Patents by Inventor Vijaya Raghavan

Vijaya Raghavan 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).

  • Publication number: 20030022931
    Abstract: This invention relates to novel alkylxanthates of formulae 1 to 3 and use of alkylxanthates of formulae 1 to 6 in the integrated pest management, more specifically alkyl xanthates are used as insect growth regulatory for pest management in agricultural fields no or less environmental impact.
    Type: Application
    Filed: March 30, 2001
    Publication date: January 30, 2003
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Janapala Venkateswara Rao, Yenamandra Venkateswarlu, Kondapuram Vijaya Raghavan
  • Publication number: 20020192235
    Abstract: The invention relates to a novel complex for oral delivery of drugs, therapeutic protein/peptides and vaccines which are loaded in a Vitamin B2 (VB12) coupled particulate carrier system with spacers in between, the carrier system with spacers having a formula VB12-R′/R″-N wherein, R′ or R″ is spacer and/or agents for derivatization of VB12 to provide either NH2 or COOH or SH groups, and N is the micro or nano particle carriers for the delivery of injectable drugs, therapeutic protein/peptides and vaccines.
    Type: Application
    Filed: March 1, 2001
    Publication date: December 19, 2002
    Inventors: Kishore Babu Chalasani, Vamanrao Diwan, Kondapuram Vijaya Raghavan, Gregory John Russell-Jones, Sanjay Kumar Jain, Kollipara Koteshawar Rao
  • Patent number: 6495695
    Abstract: The present invention provides a process for synthesis of tri- and tetra-alkylated pyridines (i.e. collidines) in high yields by reacting methyl ethyl ketone with formaldehyde in presence of ammonia in gas phase in the presence of a zeolite catalyst which comprises of silica-alumina with at least one metal ion and/or metal selected from the group consisting of lanthanum, lead, manganese, iron, copper and cobalt. This process provides eco-friendly, more economical and shape-selective heterogeneous method.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: December 17, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Shivanand Janardan Kulkarni, Kondapuram Vijaya Raghavan, Srinivas Nagabandi, Radha Rani Vippagunta
  • Patent number: 6495690
    Abstract: This invention relates to process for producing annulated pyridine bases by reacting cyclic ketones with aliphatic aldehyde in presence of ammonia in gaseous phase in the presence of a catalyst. This process provides an eco-friendly, more economical and highly selective heterogeneous method.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: December 17, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Shivanand Janardan Kulkarni, Kondapuram Vijaya Raghavan, Radha Rani Vippagunta, Srinivas Nagabandi
  • Patent number: 6492524
    Abstract: The present invention provides an improved process for the synthesis of aryl pyridine bases by reacting an aromatic aldehyde or ketone and allylic alcohol or aldehyde in presence of ammonia in gas phase, in high yield and selectivity with catalyst obtained by optionally modifying a zeolite having an atomic ratio of Si to Al, 2.5 to 12.5 and /or with at least one metal ion and/or metal compound selected from the group consisting of lead and lanthanum. This process provides an eco-friendly, more economical and highly selective heterogeneous method.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: December 10, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Shivanand Janardan Kulkarni, Kondapuram Vijaya Raghavan, Srinivas Nagabandi, Radha Rani Vippagunta
  • Publication number: 20020183517
    Abstract: Disclosed is a process for selectively producing aliphatic cyclic amines which comprises reacting a dihydric alcohol characterized by four to six carbons, preferably 1,5-pentane diol, with excess ammonia in presence of ZSM-5 catalyst modified with group of elements nickel, copper or cobalt-containing, at a temperature of at least 250° C., wherein said catalyst incorporates at least one metal.
    Type: Application
    Filed: March 27, 2001
    Publication date: December 5, 2002
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Shivanand Janardan Kulkarni, Kondapuram Vijaya Raghavan, Radha Rani Vippagunta, Srinivas Nagabandi
  • Patent number: 6489514
    Abstract: This invention relates to a pharmaceutical composition comprising an effective amount of (−)-Secoisolariciresinol together with or associated with an additive useful as an antioxidant; a process for isolating the (−)-Secoisolariciresinol from the plant Stereospermum Personatum and also relates to use of the active fraction (−)-Secoisolariciresinol as an antioxidant or free radical scavenger.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: December 3, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Janaswamy Madhusudana Rao, Ashok Kumar Tiwari, Upparapalli Sampath Kumar, Jhillu Singh Yadav, Kondapuram Vijaya Raghavan
  • Publication number: 20020177705
    Abstract: The present invention relates to novel calix pyrroles and a process for synthesis of calix (4) pyrroles by reacting pyrrole with cyclic or acyclic ketones in dichloro methane (DCM) solvent over molecular sieve catalysts which provides an eco-friendly, more economical and selective heterogeneous method.
