Patents by Inventor Wendy B. Dominguez

Wendy B. Dominguez 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 of hydrotreating and/or hydrocracking hydrocarbon streams or tail gas treating sulfur-containing gas streams
    Patent number: 5468372
    Abstract: The invention relates to an improved method of presulfurizing a sulfidable metal oxide(s)-containing catalyst which minimizes sulfur stripping upon start-up of a reactor and improves catalyst activity. The method consists of contacting a sulfidable metal oxide(s)-containing catalyst with elemental sulfur at a temperature such that said elemental sulfur is substantially incorporated in the pores of said catalyst by sublimation and/or melting and heating the sulfur-incorporated catalyst in the presence of a liquid olefinic hydrocarbon at a temperature greater than about 150.degree. C.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: November 21, 1995
    Assignee: Shell Oil Company
    Inventors: James D. Seamans, Charles T. Adams, Wendy B. Dominguez, Andrew A.-J. Chen
  • Presulfurized hydrotreating, hydrocracking or tail gas treating catalyst
    Patent number: 5292702
    Abstract: The invention relates to an unproved method of presulfurizing a sulfidable metal oxide(s)-containing catalyst which minimizes sulfur stripping upon start-up of a reactor and improves catalyst activity. The method consists of contacting a sulfidable metal oxide(s)-containing catalyst with elemental sulfur at a temperature such that said elemental sulfur is substantially incorporated in the pores of said catalyst by sublimation and/or melting and heating the sulfur-incorporated catalyst in the presence of a liquid olefinic hydrocarbon at a temperature greater than about 150.degree. C.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: March 8, 1994
    Assignee: CRI International, Inc.
    Inventors: James D. Seamans, Charles T. Adams, Wendy B. Dominguez, Andrew A. Chen
  • Method of presulfurizing a hydrotreating, hydrocracking or tail gas treating catalyst
    Patent number: 5215954
    Abstract: The invention relates to an improved method of presulfurizing a sulfidable metal oxide(s)-containing catalyst which minimizes sulfur stripping upon start-up of a reactor and improves catalyst activity. The method consists of contacting a sulfidable metal oxide(s)-containing catalyst with elemental sulfur at a temperature such that said elemental sulfur is substantially incorporated in the pores of said catalyst by sublimation and/or melting and heating the sulfur-incorporated catalyst in the presence of a liquid olefinic hydrocarbon at a temperature greater than about 150.degree. C.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: June 1, 1993
    Assignee: CRI International, Inc.
    Inventors: James D. Seamans, Charles T. Adams, Wendy B. Dominguez, Andrew A. Chen