Patents Assigned to Johnson Matthey Public Limited Company
  • Patent number: 12275024
    Abstract: A washcoat showerhead for depositing a washcoat onto a face of a substrate comprises a housing having an inlet for receiving the washcoat, a showerhead plate and a baffle. The housing and showerhead plate define a showerhead cavity with the baffle located within the showerhead cavity. The showerhead plate has a plurality of nozzle apertures for discharging the washcoat towards the face of the substrate. The baffle comprises an impermeable central body and a plurality of arms extending from the impermeable central body, the plurality of arms defining a plurality of flow apertures circumferentially arranged around the impermeable central body.
    Type: Grant
    Filed: October 4, 2023
    Date of Patent: April 15, 2025
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Neil Burgess, Jamie Savage, Craig Thomson
  • Patent number: 12251683
    Abstract: A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; and a first catalytic region on the substrate; wherein the first catalytic region comprises a first PGM component and a first alumina, wherein the first alumina is doped with a first dopant of at least 5 wt. %, and wherein the first dopant is selected from the group consisting of Zr, Ta, Mo, W, Ti, Nb, and a combination thereof.
    Type: Grant
    Filed: December 12, 2023
    Date of Patent: March 18, 2025
    Assignee: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Shuhei Nagaoka, Xiaorui Zhang
  • Patent number: 12240866
    Abstract: A compound of formula (I) wherein M is Pd(II) or Ni(II); X is a halide; R1 and R2 are independently organic groups having 1-20 carbon atoms, or R1 and R2 are linked to form a ring structure with the phosphorus atom; R3 is an organic group having 1-20 carbon atoms; provided that R1, R2, R3 are not each phenyl.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: March 4, 2025
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Rachel Kahan, Mateusz Pitak, Carin Seechurn
  • Patent number: 12201966
    Abstract: Catalyst compositions and methods of preparation comprising: exchanging a rare earth element into a molecular sieve; incorporating a promoter metal into the molecular sieve; wherein the rare earth element exchanging step and the promoter metal incorporation step are performed as separate steps.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: January 21, 2025
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Daniel Robert Avis, Alexander Nicholas Michael Green, Matthew Eben Harris, Oliver Hemming, Loredana Mantarosie, Alanna Susan Murphy, Maria Pia Ruggeri
  • Patent number: 12201969
    Abstract: A method of forming an inorganic oxide coating on a monolith article to produce a coated monolith article suitable for the treatment of an exhaust gas comprises spraying, as a dry particulate aerosol, inorganic particles and a silicone resin to form a coating layer. The present invention also provides an uncalcined porous monolith article for use in forming a monolith article for the treatment of an exhaust gas. The uncalcined monolith article comprises a dry particulate composition comprising inorganic particles and a silicone resin.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: January 21, 2025
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Kaneshalingam Arulraj, Peter Bellham, Alexander De Bruin, Guy Richard Chandler, Chris Corrigan, David Marvell, John Turner
  • Patent number: 12194441
    Abstract: A catalytic article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a support; a second catalytic region comprising a second PGM component on a support with low ammonia storage and a first SCR catalyst; and wherein the first catalytic region is covered by at least another catalytic region.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: January 14, 2025
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Alexander Nicholas Green, Neil Greenham, Matthew Eben Harris
  • Patent number: 12172149
    Abstract: A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component, wherein the first PGM component comprises Rh and Pt; a second catalytic region comprising a second PGM component, wherein the second PGM component comprises Pd; and wherein the first PGM component has a Pt to Rh ratio of at least 1:20.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: December 24, 2024
    Assignees: JOHNSON MATTHEY PUBLIC LIMITED COMPANY, JOHNSON MATTHEY (SHANGHAI) CHEMICALS COMPANY
    Inventors: Michael Howard, Dongxia Liu, Dongsheng Qiao, Zhou Shang, Maria Vlachou, Xuan Xu
  • Patent number: 12162816
    Abstract: Disclosed herein is a method of reducing an aromatic nitro compound. In some embodiments the method comprises the step of contacting an aromatic nitro compound with a catalyst, wherein, the catalyst comprises, a disproportionation agent, and a biocatalyst. Also disclosed is a biocatalyst for use in the method, use of a disproportionation agent, and a biocatalyst, as a catalyst for reducing an aromatic nitro compound, and a kit comprising a disproportionation agent, and a biocatalyst.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: December 10, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Serena Bisagni, Amin Bornadel, Beatriz Dominguez, Jacques Lepaih, Ahir Pushpanath, Iustina Slabu, Jason Tedrow, Steven Mennen, Simon Hedley
