded to one or two deuterium atoms. The present invention is also directed to processes of preparing [2-13C]dithane wherein the 13C atom is directly bonded to one or two deuterium atoms. The present invention is also directed to labeled compounds, e.g., [2H1-2, 13C]methanol (arylthio)-, acetates wherein the 13C atom is directly bonded to exactly one or two deuterium atoms.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: May 4, 2004
    Assignee: The Regents of the University of California
    Inventors: Rodolfo A. Martinez, Marc A. Alvarez, Louis A. Silks, III, Clifford J. Unkefer
  • Patent number: 6713044
    Abstract: The present invention is directed to labeled compounds, [2H1, 13C], [2H2, 13C] and [2H3, 13C]methyl aryl sulfides wherein the 13C methyl group attached to the sulfur of the sulfide includes exactly one, two or three deuterium atoms and the aryl group is selected from the group consisting of 1-naphthyl, substituted 1-naphthyl, 2-naphthyl, substituted 2-naphthyl, and phenyl groups with the structure wherein R1, R2, R3, R4, and R5 are each independently, hydrogen, a C1-C4 lower alkyl, a halogen, an amino group from the group consisting of NH2, NHR and NRR′ where R and R′ are each a C1-C4 lower alkyl, a phenyl, or an alkoxy group. The present invention is also directed to processes of preparing [2H1, 13C], [2H2,13C] and [2H3, 13C]methyl aryl sulfides wherein the 13C methyl group attached to the sulfur of the sulfide includes exactly one, two or three deuterium atoms.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: March 30, 2004
    Assignee: The Regents of the University of California
    Inventors: Rodolfo A. Martinez, Marc A. Alvarez, Louis A. Silks, III, Clifford J. Unkefer
  • Publication number: 20040058315
    Abstract: A sensor for the detection of tetrameric multivalent neuraminidase within a sample is disclosed, where a positive detection indicates the presence of a target virus within the sample. Also disclosed is a trifunctional composition of matter including a trifunctional linker moiety with groups bonded thereto including (a) an alkyl chain adapted for attachment to a substrate, (b) a fluorescent moiety capable of generating a fluorescent signal, and (c) a recognition moiety having a spacer group of a defined length thereon, the recognition moiety capable of binding with tetrameric multivalent neuraminidase.
    Type: Application
    Filed: August 28, 2003
    Publication date: March 25, 2004
    Inventors: Basil I. Swansor, Xuedong Song, Clifford Unkefer, Louis A. Silks, Jurgen G. Schmidt
  • Patent number: 6709645
    Abstract: The present invention is directed to labeled compounds, for example, isotopically enriched mustard gas metabolites including: [1,1′,2,2′-13C4]ethane, 1,1′-sulfonylbis[2-(methylthio); [1,1′,2,2′-13C4]ethane, 1-[[2-(methylsulfinyl)ethyl]sulfonyl]-2-(methylthio); [1,1′,2,2′-13C4]ethane, 1,1′-sulfonylbis[2-(methylsulfinyl)]; and, 2,2′-sulfinylbis([1,2-13C2]ethanol of the general formula where Q1 is selected from the group consisting of sulfide (—S—), sulfone (—S(O)—), sulfoxide (—S(O2)—) and oxide (—O—), at least one C* is 13C, X is selected from the group consisting of hydrogen and deuterium, and Z is selected from the group consisting of hydroxide (—OH), and —Q2—R where Q2 is selected from the group consisting of sulfide (—S—), sulfone(—S(O)—), sulfoxide (—S(O2)—) an
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: March 23, 2004
    Assignee: The Regents of the University of California
    Inventors: Rodolfo A. Martinez, Louis A. Silks, III, Clifford J. Unkefer, Robert Atcher
  • Publication number: 20030204108
    Abstract: The present invention is directed to labeled compounds, [2-13C]dithane wherein the 13C atom is directly bonded to one or two deuterium atoms. The present invention is also directed to processes of preparing [2-13C]dithane wherein the 13C atom is directly bonded to one or two deuterium atoms. The present invention is also directed to labeled compounds, e.g., [2H1-2, 13C]methanol (arylthio)-, acetates wherein the 13C atom is directly bonded to exactly one or two deuterium atoms.
