Patents by Inventor Pillarisetti Venkata Subba Rao

Pillarisetti Venkata Subba 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 preparing cyclodextrin inclusion complex
    Patent number: 6635757
    Abstract: The present invention relates to a process for the preparation of a water soluble inclusion complex of neem seed kernel extract (NSKE) containing azadirachtin-A in cyclodextrin and its use in an insecticidal formulation. The process of the present invention comprises the following steps adding neem seed kernel extract containing azadirachtin-A to cyclodextrin, the molar ratio of azadirachtin-A to the cyclodextrin ranging from 1:0.5 to 1:20, stirring the above mixture, filtering the above mixture to obtain a water soluble inclusion complex of neem seed kernel extract, if desired, freeze/spray drying the said water soluble complex of neem seed kernel extract to get a free flowing pale cream powder.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: October 21, 2003
    Assignee: Vittal Mallya Scientific Research Foundation
    Inventors: Sandeep Prabhu Kumble, Ramaswamy SambasivamAnnadurai, Malladi Srinivas, Alapati Srinivasa Rao, Candadai Seshardi Ramadoss, Pillarisetti Venkata Subba Rao
  • Soluble double metal salt of group IA and IIA of hydroxycitric acid, process of preparing the same and its use in beverages and other food products without effecting their flavor and properties
    Patent number: 6395296
    Abstract: The present invention is directed to a new soluble double metal salt of group IA and IIA of (−) hydroxycitric acid of general formula I: where X is IA group metal: Li or Na or K or Rb or Cs or Fr where Y is IIA group metal: Be or Mg or Ca or Sr or Ba or Ra where the concentration of X in the salt varies from 1.5-51.0%, the concentration of Y in the salts varies from 2.0-50.9%, the concentration of HCA in the salt varies from 31.0-93.0% depending on the nature of X and Y. This invention more particularly relates to new soluble double metal salt of group IA and IIA of (−) hydroxycitric acid of general formula II.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: May 28, 2002
    Inventors: Karanam Balasubramanyam, Bhaskaran Chandrasekhar, Candadai Seshadri Ramadoss, Pillarisetti Venkata Subba Rao
  • Soluble double metal salt of group IA and IIA of (-) hydroxycitric acid, process of preparing the same and its use in beverages and other food products without effecting their flavor and properties
    Patent number: 6160172
    Abstract: The present invention is directed to a new soluble double metal salt of group IA and IIA of (-) hydroxycitric acid of general formula I:where X is IA group metal: Li or Na or K or Rb or Cs or Frwhere Y is IIA group metal: Be or Mg or Ca or Sr or Ba or Rawhere the concentration of X in the salt varies from 1.5-51.0%,the concentration of Y in the salts varies from 2.0-50.9%,the concentration of HCA in the salt varies from 31.0-93.0% depending on the nature of X and Y.This invention more particularly relates to new soluble double metal salt of group IA and IIA of (-) hydroxycitric acid of general formula II.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: December 12, 2000
    Assignee: Vittal Mallya Scientific Research Foundation
    Inventors: Karanam Balasubramanyam, Bhaskaran Chandrasekhar, Candadai Seshadri Ramadoss, Pillarisetti Venkata Subba Rao
  • Check mite composition and a process for preparing the same
    Patent number: 6060075
    Abstract: This invention relates to a composition for controlling house dust mites. The composition comprises neem seed kernel extract containing azadirachtin, an alcoholic extract of plant resins, plant polyphenols or phenolic compound, fungistat used in food industry and a dispersion medium. The invention further includes a process of preparing the same by dispersing the above ingredients in a dispersion medium.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: May 9, 2000
    Assignee: Vittal Mallya Scientific Research Foundation
    Inventors: Pillarisetti Venkata Subba Rao, Ramaswamy Sambasivam Annadurai, Malladi Srinivas