Patents by Inventor Ramchandra R. Nomula

Ramchandra R. Nomula 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).

  • Optically read recording medium and method for making same
    Patent number: 4735878
    Abstract: An information recording medium includes a substrate having first and second sides. A layer of photoresist is deposited on the first side of the substrate. This layer of photoresist has a selected thickness and defines an area of openings therein such that the first side of the substrate is exposed at the openings, the openings being distributed in a pattern indicative of selected stored information. A reflecting layer is deposited on the photoresist layer and on the first side of the substrate at the openings. Both the substrate and the layer of photoresist are adapted to transmit the reading beam such that a portion of the reading beam incident on the second side of the substrate is reflected out of the substrate by the reflecting layer, both in a first region comprising the openings and in a second region between the openings.
    Type: Grant
    Filed: August 28, 1986
    Date of Patent: April 5, 1988
    Assignee: Quixote Corporation
    Inventors: Alan B. Hamersley, Michael W. Goff, Vinai K. Thummalapally, Thomas M. Whitworth, Ramchandra R. Nomula
  • Optically read recording medium and method for making same
    Patent number: 4629668
    Abstract: An information recording medium includes a substrate having first and second sides. A layer of photoresist is deposited on the first side of the substrate. This layer of photoresist has a selected thickness and defines an area of openings therein such that the first side of the substrate is exposed at the openings, the openings being distributed in a pattern indicative of selected stored information. A reflecting layer is deposited on the photoresist layer and on the first side of the substrate at the openings. Both the substrate and the layer of photoresist are adapted to transmit the reading beam such that a portion of the reading beam incident on the second side of the substrate is reflected out of the substrate by the reflecting layer, both in a first region comprising the openings and in a second region between the openings.
    Type: Grant
    Filed: March 12, 1985
    Date of Patent: December 16, 1986
    Assignee: Quixote Corporation
    Inventors: Alan B. Hamersley, Michael W. Goff, Vinai K. Thummalapally, Thomas M. Whitworth, Ramchandra R. Nomula