Patents by Inventor Sidlagata V. Sreenivasan

Sidlagata V. Sreenivasan 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: 7338275
    Abstract: The present invention is directed to a template having a body including a surface with first and second regions. The first region has first wetting characteristics for a given material and the second region has second wetting characteristics for the given material. The first wetting characteristics differ from the second wetting characteristics. Specifically, the first region is formed from a surface treatment layer with a first surface energy to provide the first wetting characteristics. The second region is exposed portions of the body, typically quartz of fused silica, having a second surface energy associated therewith. The second surface energy is greater than the first surface energy to provide the second region with the second wetting characteristics.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: March 4, 2008
    Assignee: Molecular Imprints, Inc.
    Inventors: Byung Jin Choi, Mario J. Meissl, Sidlagata V. Sreenivasan, Michael P. C. Watts
  • Patent number: 6932934
    Abstract: The present invention is directed to methods for patterning a substrate by imprint lithography. An imprint lithography method includes placing a curable liquid on a substrate. A template may be contacted with the curable liquid. Surface forces at the interface of the curable liquid and the template cause the curable liquid to gather in an area defined by a lower surface of the template. Alternately, the curable liquid may fill one or more relatively shallow recesses in the template and the area under the template lower surface. Activating light is applied to the curable liquid to form a patterned layer on the substrate.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: August 23, 2005
    Assignee: Molecular Imprints, Inc.
    Inventors: Byung Jin Choi, Mario J. Meissl, Sidlagata V. Sreenivasan, Michael P. C. Watts
  • Publication number: 20040007799
    Abstract: Described are methods for patterning a substrate by imprint lithography. An imprint lithography method includes placing a curable liquid on a substrate. A template may be contacted with the curable liquid. Surface forces at the interface of the curable liquid and the template cause the curable liquid to gather in an area defined by a lower surface of the template. Alternately, the curable liquid may fill one or more relatively shallow recesses in the template and the area under the template lower surface. Activating light is applied to the curable liquid to form a patterned layer on the substrate.
    Type: Application
    Filed: July 11, 2002
    Publication date: January 15, 2004
    Inventors: Byung Jin Choi, Mario J. Meissl, Sidlagata V. Sreenivasan, Michael P.C. Watts