Patents by Inventor Helen S. M. Lu

Helen S. M. Lu 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).

  • 3-Alkylated-5,5',6,6',7,7',8,8'-octahydro-2,2'-binaphthols and 3,3'-dialkylated- 5,5',6,6',7,7',8,8'-octahydro-2,2'-binaphthols and processes for making them
    Publication number: 20040054237
    Abstract: The compositions 3-alkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol and 3,3′-dialkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol are disclosed, as well as various processes for making them, all involving the alkylation of 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol.
    Type: Application
    Filed: July 23, 2003
    Publication date: March 18, 2004
    Inventors: Helen S.M. Lu, Weiming Qiu, Rafael Shapiro
  • Phosphonite ligands and their use in hydrocyanation
    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
  • Phosphonite ligands and their use in hydrocyanation
    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
  • Phosphonite ligands and their use in hydrocyanation
    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
  • 3-Alkylated-5,5',6,6',7,7,'8,8'-octahydro-2,2'-binaphthols and 3,3'-dialkylated-5,5',6,6',7,7',8,8'-octahydro-2,2'-binaphthols and processes for making them
    Publication number: 20030100803
    Abstract: The compositions 3-alkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol and 3,3′-dialkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol are disclosed, as well as various processes for making them, all involving the alkylation of 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol.
    Type: Application
    Filed: November 26, 2001
    Publication date: May 29, 2003
    Inventors: Helen S.M. Lu, Weiming Qiu, Rafael Shapiro
  • Bidentate organic phosphite ligands and compositions
    Patent number: 6399534
    Abstract: This invention relates to multidentate organic phosphite ligands and their compositions with Group VIII metals.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: June 4, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Emilio E. Bunel, Helen S. M. Lu, Kenneth Gene Moloy, Shawn H. Phillips, Kathryn E. Schwiebert, Wilson Tam, Nora Radu
  • Multidentate phosphite ligands, catalytic compositions containing such ligands and catalytic processes utilizing such catalytic compositions
    Patent number: 6380421
    Abstract: Hydrocyanation reactions employing multidentate phosphite ligands and multidentate phosphite ligands are disclosed. The ligands have phenyl containing substituents attached to the ortho position of the terminal phenol group and/or attached to the ortho position of the bridging group. Catalyst compositions havng such ligands achieve 97% or greater distribution in hydrocyanation.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: April 30, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Helen S. M. Lu, Nora Radu
  • Hydroformylation of acyclic monoethylenically unsaturated compounds to corresponding terminal aldehydes
    Publication number: 20020013503
    Abstract: A process for hydroformylatiog acyclic monoethylenically unsaturated compounds to corresponding terminal aldehydes using a Group VIII transition metal and selected multidentate phosphite ligands.
    Type: Application
    Filed: July 26, 2001
    Publication date: January 31, 2002
    Inventors: Emilio E. Bunel, Helen S.M. Lu, Kenneth Gene Moloy, Shawn H. Phillips, Kathryn E. Schweibert, Wilson Tam, Nora Radu
  • Hydroformylation of acyclic monoethylenically unsaturated compounds to corresponding terminal aldehydes
    Patent number: 6307107
    Abstract: A process for hydroformylatiog acyclic monoethylenically unsaturated compounds to corresponding terminal aldehydes using a Group VIII transition metal and selected multidentate phosphite ligands.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: October 23, 2001
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Emilio E. Bunel, Helen S. M. Lu, Kenneth Gene Moloy, Shawn H. Phillips, Kathryn E. Schwiebert, Wilson Tam, Nora Radu