    Type: Application
    Filed: February 28, 2001
    Publication date: November 28, 2002
    Inventors: Kondapuram Vijaya Raghavan, Shivanand Janardan Kulkarni, Motkuri Radha Kishan, Nagabandi Srinivas
  • Publication number: 20020173651
    Abstract: This invention relates to process for producing annulated pyridine bases by reacting cyclic ketones with aliphatic aldehyde in presence of ammonia in gaseous phase in the presence of a catalyst. This process provides an eco-friendly, more economical and highly selective heterogeneous method.
    Type: Application
    Filed: March 27, 2001
    Publication date: November 21, 2002
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Shivanand Janardan Kulkarni, Kondapuram Vijaya Raghavan, Radha Rani Vippagunta, Srinivas Nagabandi
  • Publication number: 20020173660
    Abstract: The present invention provides a process for synthesis of tri- and tetra-alkylated pyridines (i.e. collidines) in high yields by reacting methyl ethyl ketone with formaldehyde in presence of ammonia in gas phase in the presence of a zeolite catalyst which comprises of silica-alumina with atleast one metal ion and/or metal selected from the group consisting of lanthanum, lead, manganese, iron, copper and cobalt. This process provides eco-friendly, more economical and shape-selective heterogeneous method.
    Type: Application
    Filed: March 27, 2001
    Publication date: November 21, 2002
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Shivanand Janardan Kulkarni, Kondapuram Vijaya Raghavan, Srinivas Nagabandi, Radha Rani Vippagunta
  • Patent number: 6482413
    Abstract: The invention relates to a novel complex for oral delivery of drugs, therapeutic protein/peptides and vaccines which are loaded in a Vitamin B12 (VB12) coupled particulate carrier system with spacers in between, the carrier system with spacers having a formula VB12—R′/R″—N wherein, R′ or R″ is spacer and/or agents for derivatization of VB12 to provide either NH2 or COOH or SH groups, and N is the micro or nano particle carriers for the delivery of injectable drugs, therapeutic protein/peptides and vaccines.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: November 19, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Kishore Babu Chalasani, Vamanrao Diwan, Kondapuram Vijaya Raghavan, Gregory John Russell-Jones, Sanjain Kumar Jain, Kollipara Koteshawar Rao
  • Publication number: 20020167544
    Abstract: A method, system and computer program product to define and utilize functions graphically is provided which may be used in the simulation of finite state machines. The functions may combine mathematical, logical, non-linear and comparative operations. The graphical elements of the function may be hidden for ease of display of various portions of a model.
    Type: Application
    Filed: May 14, 2001
    Publication date: November 14, 2002
    Inventors: Vijaya Raghavan, Jay Ryan Torgerson
  • Patent number: 6472555
    Abstract: The present invention relates to a process for the preparation of esters from alcohols using acetic acid as acetylating agent and clays as catalysts, which comprises the preparation of esters in a single step from the reaction of aliphatic, acyclic, cyclic, heterocyclic, &agr;,&bgr;-unsaturated and aromatic alcohols with carbon atoms in the range of C1 to C10 with acetic acid in a molar ratio of 1:3 to 11 using reusable natural montmorillonite/metal ion-exchanged clay catalysts in the solvent medium of aliphatic, aromatic, or chlorinated hydrocarbons at 30-140° C. for a period in the range of 0.02 to 3.0 hrs, and recovering the corresponding esters by simple work-up procedure.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: October 29, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Boyapati Manoranjan Choudary, Veldurthy Bhaskar, Mannepalli Lakshmi Kantam, Kottapalli Koteswara Rao, Kondapuram Vijaya Raghavan
  • Publication number: 20020143180
    Abstract: The present invention relates to enhancement of the cycle life of a zinc chromium based catalyst used in the synthesis of 2-methylpyrazine by increasing the reaction temperature step-wise, starting from a low temperature, while monitoring the levels of total conversion and selectivity towards pyrazine. The catalyst can be regenerated after each cycle of use without substantial loss of activity.
