Patents by Inventor Pramod Kandanarachchi

Pramod Kandanarachchi 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: 9952507
    Abstract: Embodiments in accordance with the present invention encompass self-imageable polymer compositions containing a variety of photobase generators which are useful for forming films that can be patterned to create structures for microelectronic devices, microelectronic packaging, microelectromechanical systems, optoelectronic devices and displays. The compositions of this invention can be tailored to form positive tone or negative tone images depending upon the intended application in aqueous developable medium. The images formed therefrom exhibit improved properties including low wafer stress and better thermo-mechanical properties, among other property enhancements.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: April 24, 2018
    Assignee: PROMERUS, LLC
    Inventors: Pramod Kandanarachchi, Larry Rhodes, Hendra Ng, Wei Zhang, Brian Knapp
  • Patent number: 9944730
    Abstract: Embodiments encompassing a series of compositions containing polymers of norbornadiene and maleic anhydride monomers which are useful in forming a variety of photopatternable structures are disclosed and claimed. The compositions are useful as permanent dielectric materials. More specifically, embodiments encompassing compositions containing a series of ter- and tetrapolymers of a variety of norbornadiene, maleic anhydride, maleimide and norbornene-type cycloolefinic monomers in which maleic anhydride is fully or partially hydrolyzed (i.e., ring opened and fully or partially esterified), and a photoactive compound are disclosed, which are useful in forming permanent dielectric materials having utility in a variety of electronic material applications, among various other uses.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: April 17, 2018
    Assignee: PROMERUS, LLC
    Inventors: Larry F Rhodes, Pramod Kandanarachchi
  • Publication number: 20180044449
    Abstract: Embodiments encompassing a series of compositions containing polymers of norbornadiene and maleic anhydride monomers which are useful in forming a variety of photopatternable structures are disclosed and claimed. The compositions are useful as permanent dielectric materials. More specifically, embodiments encompassing compositions containing a series of ter- and tetrapolymers of a variety of norbornadiene, maleic anhydride, maleimide and norbornene-type cycloolefinic monomers in which maleic anhydride is fully or partially hydrolyzed (i.e., ring opened and fully or partially esterified), and a photoactive compound are disclosed, which are useful in forming permanent dielectric materials having utility in a variety of electronic material applications, among various other uses.
    Type: Application
    Filed: October 12, 2017
    Publication date: February 15, 2018
    Applicant: PROMERUS, LLC
    Inventors: LARRY F. RHODES, PRAMOD KANDANARACHCHI
  • Patent number: 9834627
    Abstract: Embodiments encompassing a series of compositions containing polymers of norbornadiene and maleic anhydride monomers which are useful in forming a variety of photopatternable structures are disclosed and claimed. The compositions are useful as permanent dielectric materials. More specifically, embodiments encompassing compositions containing a series of ter- and tetrapolymers of a variety of norbornadiene, maleic anhydride, maleimide and norbornene-type cycloolefinic monomers in which maleic anhydride is fully or partially hydrolyzed (i.e., ring opened and fully or partially esterified), and a photoactive compound are disclosed, which are useful in forming permanent dielectric materials having utility in a variety of electronic material applications, among various other uses.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: December 5, 2017
    Assignee: PROMERUS, LLC
    Inventors: Larry F Rhodes, Pramod Kandanarachchi
  • Publication number: 20170190810
    Abstract: Embodiments encompassing a series of compositions containing polymers of norbornadiene and maleic anhydride monomers which are useful in forming a variety of photopatternable structures are disclosed and claimed. The compositions are useful as permanent dielectric materials. More specifically, embodiments encompassing compositions containing a series of ter- and tetrapolymers of a variety of norbornadiene, maleic anhydride, maleimide and norbornene-type cycloolefinic monomers in which maleic anhydride is fully or partially hydrolyzed (i.e., ring opened and fully or partially esterified), and a photoactive compound are disclosed, which are useful in forming permanent dielectric materials having utility in a variety of electronic material applications, among various other uses.
    Type: Application
    Filed: December 30, 2016
    Publication date: July 6, 2017
    Applicant: PROMERUS, LLC
    Inventors: LARRY F RHODES, PRAMOD KANDANARACHCHI
  • Publication number: 20170153546
    Abstract: Embodiments encompassing a series of compositions containing photoacid generator (PAG) and a base are disclosed and claimed. The compositions are useful as permanent dielectric materials. More specifically, embodiments encompassing compositions containing a series of copolymers of a variety of norbornene-type cycloolefinic monomers and maleic anhydride in which maleic anhydride is fully or partially hydrolyzed (i.e., ring opened and fully or partially esterified), PAG and a base, which are useful in forming permanent dielectric materials having utility in a variety of electronic material applications, among various other uses, are disclosed.
