Patents by Inventor Ashis Ranjan Bandyopadhyay

Ashis Ranjan Bandyopadhyay 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).

  • Catalytic oligomerization of octenes
    Patent number: 9546231
    Abstract: In accordance with the present disclosure there is provided a process for preparing a hydrogenated olefin polymer by hydrogenation of a polyoctene; said polyoctene being prepared by reacting a C8-olefin feed comprising an isomeric mixture of an alpha-olefin and a non-alpha olefin monomer in a controlled manner with the help of an ionic catalyst, while controlling at least one condition of the reaction selected from the group of condition consisting of exotherm, contact time of the olefin feed with ionic catalyst and molar ratio of the ionic catalyst to the olefin feed within predetermined ranges to obtain an oligomerized mixture comprising at least one polyoctene and unreacted ionic catalyst.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: January 17, 2017
    Assignee: Reliance Industries Limited
    Inventors: Rajshekhar Ghosh, Ashis Ranjan Bandyopadhyay, Rakshvir Jasra
  • CATALYTIC OLIGOMERIZATION OF OCTENES
    Publication number: 20150183901
    Abstract: In accordance with the present disclosure there is provided a process for preparing a hydrogenated olefin polymer by hydrogenation of a polyoctene; said polyoctene being prepared by reacting a C8-olefin feed comprising an isomeric mixture of an alpha-olefin and a non-alpha olefin monomer in a controlled manner with the help of an ionic catalyst, while controlling at least one condition of the reaction selected from the group of condition consisting of exotherm, contact time of the olefin feed with ionic catalyst and molar ratio of the ionic catalyst to the olefin feed within predetermined ranges to obtain an oligomerized mixture comprising at least one polyoctene and unreacted ionic catalyst.
    Type: Application
    Filed: January 30, 2015
    Publication date: July 2, 2015
    Inventors: Rajshekhar Ghosh, Ashis Ranjan Bandyopadhyay, Rakshvir Jasra
  • 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