Patents by Inventor Sudevan Sujith

Sudevan Sujith 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 Polyethylene Polymerization Catalyst
    Publication number: 20250115684
    Abstract: Provided is a method for preparing a polyethylene polymerization catalyst including a first mixed solution preparation step of mixing a magnesium compound, a first hydrocarbon compound, and alcohol to prepare a first mixed solution; a viscosity adjustment step of adding a second hydrocarbon compound to the first mixed solution to adjust a viscosity of the first mixed solution; a second mixed solution preparation step of adding a first internal electron donor to the first mixed solution having an adjusted viscosity to prepare a second mixed solution; and a recrystallization step of adding a transition metal compound to the second mixed solution to perform recrystallization.
    Type: Application
    Filed: January 23, 2024
    Publication date: April 10, 2025
    Inventors: Dong Kou Kim, Mun Hyung Kang, Maeng Sun Eo, Sudevan Sujith
  • Oligomerization of ethylene
    Patent number: 10919819
    Abstract: Provided is a method for oligomerization of ethylene, and more particularly, a method for producing 1-hexene and 1-octene at a high selectivity under an ethylene atmosphere by inducing a remarkably improved catalytic activity while effectively reducing a production amount of polyethylene by introducing the oligomerization catalyst and a cocatalyst mixture containing at least two aluminums together and adjusting the kind of oligomerization catalyst and injection conditions thereof.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: February 16, 2021
    Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.
    Inventors: Sudevan Sujith, So Hee Sim, Hyo Seung Park, Sun Young Kim, Sang Ick Lee, Han Sol Lee
  • Method for producing poly(alkylene carbonate)polyol
    Patent number: 10604624
    Abstract: Provided is a method for producing poly(alkylene carbonate)polyol, and specifically, a method for producing poly(alkylene carbonate)polyol having carbonate, ester, and ether bonds by mixing a Salen-based catalyst and a double metal cyanide catalyst.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: March 31, 2020
    Assignee: SK Innovation Co., Ltd.
    Inventors: Sudevan Sujith, Je Ho Lee
  • Oligomerization of Ethylene
    Publication number: 20190284109
    Abstract: Provided is a method for oligomerization of ethylene, and more particularly, a method for producing 1-hexene and 1-octene at a high selectivity under an ethylene atmosphere by inducing a remarkably improved catalytic activity while effectively reducing a production amount of polyethylene by introducing the oligomerization catalyst and a cocatalyst mixture containing at least two aluminums together and adjusting the kind of oligomerization catalyst and injection conditions thereof.
    Type: Application
    Filed: July 5, 2017
    Publication date: September 19, 2019
    Inventors: Sudevan Sujith, So Hee Sim, Hyo Seung Park, Sun Young Kim, Sang Ick Lee, Han Sol Lee
  • Method for Producing Poly(Alkylene Carbonate)Polyol
    Publication number: 20170247509
    Abstract: Provided is a method for producing poly(alkylene carbonate)polyol, and specifically, a method for producing poly(alkylene carbonate)polyol having carbonate, ester, and ether bonds by mixing a Salen-based catalyst and a double metal cyanide catalyst.
    Type: Application
    Filed: February 21, 2017
    Publication date: August 31, 2017
    Inventors: Sudevan Sujith, Je Ho Lee