Patents by Inventor Ashok Kumar Tiwari

Ashok Kumar Tiwari 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).

  • Patent number: 9611210
    Abstract: The present invention relates to a single-pot method for preparing dialkyl carbonates, the method comprises reaction of alkylene oxide with aliphatic or cyclic aliphatic alcohol, using wood ash catalyst, under CO2 pressure and heating the reaction mixture thereof to obtain dialkyl carbonates.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: April 4, 2017
    Assignee: INDIAN OIL CORPORATION LIMITED
    Inventors: Krishnarao Lopinti, Meeta Sharma, Ashok Kumar Tiwari, Ajay Kumar Arora, Suresh Kumar Puri, Anurag Ateet Gupta
  • Publication number: 20160347702
    Abstract: The present invention relates to a single-pot method for preparing dialkyl carbonates, the method comprises reaction of alkylene oxide with aliphatic or cyclic aliphatic alcohol, using wood ash catalyst, under CO2 pressure and heating the reaction mixture thereof to obtain dialkyl carbonates.
    Type: Application
    Filed: January 12, 2015
    Publication date: December 1, 2016
    Inventors: Krishnarao LOPINTI, Meeta SHARMA, Ashok Kumar TIWARI, Ajay Kumar ARORA, Suresh Kumar PURI, Anurag Ateet GUPTA
  • Patent number: 9272933
    Abstract: The present invention provides a bio-augmentation composition for improving the hydrocarbon degradation efficiency of effluent treatment plant for hydrocarbon degradation in wastewater generated from hydrocarbon processing industry and a method thereof. The composition comprises a synergistic combination of selective microorganisms to develop a consortium enabling effective degradation of hydrocarbons present in wastewater and converting thereof into harmless and environment friendly substances. The invention also provides for the said microorganisms and their isolations.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: March 1, 2016
    Assignee: INDIAN OIL CORPORATION LTD.
    Inventors: Manoj Kumar, Mahendra Pratap Singh, Ashok Kumar Tiwari, Deepak Kumar Tuli, Ravinder Kumar Malhotra, Anand Kumar
  • Publication number: 20140144838
    Abstract: The present invention provides a bio-augmentation composition for improving the hydrocarbon degradation efficiency of effluent treatment plant for hydrocarbon degradation in wastewater generated from hydrocarbon processing industry and a method thereof. The composition comprises a synergistic combination of selective microorganisms to develop a consortium enabling effective degradation of hydrocarbons present in wastewater and converting thereof into harmless and environment friendly substances. The invention also provides for the said microorganisms and their isolations.
    Type: Application
    Filed: April 2, 2012
    Publication date: May 29, 2014
    Applicant: INDIAN OIL CORPORATION LTD.
    Inventors: Manoj Kumar, Mahendra Pratap Singh, Ashok Kumar Tiwari, Deepak Kumar Tuli, Ravinder Kumar Malhotra, Anand Kumar
  • Publication number: 20090277728
    Abstract: A Self Activated Power Brake comprising a rotating brake disk fitted coaxially to a wheel and the main brake caliper/shoes fitted on dead axle/body frame. A sliding mechanism having shaped resembles to arc in orbit of brake disk. The mechanism having in two major parts, one is sliding and other is fixed which consists sliding bed and fitted with main power brake caliper. A pilot brake caliper, which is in sliding mode (floating mode), fitted on sliding part of the said sliding mechanism. At least one power transmitting means out of suggested means is needed to be linked the sliding pilot brake caliper to main power brake caliper to transfer the friction power of the pilot brake caliper after required amplification of the same. On braking action, the pilot brake caliper which is actuated by fluid line coming from master cylinder, actuates main power brake caliper through at least one power transmitting means as aforesaid to do the job as a SELF-ACTIVATED POWER BRAKE.
