Patents by Inventor Viorel D. Duma

Viorel D. Duma 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).

  • Patent number: 10589254
    Abstract: Spheroidal catalyst support, supported catalyst, and method of preparing and using the catalyst for hydrodemetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise titania alumina having 5 wt % or less titania and have greater than 30% percent of their pore volume in pores having a diameter of between 200 and 500 ?. Catalysts prepared from the supports contain Group 6, 9 and 10 metals or metal compounds supported on the titania alumina supports. Catalysts in accordance with the invention exhibit improved catalytic activity and stability to remove metals from heavy feedstocks during a hydrotreating process. The catalysts also provide increased sulfur and MCR conversion during a hydrotreating process.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 17, 2020
    Assignee: Advanced Refining Technologies LLC
    Inventors: Stanislaw Plecha, Narinobu Kagami, Viorel D. Duma, John Everett Creighton
  • Patent number: 10584288
    Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise alumina and 5 wt % or less titania. Catalyst prepared from the supports have at least 30 to 80 volume percent of its pore volume in pores having a diameter of between 200 and 500 angstroms. Catalysts in accordance with the invention exhibit improved catalytic activity and stability to remove metals from heavy feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: March 10, 2020
    Assignee: Advanced Refining Technologies LLC
    Inventors: Viorel D. Duma, Matthew P. Woods
  • Publication number: 20190184376
    Abstract: Spheroidal catalyst support, supported catalyst, and method of preparing and using the catalyst for hydrodemetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise titania alumina having 5 wt % or less titania and have greater than 30% percent of their pore volume in pores having a diameter of between 200 and 500 ?. Catalysts prepared from the supports contain Group 6, 9 and 10 metals or metal compounds supported on the titania alumina supports. Catalysts in accordance with the invention exhibit improved catalytic activity and stability to remove metals from heavy feedstocks during a hydrotreating process. The catalysts also provide increased sulfur and MCR conversion during a hydrotreating process.
    Type: Application
    Filed: February 26, 2019
    Publication date: June 20, 2019
    Applicant: Advanced Refining Technologies LLC
    Inventors: Stanislaw Plecha, Narinobu Kagami, Viorel D. Duma, John Everett Creighton
  • Patent number: 9908105
    Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise precipitated alumina prepared by a low temperature pH swing process. A large portion of the pore volume of the catalyst supports has pores with a diameter in the range of about 200 ? to about 500 ?. Catalysts prepared from the supports of the invention exhibit improved catalytic activity and stability to remove metals from heavy hydrocarbon feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion during the hydroconversion process.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: March 6, 2018
    Assignee: Advanced Refining Technologies LLC
    Inventors: Viorel D. Duma, Matthew P. Woods, Stanislaw Plecha
  • Publication number: 20160074840
    Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise precipitated alumina prepared by a low temperature pH swing process. A large portion of the pore volume of the catalyst supports has pores with a diameter in the range of about 200 ? to about 500 ?. Catalysts prepared from the supports of the invention exhibit improved catalytic activity and stability to remove metals from heavy hydrocarbon feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion during the hydroconversion process.
    Type: Application
    Filed: November 24, 2015
    Publication date: March 17, 2016
    Inventors: Viorel D. Duma, Matthew P. Woods, Stanislaw Plecha
  • Publication number: 20160017240
    Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise alumina and 5 wt % or less titania. Catalyst prepared from the supports have at least 30 to 80 volume percent of its pore volume in pores having a diameter of between 200 and 500 angstroms. Catalysts in accordance with the invention exhibit improved catalytic activity and stability to remove metals from heavy feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion.
    Type: Application
    Filed: February 14, 2013
    Publication date: January 21, 2016
    Applicant: ADVANCED REFINING TECHNOLOGIES LLC
    Inventors: Viorel D. Duma, Matthew P. Woods
  • Patent number: 9216407
    Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise precipitated alumina prepared by a low temperature pH swing process. A large portion of the pore volume of the catalyst supports has pores with a diameter in the range of about 200 ? to about 500 ?. Catalysts prepared from the supports of the invention exhibit improved catalytic activity and stability to remove metals from heavy hydrocarbon feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion during the hydroconversion process.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: December 22, 2015
    Assignee: Advanced Refining Technologies LLC
    Inventors: Viorel D. Duma, Matthew P. Woods, Stanislaw Plecha
  • Publication number: 20140262956
    Abstract: Catalyst supports, supported catalysts, and a method of preparing and using the catalysts for the demetallation of metal-containing heavy oil feedstocks are disclosed. The catalyst supports comprise precipitated alumina prepared by a low temperature pH swing process. A large portion of the pore volume of the catalyst supports has pores with a diameter in the range of about 200 ? to about 500 ?. Catalysts prepared from the supports of the invention exhibit improved catalytic activity and stability to remove metals from heavy hydrocarbon feedstocks during a hydroconversion process. The catalysts also exhibit increased sulfur and MCR conversion during the hydroconversion process.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: ADVANCED REFINING TECHNOLOGIES LLC
    Inventors: Viorel D. Duma, Matthew P. Woods, Stanislaw Plecha