Patents by Inventor Christian P. Lenges

Christian P. Lenges 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: 8394981
    Abstract: The invention provides a process for hydrocyanation, comprising: contacting 2-pentenenitrile with hydrogen cyanide at a temperature in the range of about 0° C. to about 150° C. in the presence of at least one Lewis acid promoter and a catalyst precursor composition, wherein the catalyst precursor composition comprises a zero-valent nickel and at least one bidentate phosphite ligand selected from a member of the group represented by Formula I and Formula II, in which all like reference characters have the same meaning, except as further explicitly limited: wherein R1 and R5 are independently selected from the group consisting of C1 to C5 hydrocarbyl; and R2, R3, R4, R6, R7 and R8 are independently selected from the group consisting of H and C1 to C4 hydrocarbyl.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: March 12, 2013
    Assignee: Invista North America S.A R.L.
    Inventors: James Michael Garner, Christian P. Lenges, Ronald J. McKinney, Wilson Tam
  • Publication number: 20120035387
    Abstract: The invention provides a process for hydrocyanation, comprising: contacting 2-pentenenitrile with hydrogen cyanide at a temperature in the range of about 0° C. to about 150° C. in the presence of at least one Lewis acid promoter and a catalyst precursor composition, wherein the catalyst precursor composition comprises a zero-valent nickel and at least one bidentate phosphite ligand selected from a member of the group represented by Formula I and Formula II, in which all like reference characters have the same meaning, except as further explicitly limited: wherein R1 and R5 are independently selected from the group consisting of C1 to C5 hydrocarbyl; and R2, R3, R4, R6, R7 and R8 are independently selected from the group consisting of H and C1 to C4 hydrocarbyl.
    Type: Application
    Filed: February 7, 2011
    Publication date: February 9, 2012
    Applicant: INVISTA NORTH AMERICA S.A R.L.
    Inventors: James Michael Garner, Christian P. Lenges, Ronald J. McKinney, Wilson Tam
  • Patent number: 7919646
    Abstract: The invention provides a process for hydrocyanation, comprising: contacting 2-pentenenitrile with hydrogen cyanide at a temperature in the range of about 0° C. to about 150° C. in the presence of at least one Lewis acid promoter and a catalyst precursor composition, wherein the catalyst precursor composition comprises a zero-valent nickel and at least one bidentate phosphite ligand selected from a member of the group represented by Formula I and Formula II, in which all like reference characters have the same meaning, except as further explicitly limited: wherein R1 and R5 are independently selected from the group consisting of C1 to C5 hydrocarbyl; and R2, R3, R4, R6, R7 and R8 are independently selected from the group consisting of H and C1 to C4 hydrocarbyl.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: April 5, 2011
    Assignee: Invista North America S.A R.L.
    Inventors: James Michael Garner, Christian P. Lenges, Ronald J. McKinney, Wilson Tam
  • Patent number: 7709203
    Abstract: Primers have been isolated that are diagnostic for the detection of Vibrio harveyi. The primers are based on a portion of the Vibrio harveyi LuxR gene and may be used in primer directed amplification or nucleic acid hybridization assay methods.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: May 4, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Richard C. Ebersole, Jianzhong Zhang, Mario W. Chen, Christian P. Lenges
  • Publication number: 20080015379
    Abstract: The invention provides a process for hydrocyanation, comprising: contacting 2-pentenenitrile with hydrogen cyamide at a temperature in the range of about 0° C. to about 150° C. in the presence of at least one Lewis acid promoter and a catalyst precursor composition, wherein the catalyst precursor composition comprises a zero-valent nickel and at least one bidentate phosphite ligand selected from a member of the group represented by Formula I and Formula II, in which all like reference characters have the same meaning, except as further explicitly limited: wherein R1 and R5 are independently selected from the group consisting of C1 to C5 hydrocarbyl; and R2, R3, R4, R6, R7 and R8 are independently selected from the group consisting of H and C1 to C4 hydrocarbyl.
