Patents by Inventor Susan T. Evans

Susan T. Evans 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).

  • Zeolite SSZ-36
    Patent number: 6218591
    Abstract: The present invention relates to new crystalline zeolite SSZ-36 prepared using a cyclic or polycyclic quaternary ammonium cation templating agent.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: April 17, 2001
    Assignee: Chevron U.S.A. Inc.
    Inventors: Gregory S. Lee, Stacey I. Zones, Yumi Nakagawa, Susan T. Evans
  • Zeolite SSZ-39
    Patent number: 5958370
    Abstract: The present invention relates to new crystalline zeolite SSZ-39 prepared using a cyclic or polycyclic quaternary ammonium cation templating agent.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: September 28, 1999
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stacey I. Zones, Yumi Nakagawa, Susan T. Evans, Gregory S. Lee
  • Zeolite SSZ-36
    Patent number: 5939044
    Abstract: The present invention relates to new crystalline zeolite SSZ-36 prepared using a cyclic or polycyclic quaternary ammonium cation templating agent.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: August 17, 1999
    Assignee: Chevron U.S.A. Inc.
    Inventors: Yumi Nakagawa, Susan T. Evans, Gregory S. Lee, Stacey I. Zones
  • Preparing a crystalline aluminophosphate composition
    Patent number: 5552132
    Abstract: An aluminophosphate-type molecular sieve is prepared using a templating agent derived for an organosulfonium cation of the form S.sup.+ (R).sub.3, wherein each R is independently selected from alkyl, aryl and alkylaryl.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: September 3, 1996
    Assignee: Chevron U.S.A. Inc.
    Inventor: Susan T. Evans