  • Patent number: 12129778
    Abstract: A system comprising (i) a vehicular compression ignition engine comprising one or more engine cylinders and one or more electronically-controlled fuel injectors therefor; (ii) an exhaust line for the engine comprising: a first emissions control device comprising a first honeycomb substrate, which comprises a hydrocarbon adsorbent component; and a second emissions control device comprising an electrically heatable element and a catalysed second honeycomb substrate, which comprises a rhodium-free platinum group metal comprising platinum, wherein the electrically heatable element is disposed upstream from the catalysed second honeycomb substrate and wherein both the electrically heatable element and the catalysed second honeycomb substrate are disposed downstream from the first honeycomb substrate; a third emissions control device, which is a third honeycomb substrate comprising an ammonia-selective catalytic reduction catalyst disposed downstream from the second emissions control device; and one or more tempera
    Type: Grant
    Filed: September 22, 2023
    Date of Patent: October 29, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: David Bergeal, Andrew Chiffey, Daniel Hatcher, Francois Moreau, Paul Phillips
  • Patent number: 12128392
    Abstract: A catalyst gauze and gauze pack comprise a knitted catalyst gauze containing a first layer of a first wire material, wherein the first wire material is made from a platinum-rhodium alloy, and wherein the first layer contains an activator in the form of a second wire material which is knitted among the first wire material, and which is made from un-alloyed platinum.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: October 29, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Asgar Mohamed Hussein Alibhai, Helen Theresa Goddin
  • Patent number: 12064727
    Abstract: A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Jr and Pt.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: August 20, 2024
    Assignee: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Paul Joseph Andersen, John Leonello Casci, Hai-Ying Chen, Jillian Elaine Collier, Joseph Michael Fedeyko, Rodney Kok Shin Foo, Raj Rao Rajaram
  • Patent number: 12065393
    Abstract: The present invention relates to improvements in known gold containing catalysts. In particular, the present invention relates to improving the stability and/or inhibition of deactivation of gold containing catalysts via the addition of an inorganic oxide, hydroxide, oxo-salt or oxo-acid. There is also disclosed a method for preparing said catalyst most suitably via an impregnation method. Such catalysts are useful in the production of vinyl chloride monomer.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: August 20, 2024
    Assignee: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Nicholas Carthey, Peter Johnston
  • Patent number: 12042781
    Abstract: Provided is a composition comprising a ceria-zirconia mixed oxide, the ceria-zirconia mixed oxide being surface-modified with a perovskite type compound of formula (I); wherein formula (I) is defined by Ax-yA?yB1-zB?zO3; where: A is an ion of a metal selected from the group consisting of Li, Na, K, Cs, Mg, Sr, Ba, Ca, Y, La, Ce, Pr, Nd, and Gd; A? is an ion of a metal selected from the group consisting of Li, Na, K, Cs, Mg, Sr, Ba, Ca, Y, La, Ce, Pr, Nd, and Gd; B is an ion of a metal selected from the group consisting of Cu, Mn, Mo, Co, Fe, Ni, Cr, Ti, Zr, Al, Ga, Sc, Nb, V, W, Bi, Zn, Sn, Pt, Rh, Pd, Ru, Au, Ag, and Ir; B? is an ion of a metal selected from the group consisting of Cu, Mn, Mo, Co, Fe, Ni, Cr, Ti, Zr, Al, Ga, Sc, Nb, V, W, Bi, Zn, Sn, Pt, Rh, Pd, Ru, Au, Ag, and Ir; x is from 0.7 to 1; y is from 0 to 0.5; and z is from 0 to 0.5.
    Type: Grant
    Filed: January 24, 2023
    Date of Patent: July 23, 2024
    Assignee: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Qinghe Zheng, Jing Lu, Michael Howard, Andrea Eva Pascui, Kerry Simmance, Janet Fisher
  • Patent number: 12042783
    Abstract: Provided is a composition comprising alumina, the alumina being surface-modified with a perovskite type compound of formula (I); wherein formula (I) is defined by Ax-yA?yB1-z B?zO3; where: A is an ion of a metal selected from the group consisting of Li, Na, K, Cs, Mg, Sr, Ba, Ca, Y, La, Ce, Pr, Nd, and Gd; A? is an ion of a metal selected from the group consisting of Li, Na, K, Cs, Mg, Sr, Ba, Ca, Y, La, Ce, Pr, Nd, and Gd; B is an ion of a metal selected from the group consisting of Cu, Mn, Mo, Co, Fe, Ni, Cr, Ti, Zr, Al, Ga, Sc, Nb, V, W, Bi, Zn, Sn, Pt, Rh, Pd, Ru, Au, Ag, and Ir; B? is an ion of a metal selected from the group consisting of Cu, Mn, Mo, Co, Fe, Ni, Cr, Ti, Zr, Al, Ga, Sc, Nb, V, W, Bi, Zn, Sn, Pt, Rh, Pd, Ru, Au, Ag, and Ir; x is from 0.7 to 1; y is from 0 to 0.5; and z is from 0 to 0.5.
