Patents by Inventor Nagraj Koneripalli

Nagraj Koneripalli 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: 7052762
    Abstract: Multilayer optical films are comprised of materials with glass transition temperatures below room temperature (<30° C.). The high refractive index polymers are unique in that they exhibit mechanical properties similar to other low Tg semi-crystalline polymers, yet have significant birefringence (>0.05) when strain induced oriented. Novel combinations of comonomers for thermoplastics control the rate of crystallinity for improved processability and flexibility, giving the films crease and crumple recovery advantages.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: May 30, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Timothy J. Hebrink, James M. Jonza, Nagraj Koneripalli
  • Patent number: 6905742
    Abstract: An image retaining card is disclosed. An image retaining card in accordance with the present invention may be utilized as an identification card, a driver's license, a passport, and the like. An image retaining card in accordance with the present invention comprises a substrate structure, a cover, and an image receptive material disposed between the substrate structure and the cover. The substrate structure comprises a substrate layer and a substrate tie layer.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: June 14, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Nagraj Koneripalli, Mark F. Schulz, Lori P. Engle, James M. Jonza
  • Publication number: 20030118794
    Abstract: An image retaining card is disclosed. An image retaining card in accordance with the present invention may be utilized as an identification card, a driver's license, a passport, and the like. An image retaining card in accordance with the present invention comprises a substrate structure, a cover, and an image receptive material disposed between the substrate structure and the cover. The substrate structure comprises a substrate layer and a substrate tie layer.
    Type: Application
    Filed: January 31, 2003
    Publication date: June 26, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Nagraj Koneripalli, Mark F. Schulz, Lori P. Engle, James M. Jonza
  • Patent number: 6555213
    Abstract: An image retaining card is disclosed. An image retaining card in accordance with the present invention may be utilized as an identification card, a driver's license, a passport, and the like. An image retaining card in accordance with the present invention comprises a substrate structure, a cover, and an image receptive material disposed between the substrate structure and the cover. The substrate structure comprises a substrate layer and a substrate tie layer.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: April 29, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Nagraj Koneripalli, Mark F. Schulz, Lori P. Engle, James M. Jonza
  • Publication number: 20030072931
    Abstract: Multilayer optical films are comprised of materials with glass transition temperatures below room temperature (<30° C.). The high refractive index polymers are unique in that they exhibit mechanical properties similar to other low Tg semi-crystalline polymers, yet have significant birefringence (>0.05) when strain induced oriented. Novel combinations of comonomers for thermoplastics control the rate of crystallinity for improved processability and flexibility, giving the films crease and crumple recovery advantages.
    Type: Application
    Filed: May 6, 2002
    Publication date: April 17, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Timothy J. Hebrink, James M. Jonza, Nagraj Koneripalli
  • Patent number: 6217252
    Abstract: Flame-spray transportation surface marking method employing a binder material selected from the group consisting of acrylic polymers and copolymers, olefin polymers and copolymers having a number average molecular weight greater than about 10,000, urethane polymers and copolymers, curable epoxy resins, ester polymers and copolymers, and blends thereof, together with a particulate topcoat or particulate filler selected from the group consisting of reflective elements, skid-resistant particles, magnetizable particles, and mixtures thereof, wherein the binder adheres directly to the transportation surface.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: April 17, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Howard R. Tolliver, Suman K. Patel, Thomas V. Kusilek, Nagraj Koneripalli