Patents by Inventor Sunil Sopana Tonde

Sunil Sopana Tonde 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 liquid phase oxidation of toluene to benzaldehyde
    Patent number: 7411099
    Abstract: The present invention provides a liquid phase oxidation of toluene by using catalyst containing manganese (Manganese II acetate) in presence of Lewis acid (Stannous (II) chloride) and a bromide promoter (NaBr), at a temperature of 120° C. and at a pressure of air in the range of 70-400 psig, in presence of carboxylic acid (acetic acid), as a solvent, to obtain high selectivity to benzaldehyde (76%). High activity was obtained with minimum byproducts such as benzoic acid, benzyl alcohol and benzyl acetate.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: August 12, 2008
    Assignee: Council of Scientific & Industrial Research
    Inventors: Raghunath Vitthal Chaudhari, Kalpendra Baburao Rajurkar, Sunil Sopana Tonde, Vilas Hari Rane
  • PROCESS FOR THE LIQUID PHASE OXIDATION OF TOLUENE TO BENZALDEHYDE
    Publication number: 20070213566
    Abstract: The present invention provides a liquid phase oxidation of toluene by using catalyst containing manganese (Manganese II acetate) in presence of Lewis acid (Stannous (II) chloride) and a bromide promoter (NaBr), at a temperature of 120° C. and at a pressure of air in the range of 70-400 psig, in presence of carboxylic acid (acetic acid), as a solvent, to obtain high selectivity to benzaldehyde (76%). High activity was obtained with minimum byproducts such as benzoic acid, benzyl alcohol and benzyl acetate.
    Type: Application
    Filed: September 20, 2006
    Publication date: September 13, 2007
    Inventors: Raghunath Vitthal Chaudhari, Kalpendra Baburao Rajurkar, Sunil Sopana Tonde, Vilas Hari Rane
  • Process for the preparation of acetic acid or methyl acetate
    Patent number: 6521784
    Abstract: Methanol is reacted in presence of catalyst system comprising of an iron containing compound and a tin containing compound with or without an organic compound containing C, N, O, P, S, diamine, diketone, and or diphosphines as a ligand to produce acetic acid or methyl acetate. The reaction is effected in a solvent containing nitro or nitrite group.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: February 18, 2003
    Assignee: Council of Scientific and Industrial Research
    Inventors: Ashutosh Anant Kelkar, Sunil Sopana Tonde, Sunil Sadashiv Divekar, Raghunath Vitthal Chaudhari
  • Process for the preparation of acetic acid or methyl acetate
    Publication number: 20020103397
    Abstract: Methanol is reacted in presence of catalyst system comprising of an iron containing compound and a tin containing compound with or without an organic compound containing C, N, O, P, S, diamine, diketone, and or diphosphines as a ligand to produce acetic acid or methyl acetate. The reaction is effected in a solvent containing nitro or nitrile group.
    Type: Application
    Filed: January 30, 2001
    Publication date: August 1, 2002
    Applicant: Council of Scientific and Industrial Research
    Inventors: Ashutosh Anant Kelkar, Sunil Sopana Tonde, Sunil Sadashiv Divekar, Raghunath Vitthal Chaudhari