Patents by Inventor J. A. Sekhar

J. A. Sekhar 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).

  • Convective system
    Publication number: 20040134480
    Abstract: We have discovered a simple electrical assembly of heating coils which may be arranged to produce hot air or gas up to 1500° C. This assembly is the invention claimed in this patent.
    Type: Application
    Filed: November 10, 2003
    Publication date: July 15, 2004
    Applicant: Micropyretics Heaters International (MHI) Inc.
    Inventors: Ramgopal Vissa, Ganta Reddy, J. A. Sekhar
  • Treated carbon cathodes for aluminum production, the process of making thereof and the process of using thereof
    Patent number: 5378327
    Abstract: To improve its resistance to penetration and degradation by sodium, a carbon cathode for use in aluminium production by the electrolysis of alumina dissolved in a cryolite-based molten electrolyte is pre-treated with a solution, suspension or melt of a compound of lithium, sodium and/or potassium. This pre-treatment takes place prior to, during or after forming the cathode but before use thereof. The entire carbon cathode, or only that part of the carbon which is nearest to the active cathode surface is treated, making it more resistant to penetration by components of the molten electrolyte of aluminium.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: January 3, 1995
    Assignee: Moltech Invent S.A.
    Inventors: J. A. Sekhar, T. Zheng, deceased, J. J. Duruz