    Type: Application
    Filed: July 12, 2007
    Publication date: January 17, 2008
    Applicant: INVISTA NORTH AMERICA S.A R.L.
    Inventors: JAMES MICHAEL GARNER, Christian P. Lenges, Ronald J. McKinney, Wilson Tam
  • Patent number: 6906218
    Abstract: Disclosed herein are methods for preparing nitrile derivatives and their corresponding amines from 1-,2-,4-trivinylcyclohexane by hydrocyanation, followed by hydrogenation. Also disclosed are novel compounds used in the methods described herein.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: June 14, 2005
    Assignee: Invista North America S.a.r.l.
    Inventors: Alan M. Allgeier, Christian P. Lenges
  • Patent number: 6846945
    Abstract: Disclosed herein are processes for hydrocyanation and isomerization of olefins by using at least one multidentate phosphonite ligands, including organometallic phosphonite ligands with a Group VIII metal or Group VIII metal compound, and optionally, a Lewis acid promoter.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: January 25, 2005
    Assignee: Invista North America S.a.r.l.
    Inventors: Christian P. Lenges, Helen S. M. Lu, Joachim C. Ritter
  • Publication number: 20040122252
    Abstract: Disclosed herein are methods for preparing nitrile derivatives and their corresponding amines from 1-,2-,4-trivinylcyclohexane by hydrocyanation, followed by hydrogenation. Also disclosed are novel compounds used in the methods described herein.
    Type: Application
    Filed: December 18, 2002
    Publication date: June 24, 2004
    Inventors: Alan M. Allgeier, Christian P. Lenges, Rafael Shapiro, Wilson Tam
  • Patent number: 6737539
    Abstract: Disclosed herein are processes for hydrocyanation and isomerization of olefins by using at least one multidentate phosphonite ligands, including organometallic phosphonite ligands with a Group VIII metal or Group VIII metal compound, and optionally, a Lewis acid promoter.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: May 18, 2004
    Assignee: E. I. DuPont de Nemours and Company
    Inventors: Christian P. Lenges, Helen S. M. Lu, Joachim C. Ritter
  • Patent number: 6660877
    Abstract: Disclosed herein are processes for hydrocyanation and isomerization of olefins by using at least one multidentate phosphonite ligands, including organometallic phosphonite ligands with a Group VIII metal or Group VIII metal compound, and optionally, a Lewis acid promoter.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: December 9, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Christian P. Lenges, Helen S. M. Lu, Joachim C. Ritter
  • Publication number: 20030212288
    Abstract: Disclosed herein are processes for hydrocyanation and isomerization of olefins by using at least one multidentate phosphonite ligands, including organometallic phosphonite ligands with a Group VIII metal or Group VIII metal compound, and optionally, a Lewis acid promoter.
    Type: Application
    Filed: June 4, 2003
    Publication date: November 13, 2003
    Inventors: Christian P. Lenges, Helen S. M. Lu, Joachim C. Ritter
  • Publication number: 20030195371
    Abstract: Disclosed herein are processes for hydrocyanation and isomerization of olefins by using at least one multidentate phosphonite ligands, including organometallic phosphonite ligands with a Group VIII metal or Group VIII metal compound, and optionally, a Lewis acid promoter.
    Type: Application
    Filed: March 7, 2002
    Publication date: October 16, 2003
    Inventors: Christian P. Lenges, Joachim C. Ritter
  • Publication number: 20030195372
    Abstract: Disclosed herein are processes for hydrocyanation and isomerization of olefins by using at least one multidentate phosphonite ligands, including organometallic phosphonite ligands with a Group VIII metal or Group VIII metal compound, and optionally, a Lewis acid promoter.
    Type: Application
    Filed: June 4, 2003
    Publication date: October 16, 2003
    Inventors: Christian P. Lenges, Helen S. M. Lu, Joachim C. Ritter