Patents by Inventor Hari Chand Bajaj

Hari Chand Bajaj 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).

  • Preparation of gamma-butyrolactone by catalytic hydrogenation of maleic anhydride
    Patent number: 6380402
    Abstract: Disclosed is a process for effecting liquid-phase hydrogenation of MAN to GBL in high conversion and high selectivity. The present invention provides an improved process of catalytic hydrogenation for converting MAN or SA to GBL in the liquid phase in the presence of a noble metal (palladium-molybdenum-nickel) catalyst supported on silica having a large surface area. The catalytic hydrogenation is conducted at a temperature of 150 to 250° C. and under a pressure of 50 to 150 kg/cm2.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: April 30, 2002
    Assignee: Korea Institute of Energy Research
    Inventors: Soon-Haeng Cho, Tae-Hwan Kim, Kweon-Ill Kim, Sung-Chul Cho, Jong-Kee Park, Heon-Do Jeong, Hari Chand Bajaj
  • Preparation of gamma-butyrolactone by catalytic hydrogenation of maleic anhydride
    Publication number: 20010029302
    Abstract: Disclosed is a process for effecting liquid-phase hydrogenation of MAN to GBL in high conversion and high selectivity. The present invention provides an improved process of catalytic hydrogenation for converting MAN or SA to GBL in the liquid phase in the presence of a noble metal (palladium-molybdenum-nickel) catalyst supported on silica having a large surface area. The catalytic hydrogenation is conducted at a temperature of 150 to 250° C. and under a pressure of 50 to 150 kg/cm2.
    Type: Application
    Filed: December 22, 2000
    Publication date: October 11, 2001
    Inventors: Soon-Haeng Cho, Tae-Hwan Kim, Kweon-Ill Kim, Sung-Chul Cho, Jong-Kee Park, Heon-Do Jeong, Hari Chand Bajaj