    Type: Grant
    Filed: January 13, 2023
    Date of Patent: July 23, 2024
    Assignee: JOHNSON MATTHEY PUBLIC LIMITED COMPANY
    Inventors: Qinghe Zheng, Jing Lu, Michael Howard
  • Patent number: 12030042
    Abstract: Provided are a novel form of AFX zeolite, a novel synthesis technique for producing pure phase small pore zeolites, a novel synthesis method for producing a zeolite with an increased Al pair content, a catalyst comprising the AFX zeolite in combination with a metal, and methods of using the same.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: July 9, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Hai-Ying Chen, Joseph Fedeyko, Raul Lobo, Nicholas McNamara, Trong Pham
  • Patent number: 12025041
    Abstract: A close-coupled catalytic article, and its use in an exhaust system for internal combustion engines, is disclosed. The close-coupled catalytic article for the treatment of an exhaust gas comprising: an upstream substrate and a downstream substrate, wherein the upstream substrate is spaced apart from the downstream substrate, wherein the upstream substrate comprises a first three-way catalyst (TWC) composition and the downstream substrate comprises a second TWC composition, the first and second TWC compositions each comprising an oxygen storage component (OSC), wherein a loading of the OSC in the downstream substrate is greater than a loading of the OSC in the upstream substrate and is at least 2.2 g/in3.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: July 2, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Hai-Ying Chen, Eric Tyo
  • Patent number: 12024438
    Abstract: The present invention further provides a method of making an metal-loaded aluminosilicate zeolite having a maximum pore opening defined by eight tetrahedral atoms from pre-existing aluminosilicate zeolite crystallites, wherein the metal is present in a range of from 0.5 to 5.0 wt. % based on the total weight of the metal-loaded aluminosilicate zeolite.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: July 2, 2024
    Assignees: Johnson Matthey Public Limited Company, Johnson Matthey Catalysts (Germany) GmbH
    Inventors: Juergen Bauer, John Leonello Casci, Ralf Dotzel, Joerg Muench, Ralitsa Purova, Wilhelm Schwieger, Ameen Shahid, Selvam Thangaraj, Tobias Weissenberger
  • Patent number: 12011690
    Abstract: An exhaust system for the treatment of an exhaust gas comprising a species to be treated, the system comprising: a first gas inlet for providing a flow of exhaust gas; a second gas inlet for providing a flow of heated gas; a plurality of sorbent beds for releasably storing the species; one or more catalysts for decomposing the species; first and second exhaust gas outlets; and a valve system configured to establish independently for each sorbent bed fluid communication in a first or second configuration, wherein: i) in the first configuration the flow of the exhaust gas from the first gas inlet contacts a sorbent bed for storing the species and then passes to the first gas outlet; and ii) in the second configuration the flow of heated gas from the second gas inlet contacts a sorbent bed for releasing the species, passes to one of the one or more catalysts and then passes to the second exhaust gas outlet; wherein the valve system is configured to ensure that at least one sorbent bed is in the first configurati
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: June 18, 2024
    Assignees: JOHNSON MATTHEY PUBLIC LIMITED COMPANY, JOHNSON MATTHEY CATALYSTS (GERMANY) GMBH
    Inventors: Joseph Fedeyko, Anthony Ferraro, Kenneth Koehler, Dirk Reichert, Harald Scherbel, Harald Schreiber, Andrew Scullard, Thomas Yeh
  • Patent number: 12011705
    Abstract: The present invention relates to a method of preparing a catalyst article comprising steps: (a) preparing a washcoat composition by combining at least the following components: a support material comprising a mixed oxide, a mixture of oxides or a molecular sieve comprising (i) alumina and (ii) silica and/or zirconia; a metal oxide sol comprising at least one of titania, silica or zirconia; a liquid medium; (b) applying the washcoat composition to a substrate to form a washcoating; and (c) drying and/or calcining the washcoating; wherein the method further comprises a step of impregnating the support material with a platinum group metal component. The prepared catalyst article may be suitable for the treatment of emissions from an internal combustion engine or a gas turbine, for example, the treatment of carbon monoxide and/or formaldehyde emissions from a natural gas fueled internal combustion engine or gas turbine.
    Type: Grant
    Filed: January 7, 2022
    Date of Patent: June 18, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventor: Kevin Doura
  • Patent number: 11986802
    Abstract: A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; and a first catalytic region on the substrate; wherein the first catalytic region comprises a first PGM component and a first alumina, wherein the first alumina is doped with a first dopant of at least 5 wt. %, and wherein the first dopant is selected from the group consisting of Zr, Ta, Mo, W, Ti, Nb, and a combination thereof.
    Type: Grant
    Filed: August 26, 2022
    Date of Patent: May 21, 2024
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Shuhei Nagaoka, Xiaorui Zhang