    Type: Application
    Filed: September 3, 2007
    Publication date: November 12, 2009
    Inventors: Ashok Kumar Tiwari, Padam Kumar Tiwari
  • Patent number: 7462275
    Abstract: The present invention relates to a process for the conversion of hydrocarbon streams with 95% true boiling point less than 400° C. to very high yield of liquefied petroleum gas in the range of 45-65 wt % of feed and high octane gasoline, the said process comprises catalytic cracking of the hydrocarbons using a solid fluidizable catalyst comprising a medium pore crystalline alumino-silicates with or without Y-zeolite, non crystalline acidic materials or combinations thereof in a fluidized dense bed reactor operating at a temperature range of 400 to 550° C., pressure range of 2 to 20 kg/cm2 (g) and weight hourly space velocity in range of 0.1 to 20 hour?1, wherein the said dense bed reactor is in flow communication to a catalyst stripper and a regenerator for continuous regeneration of the coked catalyst in presence of air and or oxygen containing gases, the catalyst being continuously circulated between the reactor-regenerator system.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: December 9, 2008
    Assignee: Indian Oil Corporation Limited
    Inventors: Asit Kumar Das, Debasis Bhattacharyya, Gadari Saidulu, Satayen Kumar Das, Bandaru Venkata Hari P. Gupta, Ramakrishnan Ramanarayanan, Latoor Lal Saroya, Konduri Lakshminarayana, Marri Rama Rao, Vinod Ramchandra Upadhyay, Sukumar Mandal, Deepa Meghavathu, Arumugam Velayutham Karthikeyani, Wadharwa Ram Kalsi, Arvind Pratap Singh, Veena Bansal, Ashok Kumar Tiwari, Venkatachalam Krishnan, Satish Makhija, Sobhan Ghosh, Niranjan Raghunath Raje
  • Publication number: 20080194704
    Abstract: The invention relates to an agricultural spray oil composition comprising paraffinic base oil and emulsifiers for controlling pests and diseases in tea gardens, various plantations, fruit orchards etc. The said composition is based on C16-C18 alcohol poly glycol ether along with other emulsifiers.
    Type: Application
    Filed: November 29, 2005
    Publication date: August 14, 2008
    Inventors: Pankaj Bhatnagar, Naveen Kumar Pokhriyal, Natarajan Sivasurian, Ashok Kumar Tiwari, Vijay Prabhakar Deshmukh, Jayaprakash Chellappan Kandisseril, Babu Ram Tyagi, Ravinder Kumar Malhotra, Ram Prakash Verma, Niranjan Reghunath Raje
  • Patent number: 7081260
    Abstract: The present invention relates to a method for providing ?-glucosidase inhibition to a subject by administering a pharmaceutical composition comprising a ?-glucosidase inhibitory agent selected from pipataline (formula 1a), sesamin (formula 1b), pellitorine (Formula 1c), guineensine (Formula 1d) and brachystamide-B (formula 1e) having therapeutic application for diabetes mellitus, cancer, viral diseases such as hepatitis B and C, HIV, AIDS etc; also the invention provides a process for the isolation of said ?-glucosidase inhibitory agent from the plant source Piper longum in significant yields.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: July 25, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Janaswamy Madhusudana Rao, Pullela Venkata Srinivas, Vummenthala Anuradha, Ashok Kumar Tiwari, Amtul Zehra Ali, Jhillu Singh Yadav, Kondapuram Vijaya Raghavan
  • Patent number: 7071341
    Abstract: The present invention provides novel ?-glucosidase inhibitory compound (?)-mesquitol and its analogs isolated in significant yield from traditional medicinal plant Dichrostachys cinerea and further modification of (?)-mesquitol to enhance the ?-glucosidase inhibitory potential; the invention also identifies the usage of (?)-mesquitol and its analogues, based on their ?-glucosidase inhibitory activity, as broad based potential therapeutics as antihyperglycernic, antidiabatic, antiobesity, antiviral, anticancer, immunestimulants and the like.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: July 4, 2006
    Assignee: Council of Scientific and Industrial Research
    Inventors: Janaswamy Madhusudana Rao, Rao Jagadeeshwar Rao, Upparapalli Sampath Kumar, Singireddy Venkat Reddy, Ashok Kumar Tiwari, Jhillusingh Yadav, Kondapuram Vijaya Raghavan
  • Publication number: 20040171674
    Abstract: The present invention provides novel &agr;-glucosidase inhibitory compound (−)-mesquitol and its analogs isolated in significant yield from traditional medicinal plant Dichrostachys cinerea and further modification of (−)-mesquitol to enhance the &agr;- glucosidase inhibitory potential; the invention also identifies the usage of (−)-mesquitol and its analogues, based on their &agr;-glucosidase inhibitory activity, as broad based potential therapeutics as antihyperglycernic, antidiabatic, antiobesity, antiviral, anticancer, immunestimulants and the like.
    Type: Application
    Filed: April 1, 2003
    Publication date: September 2, 2004
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEA
    Inventors: Janaswamy Madhusudana Rao, Rao Jagadeeshwar Rao, Upparapalli Sampath Kumar, Singireddy Venkat Reddy, Ashok Kumar Tiwari, Jhillusingh Yadav, Kondapuram Vijaya Raghavan
  • Patent number: 6781002
    Abstract: The invention relates to a process for the isolation of (−)-mesquitol in substantial (1.5%) yields from Dichrostachys cinerea and also the usage of (−)-mesquitol as an antioxidant/free-radical scavenger.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: August 24, 2004
    Assignee: Council of Scientific & Industrial Research
    Inventors: Janaswamy Madhusudana Rao, Rao Jagadeeshwar Rao, Ashok Kumar Tiwari, Jhillu Singh Yadav, Kondapuram Vijaya Raghavan
  • Publication number: 20040116716
    Abstract: The invention relates to a process for the isolation of (−)-mesquitol in substantial (1.5%) yields from Dichrostachys cinerea and also the usage of (−)-mesquitol as an antioxidant/free-radical scavenger.
