Patents by Inventor Den-Yang Jan

Den-Yang Jan 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 CONVERTING OLEFINS TO DISTILLATE FUELS
    Publication number: 20240025821
    Abstract: A process for dimerizing and oligomerizing olefins to distillate fuels which manages the dimerization exotherm by diluting it with paraffins which are inert in the dimerization. The olefin stream can also be split and fed to multiple dimerization reactors to further reduce the heat generated. The ethylene feed can also be cooled before entering the dimerization reactor. The paraffins can be obtained from saturating oligomerized effluent.
    Type: Application
    Filed: July 25, 2022
    Publication date: January 25, 2024
    Inventors: Ashish Mathur, Charles Luebke, Manuela Serban, Den-Yang Jan, Eseoghene Jeroro, Hosoo Lim
  • Layered oligomerization catalyst system
    Patent number: 6649802
    Abstract: A process is disclosed for the oligomerization of light olefins to higher olefins. The process uses a catalyst that has an inert core and a thin layer of molecular sieve applied to the inert core. The molecular sieve is a crystalline silicoaluminate or metalloaluminophosphate and provides the acid sites for the oligomerization reactions. The thin layer provides for more selective control and limits the amount of oligomerization for liquid phase oligomerization processes.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: November 18, 2003
    Assignee: UOP LLC
    Inventors: Robert R. Frame, Den-Yang Jan, Hayim Abrevaya