Patents by Inventor M. Ravindranathan

M. Ravindranathan 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 preparation of linear low molecular weight olefins by the oligomerization of ethylene
    Patent number: 6930218
    Abstract: A process for the preparation of low molecular weight linear alpha olefins is disclosed. The process comprises oligomerising ethylene in an inert aliphatic or aromatic solvent in the presence of a catalyst comprising of a first component selected from zirconium alkoxide and zirconium aryloxide and a second component selected from alkyl aluminum halide and/or alkyl aluminum.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: August 16, 2005
    Assignee: Indian Petrochemicals Corporation Limited
    Inventors: Gopal Laxman Tembe, S. Muthukumaru Pillai, M. Ravindranathan
  • Process for the manufacture of polyolefins using non-metallocene catalysts
    Publication number: 20030225227
    Abstract: The present invention discloses a process for the polymerization of olefins in the presence of a catalyst comprising metal complexes of 2,6-diacetylpyridine bis-imines Preferably, the metal is a trivalent metal is selected from the group consisting of trivalent Fe, Ru, or Cr.
    Type: Application
    Filed: October 21, 2002
    Publication date: December 4, 2003
    Applicant: INDIAN PETROCHEMICALS CORPORATION LIMITED
    Inventors: Subhasis Talapatra, M. S. Choudhary, G. L. Tembe, A. R. Bandyopadhyay, V. K. Upadhyay, R. C. Jain, M. Ravindranathan
  • Process for the preparation of liniear low molecular weight olefins by the oligomerization of ethylene
    Publication number: 20020147375
    Abstract: A process for the preparation of low molecular weight linear alpha olefins is disclosed. The process comprises oligomerising ethylene in an inert aliphatic or aromatic solvent in the presence of a catalyst comprising of a first component selected from zirconium alkoxide and zirconium aryloxide and a second component selected from alkyl aluminum halide and/or alkyl aluminum.
    Type: Application
    Filed: August 23, 2001
    Publication date: October 10, 2002
    Applicant: INDIAN PETROCHEMICALS CORPORATION LIMITED
    Inventors: Gopal Laxman Tembe, S. Muthukumaru Pillai, M. Ravindranathan
  • Process for manufacture of linear alpha-olefins using a titanium component and an organoaluminum halide component
    Patent number: 6121502
    Abstract: A process for the manufacture of linear alpha-olefins is disclosed. The process employs, for the purposes of oligomerizing an unsaturated aliphatic hydrocarbon to linear alpha-olefins, a catalyst mixture comprising titanium aryl and/or titanium alkoxide, organoaluminum halide and optionally one or more additives selected from a group containing phosphorus, oxygen and sulphur compounds.
    Type: Grant
    Filed: February 19, 1997
    Date of Patent: September 19, 2000
    Assignee: Indian Petrochemicals Corporation Limited
    Inventors: Gopal Laxman Tembe, Ashis Ranjan Bandyopadhyay, S. Muthukumaru Pillai, Sheo Satish, M. Ravindranathan
  • Process for the preparation of low molecular weight alpha olefins
    Patent number: 6013850
    Abstract: A process to maximize the production of low molecular weight alpha olefins from ethylene is disclosed. The process comprises oligomerizing ethylene in the presence of a catalyst, of titanium aryloxide and/or titanium alkoxide; alkyl aluminum halide and triaryl phosphine and/or trialkyl phosphine in the temperature range of 80.degree. C. to 110.degree. C. at substantially low pressures of from 60 to 150 psi. A continuous supply of ethylene is maintained.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: January 11, 2000
    Assignee: Indian Petrochemicals Corporation Limited
    Inventors: G. L. Tembe, S. Muthukumaru Pillai, Sheo Satish, M. Ravindranathan