Patents by Inventor Alejandra RIVAS-CARDONA

Alejandra RIVAS-CARDONA 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).

  • Mixed template synthesis of low silica CHA zeolite
    Patent number: 11266981
    Abstract: A transition-metal-CHA molecular sieve catalyst and mixed-template synthesis procedure are disclosed.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: March 8, 2022
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Alejandra Rivas-Cardona, Joseph Michael Fedeyko, Hai-Ying Chen, Raul Francisco Lobo, Eric Burkholder, Qingling Liu
  • Mixed template synthesis of high silica Cu-CHA
    Patent number: 11207666
    Abstract: A transition-metal-CHA molecular sieve catalyst and mixed-template synthesis procedure are disclosed.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: December 28, 2021
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Alejandra Rivas-Cardona, Joseph Michael Fedeyko, Hai-Ying Chen
  • SCR catalyst
    Patent number: 11027265
    Abstract: A copper-CHA zeolite catalyst for SCR of NOx is disclosed.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: June 8, 2021
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Alejandra Rivas-Cardona, Joseph Michael Fedeyko, Hai-Ying Chen
  • SCR CATALYST
    Publication number: 20200108376
    Abstract: A copper-CHA zeolite catalyst for SCR of NOx is disclosed.
    Type: Application
    Filed: December 6, 2019
    Publication date: April 9, 2020
    Inventors: Alejandra RIVAS-CARDONA, Joseph Michael FEDEYKO, Hai-Ying CHEN
  • SCR catalyst
    Patent number: 10512905
    Abstract: A copper-CHA zeolite catalyst for SCR of NOx is disclosed.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: December 24, 2019
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Alejandra Rivas-Cardona, Joseph Michael Fedeyko, Hai-Ying Chen
  • BI-METAL MOLECULAR SIEVE CATALYSTS
    Publication number: 20190001313
    Abstract: Provided is a catalyst composition comprising a small pore molecular sieve, about 0.5-5 weight percent of a transition metal (TM) selected from copper and/or iron, based on the total weight of the zeolite, and about 0.5-5 weight percent nickel, based on the total weight of the molecular sieve, wherein the transition metal and nickel are present in a TM:Ni ratio of about 10:1 to about 1:2. Also provided is a synthesis method for preparing a small pore molecular sieve having both Cu and Ni incorporated in situ. Also provided is a method for using such a catalyst for selectively reducing NOx in an exhaust gas.
    Type: Application
    Filed: August 27, 2018
    Publication date: January 3, 2019
    Inventors: Alejandra RIVAS-CARDONA, Hai-Ying CHEN, Joseph Michael FEDEYKO
  • Synthesis of AEI zeolite
    Patent number: 9480976
    Abstract: A transition-metal-AEI/ITE molecular sieve catalyst and mixed-template synthesis procedure are disclosed.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: November 1, 2016
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Alejandra Rivas-Cardona, Joseph Michael Fedeyko, Hai-Ying Chen
  • BI-METAL MOLECULAR SIEVE CATALYSTS
    Publication number: 20160243533
    Abstract: Provided is a catalyst composition comprising a small pore molecular sieve, about 0.5-5 weight percent of a transition metal (TM) selected from copper and/or iron, based on the total weight of the zeolite, and about 0.5-5 weight percent nickel, based on the total weight of the molecular sieve, wherein the transition metal and nickel are present in a TM:Ni ratio of about 10:1 to about 1:2. Also provided is a synthesis method for preparing a small pore molecular sieve having both Cu and Ni incorporated in situ. Also provided is a method for using such a catalyst for selectively reducing NOx in an exhaust gas.
    Type: Application
    Filed: February 19, 2016
    Publication date: August 25, 2016
    Inventors: Alejandra RIVAS-CARDONA, Hai-Ying CHEN, Joseph Michael FEDEYKO
  • AFX ZEOLITE
    Publication number: 20160137518
    Abstract: Provided is a novel form of AFX zeolite, a novel synthesis technique for producing pure phase AFX zeolite, a catalyst comprising the AFX zeolite in combination with a metal, and methods of using the same.
    Type: Application
    Filed: November 13, 2015
    Publication date: May 19, 2016
    Inventors: Alejandra RIVAS-CARDONA, Hai-Ying CHEN, Joseph Michael FEDEYKO
  • Molecular Sieve Catalyst For Treating Exhaust Gas
    Publication number: 20160096169
    Abstract: Provided is novel catalyst for treating NOx in an exhaust gas, wherein the catalyst comprises a metal promoted high SAR zeolite having an AFX framework.
    Type: Application
    Filed: October 6, 2015
    Publication date: April 7, 2016
    Inventors: Alejandra RIVAS-CARDONA, Joseph Michael FEDEYKO, Hai-Ying CHEN
  • SCR CATALYST
    Publication number: 20150151288
    Abstract: A copper-CHA zeolite catalyst for SCR of NOx is disclosed.
    Type: Application
    Filed: December 3, 2014
    Publication date: June 4, 2015
    Inventors: Alejandra RIVAS-CARDONA, Joseph Michael FEDEYKO, Hai-Ying CHEN
  • MIXED TEMPLATE SYNTHESIS OF HIGH SILICA Cu-CHA
    Publication number: 20150151287
    Abstract: A transition-metal-CHA molecular sieve catalyst and mixed-template synthesis procedure are disclosed.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 4, 2015
    Inventors: Alejandra RIVAS-CARDONA, Joseph Michael FEDEYKO, Hai-Ying CHEN
  • SYNTHESIS OF AEI ZEOLITE
    Publication number: 20150151285
    Abstract: A transition-metal-AEI/ITE molecular sieve catalyst and mixed-template synthesis procedure are disclosed.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 4, 2015
    Inventors: Alejandra RIVAS-CARDONA, Joseph Michael FEDEYKO, Hai-Ying CHEN
  • MIXED TEMPLATE SYNTHESIS OF LOW SILICA CHA ZEOLITE
    Publication number: 20150151286
    Abstract: A transition-metal-CHA molecular sieve catalyst and mixed-template synthesis procedure are disclosed.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 4, 2015
    Inventors: Alejandra RIVAS-CARDONA, Joseph Michael FEDEYKO, Hai-Ying CHEN, Raul Francisco LOBO, Eric BURKHOLDER, Qingling LIU