Patents by Inventor William Todd Rogers

William Todd Rogers 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).

  • Rotational molded article formed from high molecular weight polyamides
    Patent number: 8309190
    Abstract: The invention relates to an article formed by a rotational molding process, having at least one layer formed from a high molecular weight polyamide. The high molecular weight polyamide is one having a molecular weight in the range of 20,000 to 35,000 and also having an inherent viscosity of 1.05-1.60 dL/g. Rotomolded articles having a high molecular weight polyamide layer have better low-temperature impact performance compared to articles formed from lower molecular weight polyamides.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: November 13, 2012
    Assignee: Arkema Inc.
    Inventors: John C. Chen, Barbara Ramfel, Bruce Clay, William Todd Rogers
  • TRANSPARENT OR TRANSLUCENT EXTRUDED POLYAMIDE
    Publication number: 20120223453
    Abstract: The invention relates to a process for forming an extruded transparent or translucent polyamide article including melt calendering to improve the physical properties and optical clarity. The polyamide article is a sheet, film, or profile.
    Type: Application
    Filed: May 16, 2012
    Publication date: September 6, 2012
    Applicant: Arkema Inc.
    Inventors: Elizabeth E. Grimes, William Todd Rogers, Claire Isabelle Michalowicz
  • ROTATIONAL MOLDED ARTICLE FORMED FROM HIGH MOLECULAR WEIGHT POLYAMIDES
    Publication number: 20120027971
    Abstract: The invention relates to an article formed by a rotational molding process, having at least one layer formed from a high molecular weight polyamide. The high molecular weight polyamide is one having a molecular weight in the range of 20,000 to 35,000 and also having an inherent viscosity of 1.05-1.60 dL/g. Rotomolded articles having a high molecular weight polyamide layer have better low-temperature impact performance compared to articles formed from lower molecular weight polyamides.
    Type: Application
    Filed: February 24, 2010
    Publication date: February 2, 2012
    Applicant: Arkema Inc.
    Inventors: John C. Chen, Barbara Ramfel, Bruce Clay, William Todd Rogers
  • TRANSPARENT OR TRANSLUCENT EXTRUDED POLYAMIDE
    Publication number: 20100203346
    Abstract: The invention relates to extruded transparent or translucent article that have been melt calendered to improve the physical properties and optical clarity. The polyamide article is a sheet, film, or profile.
    Type: Application
    Filed: June 26, 2008
    Publication date: August 12, 2010
    Applicant: Arkema Inc.
    Inventors: Elizabeth E. Grimes, William Todd Rogers, Claire Michalowicz