Patents by Inventor James Nangeroni

James Nangeroni 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).

  • Extruded foams made with polylactides that have high molecular weights and high intrinsic viscosities
    Patent number: 8722754
    Abstract: This invention provides an economical process for extruding a PLA resin into a low density foam with a high closed cell content. Excellent quality, low density foam is produced easily and reproducibly. The PLA resin in the foam has a weight average molecular weight of at least 500,000 and an intrinsic viscosity of at least 1.4 deciliters/gram.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: May 13, 2014
    Assignee: NatureWorks LLC
    Inventors: James Nangeroni, Jed Richard Randall
  • Extruded foams made with polylactides that have high molecular weights and high intrinsic viscosities
    Publication number: 20110039962
    Abstract: This invention provides an economical process for extruding a PLA resin into a low density foam with a high closed cell content. Excellent quality, low density foam is produced easily and reproducibly. The PLA resin in the foam has a weight average molecular weight of at least 500,000 and an intrinsic viscosity of at least 1.4 deciliters/gram.
    Type: Application
    Filed: April 24, 2009
    Publication date: February 17, 2011
    Inventors: James Nangeroni, Jed Richard Randall
  • Lactic acid residue containing polymer composition and product having improved stability, and method for preparation and use thereof
    Patent number: 6353086
    Abstract: The invention relates to a lactic acid residue containing polymer composition and product having improved stability and to methods for the preparation and use thereof. The lactic acid residue containing polymer preferably includes a polylactide polymer having a number average molecular weight of between about 25,000 and about 200,000, lactide, if present at all, present in a concentration of less than 0.5 wt % based on the weight of the composition, and deactivating agents. Articles which can be manufactured from the lactic acid residue containing polymer composition include fibers, coated paper, films, moldings, and foam.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: March 5, 2002
    Assignee: Cargill, Incorporated
    Inventors: Jeffrey J. Kolstad, David R. Witzke, Mark H. Hartmann, Eric Stanley Hall, James Nangeroni
  • Coating grade polylactide and coated paper, preparation and uses thereof, and articles prepared therefrom
    Patent number: 6183814
    Abstract: A coated paper product including a paper layer and a polymer layer, wherein the polymer layer includes a polylactide polymer composition having a ratio of Mz to Mn of greater than about 6. The polymer composition, when melted, exhibits a die swell of greater than about 1.25 for a melt flow index of greater than about 2. Polymer lactide compositions, methods of manufacturing the polymer composition and the coated paper product, and articles produced therefrom are also described.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: February 6, 2001
    Assignee: Cargill, Incorporated
    Inventors: James Nangeroni, Mark H. Hartmann, Matthew L. Iwen, Christopher Michael Ryan, Jeffrey J. Kolstad, Kevin T. McCarthy
  • Lactic acid residue containing polymer composition and product having improved stability, and method for preparation and use thereof
    Patent number: 6114495
    Abstract: The invention relates to a lactic acid residue containing polymer composition and product having improved stability and to methods for the preparation and use thereof. The lactic acid residue containing polymer preferably includes a polylactide polymer having a number average molecular weight of between about 25,000 and about 200,000, lactide, if present at all, present in a concentration of less than 0.5 wt % based on the weight of the composition, and deactivating agents. Articles which can be manufactured from the lactic acid residue containing polymer composition include fibers, coated paper, films, moldings, and foam.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: September 5, 2000
    Assignee: Cargill Incorporated
    Inventors: Jeffrey J. Kolstad, David R. Witzke, Mark H. Hartmann, Eric Stanley Hall, James Nangeroni
  • Compostable multilayer structures, methods for manufacture, and articles prepared therefrom
    Patent number: 5849374
    Abstract: A compostable multilayer structure in the form of a film, sheet, laminate, and the like, which comprises a core layer having a first surface and a second surface, a first blocking reducing layer covering the first surface of the core layer, and a second blocking reducing layer covering the second surface of the core layer. The core layer contains a lactic acid residue-containing polymer and has a glass transition temperature (T.sub.g) below about 20.degree. C. The first and second blocking reducing layers include a polymer composition of a hydrolyzable polymer and have a T.sub.g above about 50.degree. C. The multilayer structure can be used for preparing bags and wrappers.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: December 15, 1998
    Assignee: Cargill, Incorporated
    Inventors: Patrick R. Gruber, Jeffrey John Kolstad, James Lunt, Christopher M. Ryan, Ali Zakareya El-Afandi, James Nangeroni, Nancy Uzelac Buehler, Mark Hartmann, Jed Richard Randall, Andrea Lee Brosch