Patents by Inventor Aniruddha Moitra

Aniruddha Moitra 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).

  • Patent number: 7524447
    Abstract: One method for making a laminate material comprising a first surface layer comprising resorcinol arylate polyester chain members and a second surface layer suitable for bonding to a substrate, comprises co-extruding a polymeric first surface layer material and a polymeric second surface layer material through a die and into the first nip of a calender roll stack comprising a first surface roll and a second surface roll that define the first nip, to form the laminate material. A nip load in the first nip of greater than or equal to about 400 N/cm can be applied to the laminate, and the laminate material can be collected from the roll stack. The first roll and the second roll can each have a surface smoothness of less than or equal to about 5 micrometers and temperatures of about 40° C. to about 150° C.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: April 28, 2009
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Himanshu Asthana, M. Shoen Davis, Hari K. Harikumar, Martin J. Lindway, Aniruddha Moitra, Chetan J. Parikh, Om Prakash, Michael T. Roland, Robert A. Schiff, Robert W. Walker, Georgios S. Zafiris
  • Publication number: 20070045893
    Abstract: A method of forming a multilayer film is disclosed, comprising coextruding a first layer comprising a weatherable composition, and a second layer comprising a polycarbonate composition comprising a visual effect filler, wherein the first and second layers are formed by flowing each of the weatherable composition and polycarbonate composition through separate flow channels in a multi-manifold coextrusion die. The shear stress during extrusion on the polycarbonate composition is greater than or equal to 40 kilo-Pascals.
    Type: Application
    Filed: August 26, 2005
    Publication date: March 1, 2007
    Inventors: Himanshu Asthana, Aniruddha Moitra, David Rosendale
  • Publication number: 20060017193
    Abstract: One method for making a laminate material comprising a first surface layer comprising resorcinol arylate polyester chain members and a second surface layer suitable for bonding to a substrate, comprises co-extruding a polymeric first surface layer material and a polymeric second surface layer material through a die and into the first nip of a calender roll stack comprising a first surface roll and a second surface roll that define the first nip, to form the laminate material. A nip load in the first nip of greater than or equal to about 400 N/cm can be applied to the laminate, and the laminate material can be collected from the roll stack. The first roll and the second roll can each have a surface smoothness of less than or equal to about 5 micrometers and temperatures of about 40° C. to about 150° C.
    Type: Application
    Filed: July 20, 2004
    Publication date: January 26, 2006
    Inventors: Himanshu Asthana, M. Davis, Hari Harikumar, Martin Lindway, Aniruddha Moitra, Chetan Parikh, Om Prakash, Michael Roland, Robert Schiff, Robert Walker, Georgios Zafiris