Patents by Inventor Kaushik MAJUMDER

Kaushik MAJUMDER 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 to prepare paraffin wax
    Patent number: 10774277
    Abstract: A process to prepare paraffins and waxes is provided, the process comprising: subjecting a Fischer-Tropsch product stream comprising paraffins having from 10 to 300 carbon atoms to a hydrogenation step, thereby obtaining a hydrogenated Fischer-Tropsch product stream comprising 10 to 300 carbon atoms; separating the hydrogenated Fischer-Tropsch product stream, thereby obtaining at least a fraction comprising 10 to 17 carbon atoms and a fraction comprising 18 to 300 carbon atoms; separating the fraction comprising 18 to 300 carbon atoms, thereby obtaining one or more first light waxes having a congealing point in the range of 30 to 75° C. and a second heavy wax having a congealing point in the range of 75 to 120° C.; and hydrofinishing one or more wax fractions having a congealing point in the range of 30 to 75° C. thereby obtaining one or more hydrofinished wax fractions having a congealing point in the range of 30 to 75° C.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: September 15, 2020
    Assignee: SHELL OIL COMPANY
    Inventors: Arend Hoek, Antonius Adrianus Maria Roovers, Kaushik Majumder, Hélène Toledano
  • Process to prepare a heavy paraffin wax
    Patent number: 10723881
    Abstract: The present invention provides a paraffin wax having a congealing point according to ASTM D938 of at least 100° C. and a Saybolt colour according to ASTM D156 of at least 25 cm.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: July 28, 2020
    Assignee: SHELL OIL COMPANY
    Inventors: Arend Hoek, Antonius Adrianus Maria Roovers, Kaushik Majumder
  • PROCESS TO PREPARE PARAFFIN WAX
    Publication number: 20180002618
    Abstract: The present invention provides a paraffin wax having a congealing point according to ASTM D938 of at least 75° C. and a Saybolt colour according to ASTM D156 of at least 25 cm.
    Type: Application
    Filed: December 29, 2015
    Publication date: January 4, 2018
    Inventors: Arend HOEK, Antonius Adrianus Maria ROOVERS, Kaushik MAJUMDER
  • PROCESS TO PREPARE PARAFFIN WAX
    Publication number: 20170369799
    Abstract: A process to prepare paraffins and waxes is provided, the process comprising: subjecting a Fischer-Tropsch product stream comprising paraffins having from 10 to 300 carbon atoms to a hydrogenation step, thereby obtaining a hydrogenated Fischer-Tropsch product stream comprising 10 to 300 carbon atoms; separating the hydrogenated Fischer-Tropsch product stream, thereby obtaining at least a fraction comprising 10 to 17 carbon atoms and a fraction comprising 18 to 300 carbon atoms; separating the fraction comprising 18 to 300 carbon atoms, thereby obtaining one or more first light waxes having a congealing point in the range of 30 to 75° C. and a second heavy wax having a congealing point in the range of 75 to 120° C.; and hydrofinishing one or more wax fractions having a congealing point in the range of 30 to 75° C. thereby obtaining one or more hydrofinished wax fractions having a congealing point in the range of 30 to 75° C.
    Type: Application
    Filed: December 29, 2015
    Publication date: December 28, 2017
    Inventors: Arend HOEK, Antonius Adrianus Maria ROOVERS, Kaushik MAJUMDER, Hélène TOLEDANO
  • PROCESS TO PREPARE A HEAVY PARAFFIN WAX
    Publication number: 20170355852
    Abstract: The present invention provides a paraffin wax having a congealing point according to ASTM D938 of at least 100° C. and a Saybolt colour according to ASTM D156 of at least 25 cm.
    Type: Application
    Filed: December 29, 2015
    Publication date: December 14, 2017
    Inventors: Arend HOEK, Antonius Adrianus Maria ROOVERS, Kaushik MAJUMDER