Patents by Inventor Raja Kalyanaraman

Raja Kalyanaraman 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).

  • Microwave plasma chemical synthesis of ultrafine powders
    Publication number: 20030172772
    Abstract: The present invention relates to the production of ultrafine powders using a microwave plasma apparatus and chemical synthesis technique. Microwaves generated by a magnetron (1) are passed through waveguides (2) before they arrive at the head of a plasmatron (3). These high energy microwaves ionize a plasma gas, thus releasing large amounts of energy. The energy thus released is utilized to initiate and sustain chemical reactions between the desired elements being pumped in a spiral pattern into the plasmatron (3). The reaction products are quenched rapidly in a reactor column (4) into ultrafine powders.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 18, 2003
    Applicant: Materials Modification, Inc.
    Inventors: Krupashankara M. Sethuram, Raja Kalyanaraman
  • Microwave plasma chemical synthesis of ultrafine powders
    Publication number: 20020112794
    Abstract: The present invention relates to the production of ultrafine powders using a microwave plasma apparatus and chemical synthesis technique. Microwaves generated by a magnetron (1) are passed through waveguides (2) before they arrive at the head of a plasmatron (3). These high energy microwaves ionize a plasma gas, thus releasing large amounts of energy. The energy thus released is utilized to initiate and sustain chemical reactions between the desired elements being pumped in a spiral pattern into the plasmatron (3). The reaction products are quenched rapidly in a reactor column (4) into ultrafine powders.
    Type: Application
    Filed: April 4, 2002
    Publication date: August 22, 2002
    Applicant: Materials Modification, Inc.
    Inventors: Krupashankara M. Sethuram, Raja Kalyanaraman
  • Microwave plasma chemical synthesis of ultrafine powders
    Patent number: 6409851
    Abstract: The present invention relates to the production of ultrafine powders using a microwave plasma apparatus and chemical synthesis technique. Microwaves generated by a magnetron (1) are passed through waveguides (2) before they arrive at the head of a plasmatron (3). These high energy microwaves ionize a plasma gas, thus releasing large amounts of energy. The energy thus released is utilized to initiate and sustain chemical reactions between the desired elements being pumped in a spiral pattern into the plasmatron (3). The reaction products are quenched rapidly in a reactor column (4) into ultrafine powders.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: June 25, 2002
    Assignee: Materials Modifciation, Inc.
    Inventors: Krupashankara M. Sethuram, Raja Kalyanaraman