Patents by Inventor Rajeev S. Rao

Rajeev S. Rao 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).

  • Process for the preparation of doped pentasil-type zeolites using doped faujasite seeds
    Patent number: 6936239
    Abstract: Process for the preparation of doped pentasil-type zeolite, which process comprises the steps of: a) preparing an aqueous precursor mixture comprising a silicon source, an aluminum source, doped faujasite seeds, and another type of seeding material, and b) thermally treating the precursor mixture to form a doped pentasil-type zeolite. This process results in doped pentasil-type zeolites in a shorter crystallization time compared to prior art processes.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: August 30, 2005
    Assignee: Akzo Novel NV
    Inventor: Rajeev S. Rao
  • Catalyst for the production of light olefins
    Publication number: 20040110629
    Abstract: The invention comprises a catalyst composition comprising a pentasil type of zeolite, one or more solid acidic promoters and optionally a filler and/or binder, methods for making the catalyst composition and a process for using the catalyst in the manufacture of olefins.
    Type: Application
    Filed: August 28, 2003
    Publication date: June 10, 2004
    Inventors: Dennis Stamires, Paul O'Connor, Arja Hakuli-Pieterse, Rajeev S. Rao, Erik Jeroen Laheij
  • Process for the preparation of doped pentasil-type zeolites using doped faujasite seeds
    Publication number: 20040091420
    Abstract: Process for the preparation of doped pentasil-type zeolite, which process comprises the steps of:
    Type: Application
    Filed: August 25, 2003
    Publication date: May 13, 2004
    Inventor: Rajeev S. Rao