Patents by Inventor Kirthivasan Nagarajan

Kirthivasan Nagarajan 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 producing a t-butyl phenol from a Craffinate stream
    Patent number: 8937201
    Abstract: This invention relates to processes for producing various t-butyl phenols, such as 2,6-di-tert-butyl phenol and ortho-tert-butyl phenol, by selectively reacting phenol or a substituted phenol with an isobutylene-containing C4 raffinate stream. The 2,6-di-tert-butyl phenol and ortho-tert-butyl phenol can be transalkylated to form other tert-butyl phenols, such as para-tert-butyl phenol, 2,4-di-tert-butyl phenol.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: January 20, 2015
    Assignee: SI Group, Inc.
    Inventors: Roger D'Souza, Scott Smith, Kirthivasan Nagarajan
  • PROCESS FOR PRODUCING A t-BUTYL PHENOL FROM A C4 RAFFINATE STREAM
    Publication number: 20130150629
    Abstract: This invention relates to processes for producing various t-butyl phenols, such as 2,6-di-ten-butyl phenol and ortho-tert-butyl phenol, by selectively reacting phenol or a substituted phenol with an isobutylene-containing C4 raffinate stream. The 2,6-di-ten-butyl phenol and ortho-tert-butyl phenol can be transalkylated to form other ten-butyl phenols, such as para-tert-butyl phenol, 2,4-di-ten-butyl phenol.
    Type: Application
    Filed: December 3, 2010
    Publication date: June 13, 2013
    Applicant: SI GROUP, INC.
    Inventors: Roger D'Souza, Scott Smith, Kirthivasan Nagarajan
  • Catalysts and processes for the conversion of succinates to citraconates or itaconates
    Patent number: 6664417
    Abstract: Processes for producing citraconic anhydride and citraconic acid using porous materials with specific surface acidities and surface areas are described. The preferred catalyst is a porous gamma alumina. Itaconic acid is produced from citraconic acid. Itaconic acid is an intermediate to a variety of compounds including polymers.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: December 16, 2003
    Assignee: Board of Trustees of Michigan State University
    Inventors: Dennis J. Miller, Dushyant Shekhawat, Kirthivasan Nagarajan, James E. Jackson
  • Catalysts and processes for the conversion of succinates to citraconates or itaconates
    Patent number: 6649774
    Abstract: Processes for producing citraconic anhydride and citraconic acid using porous materials with specific surface acidities and surface areas are described. The preferred catalyst is a porous gamma alumina. Itaconic acid is produced from citraconic acid. Itaconic acid is an intermediate to a variety of compounds including polymers.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: November 18, 2003
    Assignee: Board of Trustees of Michigan State University
    Inventors: Dennis J. Miller, Dushyant Shekhawat, Kirthivasan Nagarajan, James E. Jackson
  • Catalysts and processes for the conversion of succinates to citraconates or itaconates
    Publication number: 20030120111
    Abstract: Processes for producing citraconic anhydride and citraconic acid using porous materials with specific surface acidities and surface areas are described. The preferred catalyst is a porous gamma alumina. Itaconic acid is produced from citraconic acid. Itaconic acid is an intermediate to a variety of compounds including polymers.
    Type: Application
    Filed: August 23, 2002
    Publication date: June 26, 2003
    Applicant: Board of Trustees operating Michigan State University
    Inventors: Dennis J. Miller, Dushyant Shekhawat, Kirthivasan Nagarajan, James E. Jackson
  • Catalysts and processes for the conversion of succinates to citraconates or itaconates
    Publication number: 20030120110
    Abstract: Processes for producing citraconic anhydride and citraconic acid using porous materials with specific surface acidities and surface areas are described. The preferred catalyst is a porous gamma alumina. Itaconic acid is produced from citraconic acid. Itaconic acid is an intermediate to a variety of compounds including polymers.
    Type: Application
    Filed: August 23, 2002
    Publication date: June 26, 2003
    Applicant: Board of Trustees operating Michigan State University
    Inventors: Dennis J. Miller, Dushyant Shekhawat, Kirthivasan Nagarajan, James E. Jackson
  • Catalysts and processes for the conversion of succinates to citraconates or itaconates
    Patent number: 6504055
    Abstract: Processes for producing citraconic anhydride and citraconic acid using porous materials with specific surface acidities and surface areas are described. The preferred catalyst is a porous gamma alumina. Itaconic acid is produced from citraconic acid. Itaconic acid is an intermediate to a variety of compounds including polymers.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: January 7, 2003
    Assignee: Board of Trustees of Michigan State University
    Inventors: Dennis J Miller, Dushyant Shekhawat, Kirthivasan Nagarajan, James E. Jackson