    Type: Application
    Filed: April 1, 2003
    Publication date: October 30, 2003
    Inventors: Rodolfo A. Martinez, Marc A. Alvarez, Louis A. Silks, Clifford J. Unkefer
  • Patent number: 6627396
    Abstract: A sensor for the detection of tetrameric multivalent neuraminidase within a sample is disclosed, where a positive detection indicates the presence of a target virus within the sample. Also disclosed is a trifunctional composition of matter including a trifunctional linker moiety with groups bonded thereto including (a) an alkyl chain adapted for attachment to a substrate, (b) a fluorescent moiety capable of generating a fluorescent signal, and (c) a recognition moiety having a spacer group of a defined length thereon, the recognition moiety capable of binding with tetrameric multivalent neuraminidase.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: September 30, 2003
    Assignee: The Regents of the University of California
    Inventors: Basil I. Swanson, Xuedong Song, Clifford Unkefer, Louis A. Silks, III, Jurgen G. Schmidt
  • Publication number: 20030158445
    Abstract: The present invention is directed to labeled compounds, [2H1, 13C], [2H2, 13C] and [2H3, 13C]methyl aryl sulfones and [2H1, 13C], [2H2, 13C] and [2H3, 13C]methyl aryl sulfoxides, wherein the 13C methyl group attached to the sulfur of the sulfone or sulfoxide includes exactly one, two or three deuterium atoms and the aryl group is selected from the group consisting of 1-naphthyl, substituted 1-naphthyl, 2-naphthyl, substituted 2-naphthyl, and phenyl groups with the structure 1
    Type: Application
    Filed: January 14, 2003
    Publication date: August 21, 2003
    Inventors: Rodolfo A. Martinez, Marc A. Alvarez, Louis A. Silks, Clifford J. Unkefer, Jurgen G. Schmidt
  • Publication number: 20030153789
    Abstract: The present invention is directed to labeled compounds, [2H1, 13C], [2H2, 13C] and [2H3, 13C]methyl aryl sulfides wherein the 13C methyl group attached to the sulfur of the sulfide includes exactly one, two or three deuterium atoms and the aryl group is selected from the group consisting of 1-naphthyl, substituted 1-naphthyl, 2-naphthyl, substituted 2-naphthyl, and phenyl groups with the structure 1
    Type: Application
    Filed: January 14, 2003
    Publication date: August 14, 2003
    Inventors: Rodolfo A. Martinez, Marc A. Alvarez, Louis A. Silks, Clifford J. Unkefer
  • Patent number: 6541671
    Abstract: The present invention is directed to labeled compounds, [2-13C]dithiane wherein the 13C atom is directly bonded to one or two deuterium atoms. The present invention is also directed to processes of preparing [2-13C]dithiane wherein the 13C atom is directly bonded to one or two deuterium atoms. The present invention is also directed to labeled compounds, e.g., [2H1−2, 13C]methanol (arylthio)-, acetates wherein the 13C atom is directly bonded to exactly one or two deuterium atoms.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: April 1, 2003
    Assignee: The Regents of the University of California
    Inventors: Rodolfo A. Martinez, Marc A. Alvarez, Louis A. Silks, III, Clifford J. Unkefer
  • Patent number: 6448409
    Abstract: Molecules containing a chiral 1,2-diol unit are synthesized from reactions between aldehydes and N-acyl selones. A chilled N-acyl selone is reacted with a Lewis acid such as TiCl4 and mixed with a tertiary amine such as diisopropylethylamine to generate an enolate solution. Upon further chilling of the enolate solution a desired aldehyde is added and after an acceptable reaction period a quencher is introduced and the product isolated.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: September 10, 2002
    Assignee: The Regents of the University of California
    Inventor: Louis A. Silks, III
  • Patent number: 5344936
    Abstract: Selenium reagents when coupled to a compound containing an asymmetric carbon atom can be used in a highly sensitive method for determination of enantiomeric purity and for stereochemical assignment. Preferred reagents include a selenocarbonyl moiety (Se=C) and a reactive center for coupling to the compound of interest. Particularly preferred selenocarbonyls for use in the invention are chiral selenooxazolidinones of the formula ##STR1## wherein R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are selected from among hydrogen, alkyl of up to 10 carbons and aryl having up to 12 carbon atoms in the ring system. The substituent R.sup.1 is selected to facilitate the formation of a bond between the nitrogen atom of the selenooxazolidinone reagent and the compound of interest. Since the ability of the reagent to resolve enantiomers decreases as the number of bonds between the selenium and the asymmetric carbon increases, the reactive center is preferably located no more than three bonds from the selenium atom.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: September 6, 1994
    Assignee: University of South Carolina
    Inventors: Louis A. Silks, III, R. Bruce Dunlap, Jerome D. Odom
  • Patent number: 5122472
    Abstract: Selenium reagents when coupled to a compound containing an asymmetric carbon atom can be used in a highly sensitive method for determination of enantiomeric purity and for stereochemical assignment. Preferred reagents include a selenocarbonyl moiety (Se.dbd.C) and a reactive center for coupling to the compound of interest. Particularly preferred selenocarbonyls for use in the invention are selenooxazolidinones of the formula ##STR1## wherein R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are selected from among hydrogen, alkyl of up to 10 carbons and aryl having up to 12 carbon atoms in the ring system. The substituent R.sup.1 is selected to facilitate the formation of a bond between the nitrogen atom of the selenooxazolidinone reagent and the compound of interest. Since the ability of the reagent to resolve enantiomers decreases as the number of bonds between the selenium and the asymmetric carbon increases, the reactive center is preferably located no more than three bonds from the selenium atom.
    Type: Grant
    Filed: October 6, 1989
    Date of Patent: June 16, 1992
    Assignee: University of South Carolina
    Inventors: Louis A. Silks, III, R. Bruce Dunlap, Jerome D. Odom