Patents by Inventor Chitoor Subramaniam

Chitoor Subramaniam 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).

  • Substituted propenoates and processes for the preparation thereof
    Patent number: 6452042
    Abstract: Substituted propenoates are prepared by eliminating an alcohol from a substituted malondialdehyde acetal, optionally in the presence of a homogeneous or heterogeneous catalyst.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: September 17, 2002
    Assignee: Creanova, Inc.
    Inventors: Frank Bauer, Chitoor Subramaniam
  • Process for preparing acetals of malondialdehyde
    Patent number: 6395914
    Abstract: A process directed to the preparation of acetals of malondialdehyde by reacting alkylvinyl ethers or esters with ortho formates in the gas phase with a heterogeneous catalyst.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: May 28, 2002
    Assignee: Creanova, Inc.
    Inventors: Frank Bauer, Chitoor Subramaniam
  • Process for preparing substituted acetals of malondialdehyde
    Patent number: 6395920
    Abstract: A process directed to the preparation of 2-substituted and 2,2-disubstituted acetals of malondialdehyde from ortho formates and substituted vinyl ethers in the presence of an acidic catalyst.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: May 28, 2002
    Assignee: Creanova, Inc.
    Inventors: Frank Bauer, Chitoor Subramaniam
  • PROCESS FOR PREPARING SUBSTITUTED ACETALS OF MALONDIALDEHYDE
    Publication number: 20020040166
    Abstract: A process directed to the preparation of 2-substituted and 2,2-disubstituted acetals of malondialdehyde from ortho formates and substituted vinyl ethers in the presence of an acidic catalyst.
    Type: Application
    Filed: January 28, 2000
    Publication date: April 4, 2002
    Inventors: Frank Bauer, Chitoor Subramaniam
  • Process for the preparation of malondialdehyde-derivatives
    Patent number: 6355844
    Abstract: Process for the preparation of malondialdehyde-derivatives by reacting vinylesters with orthoesters in the presence of a precious metal catalyst.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: March 12, 2002
    Assignee: Creanova, Inc.
    Inventors: Frank Bauer, Chitoor Subramaniam
  • Process for preparing heterocycles
    Patent number: 6153752
    Abstract: Process for the preparation of heterocycles by reacting 2-substituted acetals of malondialdehyde with a reactant selected from hydroxylamines and their salts, hydrazines and their salts, formamid, amidines and their salts, guanidines and their salts, aminoguanidines and their salts, nitroguanidine and their salts, O-alkyl-isoureas and their salts, O-cycloalkyl-isoureas and their salts, O-aralkyl-isoureas and their salts, O-aryl-isoureas and their salts, S-alkyl-isothioureas, S-cycloalkyl-isothioureas, S-aralkyl-isothioureas, S-arylisothioureas, S-alkyl-isothiouronium salts, S-cycloalkyl-isothiouronium salts, S-aralkyl-isothiouronium salts, S-aryl-isothiuronium salts, thiourea and urea.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: November 28, 2000
    Assignee: Creanova, Inc.
    Inventors: Frank Bauer, Chitoor Subramaniam