Patents by Inventor Bala Praveen Chakkravarthy Raghupathy

Bala Praveen Chakkravarthy Raghupathy 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: 8425809
    Abstract: A method of forming granules, the method including forming a suspension of a nanopowder such as a nano zirconia powder containing yttria. The powder is formed from a suspension, and freon is added directly to the suspension as an additive. The suspension is then granulated by spray freeze drying, and the freon subsequently removed by heat treatment. The voids left by the vacated freon provide meso, micro and macro flaws or structural defects in the granules.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: April 23, 2013
    Assignee: Loughborough University
    Inventors: Annapoorani Ketharam, Balasubramaniam Vaidhyanathan, Bala Praveen Chakkravarthy Raghupathy, Jonathan Graham Peel Binner
  • Publication number: 20110241236
    Abstract: A method of forming granules, the method including forming a suspension of a nanopowder such as a nano zirconia powder containing yttria. The powder is formed from a suspension, and freon is added directly to the suspension as an additive. The suspension is then granulated by spray freeze drying, and the freon subsequently removed by heat treatment. The voids left by the vacated freon provide meso, micro and macro flaws or structural defects in the granules.
    Type: Application
    Filed: October 14, 2009
    Publication date: October 6, 2011
    Inventors: Annapoorani Ketharam, Balasubramaniam Vaidhyanathan, Bala Praveen Chakkravarthy Raghupathy, Jonathan Graham Peel Binner