Patents by Inventor Laura MITCHELL-DOWNIE

Laura MITCHELL-DOWNIE 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).

  • Passive NOx adsorber
    Patent number: 11103858
    Abstract: A NOx absorber catalyst for treating an exhaust gas from a lean burn engine. The NOx absorber catalyst comprises a molecular sieve catalyst comprising a noble metal and a molecular sieve, wherein the molecular sieve contains the noble metal; an oxygen storage material for protecting the molecular sieve catalyst; and a substrate having an inlet end and an outlet end.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: August 31, 2021
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Andrew Francis Chiffey, Jack Corps, Laura Mitchell-Downie, Francois Moreau, Matthew O'Brien
  • Passive NOadsorber
    Patent number: 10975745
    Abstract: A NOx absorber catalyst for treating an exhaust gas from a diesel engine. The NOx absorber catalyst comprises a first NOx absorber material comprising a molecular sieve catalyst, wherein the molecular sieve catalyst comprises a noble metal and a molecular sieve, and wherein the molecular sieve contains the noble metal; a second NOx absorber material comprising palladium (Pd) supported on an oxide of cerium; and a substrate having an inlet end and an outlet end.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: April 13, 2021
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Andrew Francis Chiffey, Jack Corps, Laura Mitchell-Downie, Francois Moreau, Matthew O'Brien
  • PASSIVE NOx ADSORBER
    Publication number: 20190168200
    Abstract: A NOx absorber catalyst for treating an exhaust gas from a lean burn engine. The NOx absorber catalyst comprises a molecular sieve catalyst comprising a noble metal and a molecular sieve, wherein the molecular sieve contains the noble metal; an oxygen storage material for protecting the molecular sieve catalyst; and a substrate having an inlet end and an outlet end.
    Type: Application
    Filed: February 12, 2019
    Publication date: June 6, 2019
    Inventors: Andrew Francis CHIFFEY, Jack CORPS, Laura MITCHELL-DOWNIE, Francois MOREAU, Matthew O'BRIEN
  • Passive NOadsorber
    Patent number: 10213775
    Abstract: A NOx absorber catalyst for treating an exhaust gas from a lean burn engine. The NOx absorber catalyst comprises a molecular sieve catalyst comprising a noble metal and a molecular sieve, wherein the molecular sieve contains the noble metal; an oxygen storage material for protecting the molecular sieve catalyst; and a substrate having an inlet end and an outlet end.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: February 26, 2019
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Andrew Francis Chiffey, Jack Corps, Laura Mitchell-Downie, Francois Moreau, Matthew O'Brien
  • PASSIVE NOx ADSORBER
    Publication number: 20180304244
    Abstract: A NOx absorber catalyst for treating an exhaust gas from a diesel engine. The NOx absorber catalyst comprises a first region comprising a NOx absorber material comprising a molecular sieve catalyst, and a second region comprising a nitrogen dioxide reduction material; and a substrate having an inlet end and an outlet end.
    Type: Application
    Filed: April 23, 2018
    Publication date: October 25, 2018
    Inventors: Yannick Daniel BIDAL, Andrew CHIFFEY, Jack CORPS, Laura MITCHELL-DOWNIE, Francois MOREAU, Matthew O'BRIEN
  • PASSIVE NOx ADSORBER
    Publication number: 20170096923
    Abstract: A NOx absorber catalyst for treating an exhaust gas from a diesel engine. The NOx absorber catalyst comprises a first NOx absorber material comprising a molecular sieve catalyst, wherein the molecular sieve catalyst comprises a noble metal and a molecular sieve, and wherein the molecular sieve contains the noble metal; a second NOx absorber material comprising palladium (Pd) supported on an oxide of cerium; and a substrate having an inlet end and an outlet end.
    Type: Application
    Filed: October 5, 2016
    Publication date: April 6, 2017
    Inventors: Andrew Francis CHIFFEY, Jack CORPS, Laura MITCHELL-DOWNIE, Francois MOREAU, Matthew O'BRIEN
  • PASSIVE NOx ADSORBER
    Publication number: 20170095805
    Abstract: A NOx absorber catalyst for treating an exhaust gas from a lean burn engine. The NOx absorber catalyst comprises a molecular sieve catalyst comprising a noble metal and a molecular sieve, wherein the molecular sieve contains the noble metal; an oxygen storage material for protecting the molecular sieve catalyst; and a substrate having an inlet end and an outlet end.
    Type: Application
    Filed: October 5, 2016
    Publication date: April 6, 2017
    Inventors: Andrew Francis CHIFFEY, Jack CORPS, Laura MITCHELL-DOWNIE, Francois MOREAU, Matthew O'BRIEN