Patents by Inventor Gregory Todd Whiteker

Gregory Todd Whiteker 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).

  • Asymmetric catalysts prepared from optically active bisphosphites bridged by achiral diols
    Patent number: 7015360
    Abstract: This invention relates to asymmetric hydroformylation (hf) processes in which a prochiral or chiral compound is contacted in the presence of an optically active metal-ligand complex catalyst to produce an optically active aldehyde or product derived from an optically active aldehyde. The invention encompasses novel ligands and catalysts for use in such processes.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: March 21, 2006
    Assignee: Dow Global Technologies, Inc.
    Inventors: Gregory Todd Whiteker, Jerzy Klosin, Kelli Jo Gardner
  • Asymmetric catalysts prepared from optically active bisphosphites bridged by achiral diols
    Publication number: 20040199023
    Abstract: This invention relates to asymmetric hydroformylation (hf) processes in which a prochiral or chiral compound is contacted in the presence of an optically active metal-ligand complex catalyst to produce an optically active aldehyde or product derived from an optically active aldehyde. The invention encompasses novel ligands and catalysts for use in such processes.
    Type: Application
    Filed: March 28, 2003
    Publication date: October 7, 2004
    Inventors: Gregory Todd Whiteker, Jerzy Klosin, Kelli Jo Gardner
  • Olefin polymerization catalyst composition having increased activity
    Patent number: 6166154
    Abstract: The invention relates to a process for the polymerization of olifins in the presence of an activated catalyst composition comprising a single site catalyst precursor and an activating cocatalyst, which comprises contacting outside of a polymerization reactor a single site catalyst precursor with an activating cocatalyst before, during, or after contacting the single site catalyst precursor with a weakly coordinating electron donor that does not substantially polymerize during either contacting.
    Type: Grant
    Filed: May 15, 1999
    Date of Patent: December 26, 2000
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: John Henry Oskam, Thomas Henry Peterson, David James Schreck, Purna Chand Sishta, Timothy Todd Wenzel, Gregory Todd Whiteker, Clark Curtis Williams
  • Ethylene polymers having superior clarity enhanced toughness, low extractables, and processing ease
    Patent number: 6159617
    Abstract: Ethylene polymers having a) a Polydispersity Index of about 2 to about 4; b) a melt index, MI, and Relaxation Spectrum Index, RSI, such that (RSI)(MI.sup.0.6) is about 2.5 to about 6.5; c) a Crystallizable Chain Length Distribution Index, L.sub.w /L.sub.n, of about 1.0 to about 9; and d) a density, .rho., and a percent haze when fabricated into films such that the percent haze is less than 370.rho.-330, are provided. These ethylene polymers advantageously combine superior clarity and toughness with low extractables and enhanced processing ease.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: December 12, 2000
    Assignee: Univation Technologies, LLC
    Inventors: George Norris Foster, Tong Chen, Robert Harold Vogel, Scott Hanley Wasserman, Day-Chyuan Lee, Walter Thomas Reichle, Frederick John Karol, Gregory Todd Whiteker
  • Olefin polymerization catalyst composition having increased activity
    Patent number: 5912202
    Abstract: A method for preparing an activated catalyst composition comprising a single site catalyst precursor and an activating cocatalyst, which comprises contacting outside of a polymerization reactor a single site catalyst precursor with an activating cocatalyst before, during, or after contacting the single site catalyst precursor with a weakly coordinating electron donor such as 1-hexene.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: June 15, 1999
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: John Henry Oskam, Thomas Henry Peterson, David James Schreck, Purna Chand Sishta, Timothy Todd Wenzel, Gregory Todd Whiteker, Clark Curtis Williams