    Type: Application
    Filed: March 27, 2001
    Publication date: October 3, 2002
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Sai Prasad Potharaju Seetharamanjaneya, Kondapuram Vijaya Raghavan, Panja Kanta Rao, Shivanand Janardan Kulkarni, Katabathini Narasimha Rao, Rajesh Gopinath, Suresh Farsinavis, Harshadas Mitaram Meshram
  • Publication number: 20020143175
    Abstract: The present invention provides an improved process for synthesis of porphyrin compounds of the general formula 1 1
    Type: Application
    Filed: March 27, 2001
    Publication date: October 3, 2002
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Shivanand Janardan Kulkarni, Kondapuram Vijaya Raghavan, Radha Kishan Motkuri, Srinivas Nagabandi
  • Publication number: 20020094351
    Abstract: This invention relates to the isolation of compound namely (−)-wikstromol and together with or associated with a therapeutically acceptable additive and usefull as hepatoprotective agent.
    Type: Application
    Filed: January 29, 2002
    Publication date: July 18, 2002
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Janaswamy Madhusudana Rao, Ashok Kumar Tiwari, Pullela Venkata Srinivas, Jhillu Singh Yadav, Kondapuram Vijaya Raghavan
  • Patent number: 6387349
    Abstract: The present invention relates to a process for the microwave induced preparation of crystalline, microporous titanium silicalite. More particularly; the present invention relates to a process for the preparation of crystalline microporous titanium silicalite of the formula: xTiO2:(1−x)SiO2 wherein x is greater than 0.043 and less than or equal to 0.11. These silicalites, prepared under microwave irradiation have the same physico-chemical properties as titanium silicalite prepared by hydrothermal methods.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: May 14, 2002
    Assignee: Council of Scientific And Industrial Research
    Inventors: Shivanand Janardan Kulkarni, Muppa Ramakrishna Prasad, Gunda Kamalakar, Kondapuram Vijaya Raghavan, Potharaju Seetharamanjaneya Sai Prasad, Katabathini Narsimha Rao
  • Patent number: 6387033
    Abstract: LDH-osmate of the formula [MII(1−x)MIIIx(OH)2][OsO42−]x/2.zH2O wherein MII is a divalent cation selected from the group consisting of Mg2+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+ and Ca2+ and MIII is a trivalent ion selected from the group consisting of Al3+, Cr3+, Mn3+, Fe3+ and Co3+, and x is the mole fraction having integral value ranging from 0.2 to 0.33, and z is the number of water molecules and ranges from 1 to 4, useful as, a catalyst, and a process for the preparation thereof and use thereof to manufacture vicinal diols.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: May 14, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Boyapati Manoranjan Choudary, Naidu Sreenivasa Chowdari, Mannepalli Lakshmi Kantam, Kondapuram Vijaya Raghavan, Chinta Venkat Reddy Reddy
  • Patent number: 6383495
    Abstract: The invention provides a novel herbal formulation useful for the treatment of skin disorders and comprising two or more plant extracts selected from Tagetes erecta, Moringa oleifera, Ocimum sanctum, Tridax procumbens, Aloe vera, and Gum olibanum together with conventional additives.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: May 7, 2002
    Assignee: Council of Scientific & Industrial Research
    Inventors: Sistla Ramakrishna, Bhamidipalli Subrahmanya Sitaramam, Prakash Vaman Rao Diwan, Kondapuram Vijaya Raghavan
  • Patent number: 6379673
    Abstract: The invention provides a herbal formulation useful as a therapeutic and cosmetic applications for the treatment of general skin disorders, said composition comprising at least two or more plant extracts in the form of oil or powder or mixtures thereof, the said plants extracts being selected from the group consisting of Gymnena sylvestrae water extract 3 to 6 wt. %; Tridax procumbens water extract 3 to 6 wt. %; its methanolic extract 4 to 6 wt. %, Allium sativum oilhexane extract 1 to 3 wt. %; dried juice of Aloe vera 2 to 6 wt. %; Gum olibanum powder in the natural form 4 to 7 wt. %; Gum olibanum resinoid or its organic extract 3 to 8 wt. %; and resinoid free Gum olibanum meal 5 to 10 wt. %., optionally, including any drug having anti-inflammatory and wound healing property or mixture thereof, the said drug being selected from the group consisting of Disclofenac sodium 1-3 wt. %, Salicyclic acid 1 to 4 wt. %, Piroxicam 1 to 2 wt. %, Turmeric powder 0.1 to 1 wt.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: April 30, 2002
    Assignee: Council of Scientific and Industrial Research
    Inventors: Prakash Vaman Rao Diwan, Bhamidipalli Subrahmanya Sitaramam, Sistla Ramakrishna, Kondapuram Vijaya Raghavan