Patents by Inventor Sandra Denise Schregenberger

Sandra Denise Schregenberger 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).

  • Plasticized polyolefin compositions
    Patent number: 8217112
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: July 10, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Bruce R. Lundmark, Bryan R. Chapman, Sandra Denise Schregenberger, David J. Lohse
  • Plasticized polyolefin compositions
    Patent number: 8211968
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: July 3, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Henry Wu-Hsiang Yang, Wen Li, Bruce R. Lundmark, Chon-Yie Lin, Chia Yung Cheng, Bryan R. Chapman, Petra Eiselt, Galina Ourieva, Manika Varma-Nair, James N. Coffey, Sandra Denise Schregenberger, David J. Lohse, Norman Yang, Jeffrey Theodore Zudock, Robert Jay Wittenbrink
  • Articles from plasticized polyolefin compositions
    Patent number: 7875670
    Abstract: The present invention relates to articles made from plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: January 25, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Chon-Yie Lin, Wen Li, Bryan R. Chapman, Michael B. Kelly, Bruce R. Lundmark, David J. Lohse, Henry W. Yang, Sandra Denise Schregenberger
  • Plasticized Polyolefin Compositions
    Publication number: 20100152346
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Application
    Filed: January 25, 2010
    Publication date: June 17, 2010
    Inventors: Henry Wu-Hsiang Yang, Wen Li, Bruce R. Lundmark, Chon-Yie Lin, Chia Yung Cheng, Bryan R. Chapman, Petra Eiselt, Galina Ourieva, Manika Varma-Nair, James N. Coffey, Sandra Denise Schregenberger, David J. Lohse, Norman Yang, Jeffrey Theodore Zudock, Robert Jay Wittenbrink
  • Plasticized Polyolefin Compositions
    Publication number: 20100035498
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Application
    Filed: October 19, 2009
    Publication date: February 11, 2010
    Inventors: Bruce R. Lundmark, Bryan R. Chapman, David J. Lohse, Sandra Denise Schregenberger
  • Plasticized polyolefin compositions
    Patent number: 7652093
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: January 26, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Henry Wu-Hsiang Yang, Wen Li, Bruce R. Lundmark, Chon-Yie Lin, Chia Yung Cheng, Bryan R. Chapman, Petra Eiselt, Galina Ourieva, Manika Varma-Nair, James N. Coffey, Sandra Denise Schregenberger, David J. Lohse, Norman Yang, Jeffrey Theodore Zudock, Robert Jay Wittenbrink
  • Plasticized polyolefin compositions
    Patent number: 7619026
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: November 17, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Henry Wu-Hsiang Yang, Wen Li, Bruce R. Lundmark, Chon-Yie Lin, Chia Yung Cheng, Bryan R. Chapman, Petra Eiselt, Galina Ourieva, Manika Varma-Nair, James N. Coffey, Sandra Denise Schregenberger, David J. Lohse, Norman Yang, Jeffrey Theodore Zudock, Robert Jay Wittenbrink
  • Plasticized polyolefin compositions
    Patent number: 7619027
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: November 17, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Bruce R. Lundmark, Bryan R. Chapman, Sandra Denise Schregenberger, David J. Lohse
  • Articles from plasticized polyolefin compositions
    Patent number: 7531594
    Abstract: The present invention relates to articles made from plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: May 12, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Chon-Yie Lin, Wen Li, Bryan R. Chapman, Michael B. Kelly, Bruce R. Lundmark, David J. Lohse, Henry Wu-Hsiang Yang, Sandra Denise Schregenberger
  • Articles from plasticized polyolefin compositions
    Publication number: 20040260001
    Abstract: The present invention relates to articles made from plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Application
    Filed: February 19, 2004
    Publication date: December 23, 2004
    Inventors: Chon-Yie Lin, Wen Li, Bryan R. Chapman, Michael B. Kelly, Bruce R. Lundmark, David J. Lohse, Henry Wu-Hsiang Yang, Sandra Denise Schregenberger
  • Crop oil adjuvants
    Publication number: 20040192556
    Abstract: An adjuvant crop oil concentrate comprising a polyalphaolefin and a surfactant. A method of using the crop oil concentrate in conjunction with a pesticide. A method of reducing or eliminating undesired plants by post-emergence application of a crop oil concentrate comprising a polyalphaolefin and a surfactant in conjunction with an herbicide.
    Type: Application
    Filed: December 17, 2003
    Publication date: September 30, 2004
    Inventors: Sandra Denise Schregenberger, Bruce R. Lundmark, Geoffrey Peter Matheson, John Edmund Drew, John A. Webber
  • Plasticized polyolefin compositions
    Publication number: 20040106723
    Abstract: The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
    Type: Application
    Filed: August 12, 2003
    Publication date: June 3, 2004
    Inventors: Henry Wu-Hsiang Yang, Wen Li, Bruce R. Lundmark, Chon-Yie Lin, Chia Yung Cheng, Bryan R. Chapman, Petra Eiselt, Galina Ourieva, Manika Varma-Nair, James N. Coffey, Sandra Denise Schregenberger, David J. Lohse, Norman Yang, Jeffrey Theodore Zudock, Robert Jay Wittenbrink
  • Metallocene catalyst compositions, processes for making polyolefin resins using such catalyst compositions, and products produced thereby
    Publication number: 20020160908
    Abstract: A catalyst composition for the polymerization of one or more 1-olefins (e.g., ethylene) comprises a transition metal catalyst precursor and a cocatalyst, the transition metal catalyst precursor comprising a contact product of an unsubstituted metallocene compound and an aluminum alkyl compound in a hydrocarbon solvent solution. In another embodiment, the transition metal catalyst precursor is bimetallic and contains a non-metallocene transition metal catalyst component. When a bimetallic catalyst precursor is used, the resin product exhibits improved properties, and has a bimodal molecular weight distribution, long chain branching (LCB), and good bubble stability.
    Type: Application
    Filed: April 1, 2002
    Publication date: October 31, 2002
    Inventors: Robert Ivan Mink, Thomas Edward Nowlin, Sandra Denise Schregenberger, Pradeep P. Shirodkar, Kenneth George Schurzky
  • Premium pipe resins
    Patent number: 6403181
    Abstract: The invention relates to the production of high performance conduits. The invention includes the high performance conduits, the polyethylene resin used to make them, and the process for producing the resin which produces a resin with properties which are required, in accordance with the invention to yield the performance characteristics of the resin in conduits. The resin used in accordance with the invention exhibits a bimodal molecular weight distribution or broad molecular weight distribution and is of high molecular weight.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: June 11, 2002
    Assignee: Mobil Oil Corporation
    Inventors: David B. Barry, Vincent Joseph Crotty, Brian J. Egan, Robert I. Mink, Thomas Edward Nowlin, Sandra Denise Schregenberger, Kenneth George Schurzky, Pradeep Pandurang Shirodkar
  • Catalyst for the manufacture of polyethylene with a broad or bimodal molecular weight distribution
    Patent number: 6051525
    Abstract: A catalyst composition is described for preparing a high activity catalyst in silica which produces, in a single reactor, polyethylene with a broad or bimodal molecular weight distribution. The catalyst is prepared from the interaction of silica, previously calcined at 600.degree. C., with dibutylmagnesium, 1-butanol and titanium tetrachloride and a solution of methylalumoxane and ethylenebis[1-indenyl]zirconium dichloride.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: April 18, 2000
    Assignee: Mobil Corporation
    Inventors: Frederick Yip-Kwai Lo, Robert I. Mink, Thomas Edward Nowlin, Sandra Denise Schregenberger, Pradeep Pandurang Shirodkar