Patents by Inventor Kumar N. R. Ramohalli

Kumar N. R. Ramohalli 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).

  • Gasifiable carbon-graphite fibers
    Patent number: 4311630
    Abstract: Fine, carbon-graphite fibers do not combust during the combustion of a composite and are expelled into the air as fine conductive particles. Coating of the fibers with a salt of a metal having a work function below 4.2 eV such as an alkaline earth metal salt, e.g., calcium acetate, catalytically enhances combustion of the fibers at temperatures below 1000.degree. C. such that the fibers self-support combustion and burn to produce a non-conductive ash. Fire-polishing the fibers before application of the coating is desirable to remove sizing to expose the carbon surface to the catalyst.
    Type: Grant
    Filed: April 17, 1979
    Date of Patent: January 19, 1982
    Assignee: California Institute of Technology
    Inventors: Marshall F. Humphrey, Kumar N. R. Ramohalli, Warren L. Dowler
  • Silicone containing solid propellant
    Patent number: 4210474
    Abstract: Addition of a small amount, for example 1% by weight, of a liquid silicone oil to a metal containing solid rocket propellant provides a significant reduction in heat transfer to the inert nozzle walls eliminating metal oxide slag collection and blockage of the nozzle and increases burning rate by about 5 to 10% improving ballistic performance.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: July 1, 1980
    Inventors: Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch, Kumar N. R. Ramohalli