    Type: Application
    Filed: November 30, 2016
    Publication date: June 1, 2017
    Applicant: PROMERUS, LLC
    Inventor: PRAMOD KANDANARACHCHI
  • Patent number: 9647222
    Abstract: Embodiments in accordance with the present invention provide for the use of polycycloolefins in electronic devices and more specifically to the use of such polycycloolefins as gate insulator layers used in the fabrication of electronic devices, the electronic devices that encompass such polycycloolefin gate insulator and processes for preparing such polycycloolefin gate insulator layers and electronic devices encompassing such layers.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: May 9, 2017
    Assignees: Merck Patent GmbH, Promerus LLC
    Inventors: David Christoph Müller, Toby Cull, Pawel Miskiewicz, Miguel Carrasco-Orozco, Andrew Bell, Edmund Elce, Larry F. Rhodes, Kazuyoshi Fujita, Hendra Ng, Pramod Kandanarachchi, Steven Smith
  • Patent number: 9647213
    Abstract: Embodiments in accordance with the present invention provide for the use of polycycloolefins in electronic devices and more specifically to the use of such polycycloolefins as interlayers applied to fluoropolymer layers used in the fabrication of electronic devices, the electronic devices that encompass such polycycloolefin interlayers and processes for preparing such polycycloolefin interlayers and electronic devices.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: May 9, 2017
    Assignees: Merck Patent GmbH, Promerus LLC
    Inventors: David Christoph Müller, Pawel Miskiewicz, Toby Cull, Piotr Wierzchowiec, Andrew Bell, Edmund Elce, Larry F. Rhodes, Kazuyoshi Fujita, Hendra Ng, Pramod Kandanarachchi, Steven Smith
  • Patent number: 9583713
    Abstract: Embodiments in accordance with the present invention provide for the use of polycycloolefins in electronic devices and more specifically to the use of such polycycloolefins as interlayers applied to fluoropolymer layers used in the fabrication of electronic devices, the electronic devices that encompass such polycycloolefin interlayers and processes for preparing such polycycloolefin interlayers and electronic devices.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: February 28, 2017
    Assignees: Merck Patent GmbH, Promerus LLC
    Inventors: David Christoph Mueller, Pawel Miskiewicz, Toby Cull, Piotr Wierzchowiec, Andrew Bell, Edmund Elce, Larry F. Rhodes, Kazuyoshi Fujita, Hendra Ng, Pramod Kandanarachchi, Steven Smith
  • Patent number: 9527943
    Abstract: There is provided a polymer including a structural unit represented by the following Formula (1a), a structural unit represented by the following Formula (1b) and a structural unit represented by the following Formula (1c) (In Formula (1a), n represents 0, 1 or 2. Each of R1, R2, R3 and R4 independently represents a hydrogen atom or an organic group having 1 to 10 carbon atoms. In Formula (1c), R5 represents an organic group having 1 to 10 carbon atoms.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: December 27, 2016
    Assignees: SUMITOMO BAKELITE CO., LTD., PROMERUS, LLC
    Inventors: Osamu Onishi, Haruo Ikeda, Larry F. Rhodes, Pramod Kandanarachchi, Hugh Burgoon
  • Patent number: 9422376
    Abstract: Disclosed herein are various amine treated maleic anhydride containing polymers and compositions thereof, which are useful for forming self-imageable films. In some embodiments, such polymers encompass norbornene-type repeating units and maleic anhydride-type repeating units where at least some of such maleic anhydride-type repeating units are either ring-opened or have been transformed into maleimide repeat units. The films formed from such copolymer compositions provide self imageable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: August 23, 2016
    Assignee: SUMITOMO BAKELITE CO., LTD.
    Inventors: Pramod Kandanarachchi, Larry F. Rhodes, Osamu Onishi
  • Publication number: 20160238932
    Abstract: Embodiments in accordance with the present invention encompass self-imageable polymer compositions containing a variety of photobase generators which are useful for forming films that can be patterned to create structures for microelectronic devices, microelectronic packaging, microelectromechanical systems, optoelectronic devices and displays. The compositions of this invention can be tailored to form positive tone or negative tone images depending upon the intended application in aqueous developable medium. The images formed therefrom exhibit improved properties including low wafer stress and better thermo-mechanical properties, among other property enhancements.
    Type: Application
    Filed: February 12, 2016
    Publication date: August 18, 2016
    Inventors: PRAMOD KANDANARACHCHI, LARRY RHODES, HENDRA NG, WEI ZHANG, BRIAN KNAPP
  • Patent number: 9366956
    Abstract: Copolymers and compositions thereof useful for forming self-imageable films encompassing such copolymers are disclosed. Such copolymers encompass norbornene-type repeating units and maleic anhydride-type repeating units where at least some of such and maleic anhydride-type repeating units have been ring-opened. The films formed from such copolymer compositions provide self imageable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: June 14, 2016
    Assignees: PROMERUS, LLC, SUMITOMO BAKELITE CO., LTD.