    Type: Application
    Filed: February 28, 2003
    Publication date: June 17, 2004
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Janaswamy Madhusudana Rao, Rao Jagadeeshwar Rao, Ashok Kumar Tiwari, Jhillu Singh Yadav, Kondapuram Vijaya Raghavan
  • Publication number: 20040081711
    Abstract: The present invention relates to a method for providing &agr;-glucosidase inhibition to a subject by administering a pharmaceutical composition comprising a &agr;-glucosidase inhibitory agent selected from pipataline (formula 1a), sesamin (formula 1b), pellitorine (Formula 1c), guineensine (Formula 1d) and brachystamide-B (formula 1e) having therapeutic application for diabetes mellitus, cancer, viral diseases such as hepatitis B and C, HIV, AIDS etc; also the invention provides a process for the isolation of said &agr;-glucosidase inhibitory agent from the plant source Piper longum in significant yields.
    Type: Application
    Filed: October 29, 2002
    Publication date: April 29, 2004
    Inventors: Janaswamy Madhusudana Rao, Pullela Venkata Srinivas, Vummenthala Anuradha, Ashok Kumar Tiwari, Amtul Zehra Ali, Jhillu Singh Yadav, Kondapuram Vijaya Raghavan
  • Patent number: 6592911
    Abstract: This invention relates to a pharmaceutical composition comprising an effective amount of (−)-Olivil together with or associated with an additive useful as an antioxidant; a process for isolating the (−)-Olivil from the pant Stereospermum personatum and also relates to use of the active fraction (−)-Olivil as an antioxidant or free radical scavenger.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: July 15, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Janaswamy Madhusudana Rao, Ashok Kumar Tiwari, Upparapalli Sampath Kumar, Jhillu Singh Yadav, Kondapuram Vijaya Raghavan
  • Patent number: 6562381
    Abstract: The present invention relates to a novel pharmaceutical composition containing (+)-Cycloolivil and an additives, which is used as an antioxidant and is obtained from a new source namely Stereospermum personatum; the invention also provides a process for isolation the active compound (+)-Cycloolivil from a plant source namely Stereospermum personatum and use of the compound (+)-Cycloolivil as an antioxidant.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: May 13, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Janaswamy Madhusudana Rao, Ashok Kumar Tiwari, Upparapalli Sampath Kumar, Jhillu Singh Yadav, Kondapuram Vijaya Raghavan
  • Patent number: 6537593
    Abstract: This invention relates to the isolation of compound namely (−)-wikstromol and together with or associated with a therapeutically acceptable additive and useful as hepatoprotective agent.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: March 25, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Janaswamy Madhusudana Rao, Ashok Kumar Tiwari, Pullela Venkata Srinivas, Jhillu Singh Yadav, Kondapuram Vijaya Raghavan
  • Publication number: 20030032633
    Abstract: This invention relates to a pharmaceutical composition comprising an effective amount of (-)-Olivil together with or associated with an additive useful as an antioxidant; a process for isolating the (-)-Olivil from the pant Stereospermum Personatum and also relates to use of the active fraction (-)-Olivil as an antioxidant or free radical scavenger.
    Type: Application
    Filed: July 27, 2001
    Publication date: February 13, 2003
    Inventors: Janaswamy Madhusudana Rao, Ashok Kumar Tiwari, Upparapalli Sampath Kumar, Jhillu Singh Yadav, Kondapuram Vijaya Raghavan
  • Publication number: 20030026862
    Abstract: The present invention relates to a novel pharmaceutical composition containing (+)-Cycloolivil and an additives, which is used as an antioxidant and is obtained from a new source namely Stereospermum personatum; the invention also provides a process for isolation the active compound (+)-Cycloolivil from a plant source namely Stereospermum personatum and use of the compound (+)-Cycloolivil as an antioxidant.
    Type: Application
    Filed: July 27, 2001
    Publication date: February 6, 2003
    Inventors: Janaswamy Madhusudana Rao, Ashok Kumar Tiwari, Upparapalli Sampath Kumar, Jhillu Singh Yadav, Kondapuram Vijaya Raghavan
  • 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: 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