Patents by Inventor Thangaraj Selvam

Thangaraj Selvam 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).

  • Patent number: 11571682
    Abstract: A SCR catalyst composition comprises a SCR catalyst; and a binder comprising a porous inorganic material, wherein the porous inorganic material comprises a disordered arrangement of delaminated layers, has a disordered porous structure, and has a multimodal pore size distribution comprising at least a first modal maximum having a macroporous or mesoporous pore size and a second modal maximum having a microporous pore size. The SCR catalyst composition can be manufactured using the method comprising the steps of: (i) providing an inorganic material having a layered structure; (ii) contacting the material with a cationic surfactant to form a swollen material; (iii) agitating the swollen material to form an agitated material; and (iv) calcining the agitated material to recover a delaminated inorganic material, wherein an SCR catalyst is mixed with the inorganic material prior to step (iv).
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: February 7, 2023
    Inventors: Jürgen Bauer, Ralf Dotzel, Jörg Werner Muench, Ralitsa Purova, Wilhelm Schwieger, Thangaraj Selvam, Ameen Shahid
  • Patent number: 11179707
    Abstract: A composite material comprises a macroporous silicate-based material at least partially substituted with at least one microporous zeolite, wherein the microporous zeolite is functionalised with either copper, iron or both copper and iron, and wherein the composite material is in the form of particles. The composite material can be obtained using a method comprising the steps of: (i) providing a mixture comprising a silicate-containing scaffold having a macroporous structure, an aluminium source and an organic template; (ii) hydrothermally treating the mixture to form a microporous zeolite-containing structure substantially retaining the macroporous structure of the silicate-containing scaffold; (iii) incorporating copper, iron or both copper and iron into the zeolite. The silicate-containing scaffold can be a diatomaceous earth.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: November 23, 2021
    Assignee: Johnson Matthey Catalysts (Germany) GmbH
    Inventors: Juergen Bauer, Ralf Dotzel, Joerg Werner Muench, Ralitsa Purova, Wilhelm Schwieger, Thangaraj Selvam, Ameen Shahid
  • Publication number: 20210094025
    Abstract: A composite material comprises a macroporous silicate-based material at least partially substituted with at least one microporous zeolite, wherein the microporous zeolite is functionalised with either copper, iron or both copper and iron, and wherein the composite material is in the form of particles. The composite material can be obtained using a method comprising the steps of: (i) providing a mixture comprising a silicate-containing scaffold having a macroporous structure, an aluminium source and an organic template; (ii) hydrothermally treating the mixture to form a microporous zeolite-containing structure substantially retaining the macroporous structure of the silicate-containing scaffold; (iii) incorporating copper, iron or both copper and iron into the zeolite. The silicate-containing scaffold can be a diatomaceous earth.
    Type: Application
    Filed: May 18, 2020
    Publication date: April 1, 2021
    Inventors: Juergen Bauer, Ralf Dotzel, Joerg Werner Muench, Ralitsa Purova, Wilhelm Schwieger, Thangaraj Selvam, Ameen Shahid
  • Publication number: 20210008524
    Abstract: A SCR catalyst composition comprises a SCR catalyst; and a binder comprising a porous inorganic material, wherein the porous inorganic material comprises a disordered arrangement of delaminated layers, has a disordered porous structure, and has a multimodal pore size distribution comprising at least a first modal maximum having a macroporous or mesoporous pore size and a second modal maximum having a microporous pore size. The SCR catalyst composition can be manufactured using the method comprising the steps of: (i) providing an inorganic material having a layered structure; (ii) contacting the material with a cationic surfactant to form a swollen material; (iii) agitating the swollen material to form an agitated material; and (iv) calcining the agitated material to recover a delaminated inorganic material, wherein an SCR catalyst is mixed with the inorganic material prior to step (iv).