    Inventors: Osamu Onishi, Haruo Ikeda, Nobuo Tagashira, Larry F Rhodes, Pramod Kandanarachchi
  • Patent number: 9291901
    Abstract: Disclosed herein are various amine treated maleic anhydride containing polymers and compositions thereof, which are useful for forming self-imageable films. In some embodiments, such polymers encompass norbornene-type repeating units containing pendent silyl groups and maleic anhydride-type repeating units where at least some of such maleic anhydride-type repeating units are either ring-opened or have been transformed into maleimide repeat units. The films formed from such copolymer compositions provide self imageable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: March 22, 2016
    Assignee: SUMITOMO BAKELITE CO., LTD.
    Inventors: Pramod Kandanarachchi, Larry F. Rhodes
  • Patent number: 9261782
    Abstract: Various cycloolefinic/maleic anhydride polymers containing maleimide pendant groups and compositions thereof useful for forming self-imageable films encompassing such copolymers are disclosed. Such polymers encompass norbornene-type repeating units containing maleimide groups and maleic anhydride-type repeating units where at least some of such maleic anhydride-type repeating units have been ring-opened. The films formed from such copolymer compositions provide self imageable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: February 16, 2016
    Assignee: PROMERUS, LLC
    Inventors: Pramod Kandanarachchi, Larry F. Rhodes
  • Publication number: 20150372246
    Abstract: Embodiments in accordance with the present invention provide for the use of polycycloolefins in electronic devices and more specifically to the use of such polycycloolefins as gate insulator layers used in the fabrication of electronic devices, the electronic devices that encompass such polycycloolefin gate insulator and processes for preparing such polycycloolefin gate insulator layers and electronic devices encompassing such layers.
    Type: Application
    Filed: August 11, 2015
    Publication date: December 24, 2015
    Inventors: David Christoph Müller, Toby Cull, Pawel Miskiewicz, Miguel Carrasco-Orozco, Andrew Bell, Edmund Elce, Larry F. Rhodes, Kazuyoshi Fujita, Hendra Ng, Pramod Kandanarachchi, Steven Smith
  • Publication number: 20150349263
    Abstract: Embodiments in accordance with the present invention provide for the use of polycycloolefins in electronic devices and more specifically to the use of such polycycloolefins as interlayers applied to fluoropolymer layers used in the fabrication of electronic devices, the electronic devices that encompass such polycycloolefin interlayers and processes for preparing such polycycloolefin interlayers and electronic devices.
    Type: Application
    Filed: August 11, 2015
    Publication date: December 3, 2015
    Inventors: David Christoph Müller, Pawel Miskiewickz, Toby Cull, Piotr Wierzchowiec, Andrew Bell, Edmund Elce, Larry F. Rhodes, Kazuyoshi Fujita, Hendra Ng, Pramod Kandanarachchi, Steven Smith
  • Patent number: 9175123
    Abstract: Embodiments in accordance with the present invention provide for the use of polycycloolefins in electronic devices and more specifically to the use of such polycycloolefins as gate insulator layers used in the fabrication of electronic devices, the electronic devices that encompass such polycycloolefin gate insulator and processes for preparing such polycycloolefin gate insulator layers and electronic devices encompassing such layers.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: November 3, 2015
    Assignees: Merck Patent GmbH, Promerus LLC
    Inventors: David Christoph Mueller, Toby Cull, Pawel Miskiewicz, Miguel Carrasco-Orozco, Andrew Bell, Edmund Elce, Larry F. Rhodes, Kazuyoshi Fujita, Hendra Ng, Pramod Kandanarachchi, Steven Smith
  • Publication number: 20150252132
    Abstract: There is provided a polymer including a structural unit represented by the following Formula (1a), a structural unit represented by the following Formula (1b) and a structural unit represented by the following Formula (1c) (In Formula (1a), n represents 0, 1 or 2. Each of R1, R2, R3 and R4 independently represents a hydrogen atom or an organic group having 1 to 10 carbon atoms. In Formula (1c), R5 represents an organic group having 1 to 10 carbon atoms.
    Type: Application
    Filed: March 6, 2015
    Publication date: September 10, 2015
    Applicants: SUMITOMO BAKELITE CO., LTD., PROMERUS, LLC
    Inventors: Osamu Onishi, Haruo Ikeda, Larry F. Rhodes, Pramod Kandanarachchi, Hugh Burgoon
  • Publication number: 20150079506
    Abstract: Disclosed herein are various amine treated maleic anhydride containing polymers and compositions thereof, which are useful for forming self-imageable films. In some embodiments, such polymers encompass norbornene-type repeating units and maleic anhydride-type repeating units where at least some of such maleic anhydride-type repeating units are either ring-opened or have been transformed into maleimide repeat units. The films formed from such copolymer compositions provide self imageable, low-k, thermally stable layers for use in microelectronic and optoelectronic devices.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 19, 2015
    Applicants: SUMITOMO BAKELITE CO., LTD, PROMERUS, LLC
    Inventors: PRAMOD KANDANARACHCHI, LARRY F. RHODES, OSAMU ONISHI