Patents by Inventor Kalluri Venkata Sri Ranganath

Kalluri Venkata Sri Ranganath 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 2-nitrothiophene selectively from thiophene using metal exchanged clay catalysts
    Patent number: 6794521
    Abstract: The present invention provides an ecofriendly process for the preparation 2-nitrothiophenes selectively from thiophene, using metal exchanged clay catalysts and nitric acid, dispensing with the use of acetic anhydride.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: September 21, 2004
    Assignee: Council of Scientific and Industrial Research
    Inventors: Boyapati Manoranjan Choudary, Mannepalli Lakshmi Kantam, Kompella Vishweshwar Ramprasad, Kalluri Venkata Sri Ranganath
  • Process for the preparation of 2-nitrothiophene selectively from thiophene using metal exchanged clay catalysts
    Publication number: 20030181734
    Abstract: The present invention provides an ecofriendly process for the preparation 2-nitrothiophenes selectively from thiophene, using metal exchanged clay catalysts and nitric acid, dispensing with the use of acetic anhydride.
    Type: Application
    Filed: March 20, 2002
    Publication date: September 25, 2003
    Inventors: Boyapati Manoranjan Choudary, Mannepalli Lakshmi Kantam, Kompella Vishweshwar Ramprasad, Kalluri Venkata Sri Ranganath
  • Process for acylation of naphthyl ethers
    Patent number: 6320082
    Abstract: An improved process for the preparation of acyl naphthyl ethers useful as important intermediates for drugs, pharmaceuticals and polyesters by reacting a naphthyl ether with a C2-C5 acid anhydride as an acylating agent employing a zeolite beta catalyst is disclosed.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: November 20, 2001
    Assignee: Council of Scientific and Industrial Research
    Inventors: Mannepalli Lakshmi Kantam, Mutyala Sateesh, Boyapati Manoranjan Choudary, Kalluri Venkata Sri Ranganath, Kondapuram Vijaya Raghavan