Patents by Inventor Changaramponnath Gopinathan

Changaramponnath Gopinathan 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).

  • Method for preparing hydroperoxides by oxygenation
    Patent number: 6077977
    Abstract: Aryldialkylmethanes such as cumene are converted to the corresponding hydroperoxides by reaction with oxygen in the presence of a promoter which may be an alkali metal borate such as borax, an alkali metal salt of a polymer such as an acrylic polymer, or an alkaline reagent in combination with a specific proportion of added water or water of hydration, also exemplified by borax. High yields of the hydroperoxide are obtained, particularly when the promoter includes water.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: June 20, 2000
    Assignee: General Electric Company
    Inventors: Sarada Gopinathan, John William Fulmer, Changaramponnath Gopinathan, John Christopher Schmidhauser
  • Process for the preparation of N-acetyl aminophenols
    Patent number: 5856575
    Abstract: This invention provides a process for the manufacture of N-acetyl amino phenol, which process comprises reacting an appropriate phenol and an amide in the presence of a heteropoly acid or its alkali metal salt catalyst.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: January 5, 1999
    Assignee: Council of Scientific Industrial Research
    Inventors: Sarada Gopinathan, Changaramponnath Gopinathan, Joseph Kuruvilla, Sanjeevani Amrit Pardhy, Paul Ratnasamy
  • Process for the single step oxidation of 3-phenoxytoluene to 3-phenoxybenzaldehyde
    Patent number: 5693869
    Abstract: This invention relates to an improved process for the single step oxidation of 3-phenoxytoluene to 3-phenoxybenzaldehyde using molecular oxygen as the oxidant by employing a Ti.sub.2 VMoP.sub.6 O.sub.24 catalyst having particular infrared spectral bands.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: December 2, 1997
    Assignee: Council of Scientific & Industrial Research
    Inventors: Joseph Kuruvilla, Changaramponnath Gopinathan, Sarada Gopinathan, Paul Ratnasamy