    Type: Application
    Filed: August 10, 2020
    Publication date: January 14, 2021
    Inventors: Jürgen BAUER, Ralf DOTZEL, Joerg Werner MUENCH, Ralitsa PUROVA, Wilhelm SCHWIEGER, Thangaraj SELVAM, Ameen SHAHID
  • Patent number: 10828626
    Abstract: A composite material comprises a macroporous silicate-based material at least partially substituted with at least one microporous zeolite, wherein the microporous zeolite is functionalised with either copper, iron or both copper and iron, and wherein the composite material is in the form of particles. The composite material can be obtained using a method comprising the steps of: (i) providing a mixture comprising a silicate-containing scaffold having a macroporous structure, an aluminium source and an organic template; (ii) hydrothermally treating the mixture to form a microporous zeolite-containing structure substantially retaining the macroporous structure of the silicate-containing scaffold; (iii) incorporating copper, iron or both copper and iron into the zeolite. The silicate-containing scaffold can be a diatomaceous earth.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: November 10, 2020
    Assignee: Johnson Matthey Catalysts (Germany) GmbH
    Inventors: Juergen Bauer, Ralf Dotzel, Joerg Werner Muench, Ralitsa Purova, Wilhelm Schwieger, Thangaraj Selvam, Ameen Shahid
  • Publication number: 20200038850
    Abstract: A composite material comprises a macroporous silicate-based material at least partially substituted with at least one microporous zeolite, wherein the microporous zeolite is functionalised with either copper, iron or both copper and iron, and wherein the composite material is in the form of particles. The composite material can be obtained using a method comprising the steps of: (i) providing a mixture comprising a silicate-containing scaffold having a macroporous structure, an aluminium source and an organic template; (ii) hydrothermally treating the mixture to form a microporous zeolite-containing structure substantially retaining the macroporous structure of the silicate-containing scaffold; (iii) incorporating copper, iron or both copper and iron into the zeolite. The cate-containing scaffold can be a diatomaceous earth.
    Type: Application
    Filed: March 29, 2018
    Publication date: February 6, 2020
    Inventors: Juergen BAUER, Ralf DOTZEL, Joerg Werner MUENCH, Ralitsa PUROVA, Wilhelm SCHWIEGER, Thangaraj SELVAM, Ameen SHAHID
  • Publication number: 20180280937
    Abstract: A SCR catalyst composition comprises a SCR catalyst; and a binder comprising a porous inorganic material, wherein the porous inorganic material comprises a disordered arrangement of delaminated layers, has a disordered porous structure, and has a multimodal pore size distribution comprising at least a first modal maximum having a macroporous or mesoporous pore size and a second modal maximum having a microporous pore size. The SCR catalyst composition can be manufactured using the method comprising the steps of: (i) providing an inorganic material having a layered structure; (ii) contacting the material with a cationic surfactant to form a swollen material; (iii) agitating the swollen material to form an agitated material; and (iv) calcining the agitated material to recover a delaminated inorganic material, wherein an SCR catalyst is mixed with the inorganic material prior to step (iv).
    Type: Application
    Filed: March 28, 2018
    Publication date: October 4, 2018
    Inventors: Juergen BAUER, Ralf DOTZEL, Joerg Werner MUENCH, Ralitsa PUROVA, Wilhelm SCHWIEGER, Thangaraj SELVAM, Ameen SHAHID
  • Publication number: 20140256859
    Abstract: The invention relates to a wood material product and a method for producing wood material products from particles containing lignocellulose and adhesives containing formaldehydes, which are intermixed and fed to a forming process after mixing. A zeolite is added to the mixture of adhesives and particles containing lignocellulose.
    Type: Application
    Filed: May 22, 2014
    Publication date: September 11, 2014
    Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Jan Gunschera, Volker Thole, Doreen Markewitz, Katrin Bokelmann, Thangaraj Selvam, Annett Halbhuber
  • Patent number: 8822574
    Abstract: The invention relates to a wood material product and a method for producing wood material products from particles containing lignocellulose and adhesives containing formaldehydes, which are intermixed and fed to a forming process after mixing. A zeolite is added to the mixture of adhesives and particles containing lignocellulose.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: September 2, 2014
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Jan Gunschera, Volker Thole, Doreen Markewitz, Katrin Bokelmann, Thangaraj Selvam, Annett Halbhuber
  • Publication number: 20120108707
    Abstract: The invention relates to a wood material product and a method for producing wood material products from particles containing lignocellulose and adhesives containing formaldehydes, which are intermixed and fed to a forming process after mixing. A zeolite is added to the mixture of adhesives and particles containing lignocellulose.
    Type: Application
    Filed: April 30, 2010
    Publication date: May 3, 2012
    Inventors: Jan Gunschera, Volker Thole, Doreen Markewitz, Katrin Bokelmann, Thangaraj Selvam, Annett Halbhuber