Patents by Inventor Patcha Ramachandra Rao

Patcha Ramachandra 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 recovery of gallium
    Patent number: 7338589
    Abstract: The present invention relates to a process for the recovery of gallium from Bayer process liquors. Bayer process liquor is obtained from alumina industries and contains 450 g/L Na2O, 80 g/L Al2O3 and 190±20 ppm of gallium. The present invention utilizes an organic and inorganic phase for a two stage separation process to recover gallium with high purity.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: March 4, 2008
    Assignee: Council of Scientific and Industrial Research
    Inventors: Patcha Ramachandra Rao, Puvvada George Vijay Kumar, Archana Agrawal, Indranil Chattoraj
  • Process for the production of zirconium boride powder
    Patent number: 6908599
    Abstract: The present invention provides an improved process for the manufacture of zirconium boride by reacting boric acid, a Zirconium compound and magnesium and leaching the resulting product mixture to obtain zirconium boride with high purity.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: June 21, 2005
    Assignee: Council of Scientific and Industrial Research
    Inventors: Suman Kumari Mishra, Samar Das, Rajendra Prakash Goel, Patcha Ramachandra Rao
  • Process for the production of neodymium-iron-boron permanent magnet alloy powder
    Patent number: 6855186
    Abstract: The present invention relates to an improved process for the production of neodymium-iron-boron permanent magnet alloy powder. The neodymium-iron-boron alloy prepared by the process of the present invention can be processed further to get anisotropic permanent magnets, bonded as well as sintered.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: February 15, 2005
    Assignee: Council of Scientific and Industrial Research
    Inventors: Patcha Ramachandra Rao, Venkatesh Rao, Arvind Singh
  • Process for recovery of gallium
    Publication number: 20040042945
    Abstract: The present invention relates to a process for the recovery of gallium from Bayer process liquors. Bayer process liquor is obtained from alumina industries and contains 450 g/L Na2O, 80 g/L Al2O3 and 190±20 ppm of gallium. The present invention utilizes an organic and inorganic phase for a two stage separation process to recover gallium with high purity.
    Type: Application
    Filed: March 20, 2003
    Publication date: March 4, 2004
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Patcha Ramachandra Rao, Puvvada George Vijay Kumar, Archana Agrawal, Indranil Chattoraj
  • Process for the production of zirconium boride powder
    Publication number: 20040022712
    Abstract: The present invention provides an improved process for the manufacture of zirconium boride by reacting boric acid, a Zirconium compound and magnesium and leaching the resulting product mixture to obtain zirconium boride with high purity.
    Type: Application
    Filed: March 20, 2003
    Publication date: February 5, 2004
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Suman Kumari Mishra, Samar Das, Rajendra Prakash Goel, Patcha Ramachandra Rao
  • Process for the production of neodymium-iron-boron permanent magnet alloy powder
    Publication number: 20030217620
    Abstract: The present invention relates to an improved process for the production of neodymium-iron-boron permanent magnet alloy powder. The neodymium-iron-boron alloy prepared by the process of the present invention can be processed further to get anisotropic permanent magnets, bonded as well as sintered.
    Type: Application
    Filed: March 20, 2003
    Publication date: November 27, 2003
    Applicant: COUNCIL SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Patcha Ramachandra Rao, Venkatesh Rao, Arvind Sinha