Patents by Inventor Lalgudl V. Natarajan

Lalgudl V. Natarajan 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: 7413679
    Abstract: The process described herein offers the optimizing of performance parameters of holograms, such as reducing scattering effects in a polymer-dispersed liquid crystal optical element. In the process, an interfacial tension agent is added to a polymer-dispersed liquid crystal material. The polymer-dispersed liquid crystal material has a first material selected from the group consisting of a reactive ionic material, an aromatic material, a polypyrrole, and an acrylated or methacrylated acid of the type H2CCH—(CO)O—R—(CO)OH, where R is a linear or branched alkyl chain. The polymer-dispersed liquid crystal material also has at least one type of liquid crystal material, a photoinitiator dye, and a co-initiator. The polymer-dispersed liquid crystal material is subjected to a polymerization. The interfacial tension agent reduces the size of liquid crystal droplets formed within the polymer-dispersed liquid crystal optical element during polymerization.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: August 19, 2008
    Assignee: Science Applications International Corporation
    Inventors: Richard L. Sutherland, Lalgudl V. Natarajan, Robert T. Pogue, Christina K. Shepherd, Donna M. Brandelik