Patents by Inventor E. Alejandro Leon-Escamilla

E. Alejandro Leon-Escamilla 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 C8 alkylaromatic isomerization
    Patent number: 8247630
    Abstract: A process for isomerizing ethylbenzene into xylenes such as para-xylene using a zeolitic catalyst system based on low Si/Al2 MTW-type zeolite that preferably is substantially free of mordenite. The catalyst may be bimetallic where the two metals are platinum and tin.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: August 21, 2012
    Assignee: UOP LLC
    Inventors: Paula L. Bogdan, John E. Bauer, E. Alejandro Leon-Escamilla, Gregory F. Maher, Robert B. Larson
  • Process for C8 Alkylaromatic Isomerization
    Publication number: 20090171135
    Abstract: A process for isomerizing ethylbenzene into xylenes such as para-xylene using a zeolitic catalyst system based on low Si/Al2 MTW-type zeolite that preferably is substantially free of mordenite. The catalyst may be bimetallic where the two metals are platinum and tin.
    Type: Application
    Filed: March 12, 2009
    Publication date: July 2, 2009
    Inventors: Paula L. Bogdan, John E. Bauer, E. Alejandro Leon-Escamilla, Gregory F. Maher, Robert B. Larson
  • Process for C8 alkylaromatic isomerization
    Patent number: 7525008
    Abstract: A process for isomerizing ethylbenzene into xylenes such as para-xylene using a zeolitic catalyst system based on low Si/Al2 MTW-type zeolite that preferably is substantially free of mordenite. The catalyst may be bimetallic where the two metals are platinum and tin.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: April 28, 2009
    Assignee: UOP LLC
    Inventors: Paula L. Bogdan, John E. Bauer, E. Alejandro Leon-Escamilla, Gregory F. Maher, Robert B. Larson
  • Zirconium silicate and zirconium germanate molecular sieves and process using the same
    Patent number: 5891417
    Abstract: A new family of crystalline molecular sieves have been synthesized. These compositions have a microporous structure of ZrO.sub.3 octahedral units, and at least one of SiO.sub.2 tetrahedral units and GeO.sub.2 tetrahedral units. Optionally, the molecular sieves contain M metals such as titanium, niobium, or tin. These novel molecular sieves are prepared hydrothermally from a reaction mixture composed of reactive sources of the components. Additionally, these molecular sieves are useful for the selective adsorption of ammonium ions.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: April 6, 1999
    Assignee: Uop LLC
    Inventors: David S. Bem, John D. Sherman, Amedeo Napolitano, E. Alejandro Leon-Escamilla, Gregory J. Lewis, Robert L. Bedard
  • Zirconium silicate molecular sieves and process using the same
    Patent number: 5888472
    Abstract: A new family of crystalline molecular sieves have been synthesized. These compositions have a microporous structure of at least ZrO.sub.3 octahedral units and SiO.sub.2 tetrahedral units. Optionally, the molecular sieves contain M metals such as titanium or tin. These novel molecular sieves are prepared hydrothermally from a reaction mixture composed of reactive sources of the components. Additionally, these molecular sieves are useful for the selective adsorption of ammonium ions.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: March 30, 1999
    Assignee: UOP LLC
    Inventors: David S. Bem, John D. Sherman, Amedeo Napolitano, E. Alejandro Leon-Escamilla, Gregory J. Lewis, Robert L. Bedard