Patents by Inventor Govindasamy Paramasivam Rajendran

Govindasamy Paramasivam Rajendran 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: 11702804
    Abstract: A pelletized road marking composition includes a binder mixture, a filler mixture and bentonite clay. The binder mixture includes at least one alkyd ester, at least one wax, at least one ethylene copolymer, and at least one plasticizer. The filler mixture includes at least one coloring additive, reflective elements, and at least one inert inorganic filler. The components of the road marking composition are mixed and melted and processed into pellets. The bentonite clay added to the composition prevents the pellets from clumping when stored at elevated temperatures.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: July 18, 2023
    Assignee: Ennis-Flint, Inc.
    Inventors: Govindasamy Paramasivam Rajendran, Mark Terry, Jeffrey Lee Stricker
  • Publication number: 20220127433
    Abstract: A retroreflective optical element is provided in which modified glass beads having a high refractive index are embedded on the surface of a thermoplastic core. The glass beads are heated to a temperature near the softening point of the thermoplastic core and the heated beads and thermoplastic cores are mixed in a fluidized bed. The beads embed into the thermoplastic core and are also chemically bonded thereto through a silane coupling agent provided on the beads.
    Type: Application
    Filed: October 22, 2020
    Publication date: April 28, 2022
    Inventors: Govindasamy Paramasivam Rajendran, Jeffrey Lee Stricker
  • Publication number: 20200095739
    Abstract: A pelletized road marking composition includes a binder mixture, a filler mixture and bentonite clay. The binder mixture includes at least one alkyd ester, at least one wax, at least one ethylene copolymer, and at least one plasticizer. The filler mixture includes at least one coloring additive, reflective elements, and at least one inert inorganic filler. The components of the road marking composition are mixed and melted and processed into pellets. The bentonite clay added to the composition prevents the pellets from clumping when stored at elevated temperatures.
    Type: Application
    Filed: September 24, 2019
    Publication date: March 26, 2020
    Inventors: Govindasamy Paramasivam Rajendran, Mark Terry, Jeffrey Lee Stricker
  • Publication number: 20160362525
    Abstract: A masterbatch composition of elastomer and from 20 to 100 parts per hundred parts elastomer of fibrous micropulp wherein the micropulp has fibers with a volume weighted average fiber length of from 20 to 200 micrometers as measured by laser diffraction, a relative specific surface area of from 30 to 600 square meter per gram as measured by nuclear magnetic resonance and the fibers selected from the group consisting of aromatic polyamide, aromatic copolyamide, polyacrylonitrile and polyazole.
    Type: Application
    Filed: February 25, 2015
    Publication date: December 15, 2016
    Inventors: Mark F. Teasley, Jeffrey S. Downey, Govindasamy Paramasivam Rajendran
  • Patent number: 8784980
    Abstract: Provided is a film having a thickness of less than 500 ?m comprising a polymer and a plurality of surface-modified hexagonal boron nitride particles dispersed therewithin. The polymers can be polyimide or epoxy. A process for preparing the film by casting is provided.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: July 22, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Pui-Yan Lin, Govindasamy Paramasivam Rajendran, George Elias Zahr
  • Patent number: 8484839
    Abstract: Provided are processes for making multi-layer chip carriers comprising an asymmetric cross-linked polymeric dielectric film.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: July 16, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Pui-Yan Lin, Govindasamy Paramasivam Rajendran, George Elias Zahr
  • Patent number: 8455573
    Abstract: Disclosed are curable epoxy compositions comprising imidazolium monocarboxylate salts as curing catalysts and method for curing same. The imidazolium monocarboxylate salt is suitable for use as latent catalysts that effect curing upon heating to a curing temperature threshold. The curable compositions prepared therefrom are used to prepare coated substrates, and to produce conformally sealed printed wiring boards. Of particular utility are curable compositions comprising 2-ethyl-4-methyl imidazolium monocarboxylate salts.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: June 4, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventor: Govindasamy Paramasivam Rajendran
  • Patent number: 8440292
    Abstract: Provided is a multi-layer article comprising an electrically conductive metal layer adheringly contacting the surface of a polymeric composite film less than 500 ?m in thickness, having a surface, the polymeric composite film comprising a polymer and a plurality of surface-modified hexagonal boron nitride particles dispersed therewithin. A process of film casting onto a conductive metal layer is provided.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: May 14, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Kuppusamy Kanakarajan, Govindasamy Paramasivam Rajendran
  • Patent number: 8288466
    Abstract: Provided is a composite comprising a polymer and a plurality of surface-modified hexagonal boron nitride particles dispersed therewithin. Suitable polymers include polyimide and epoxy. A process is also provided. The surface modified hexagonal boron nitride particles comprise surface-bonded substituted phenyl radicals.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: October 16, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Pui-Yan Lin, Govindasamy Paramasivam Rajendran, George Elias Zahr
  • Patent number: 8258346
    Abstract: Provided is a composition comprising hexagonal boron nitride particles having a surface and a substituted phenyl radical bonded to the surface, the substituted phenyl radical being represented by the structure: where X is a radical selected from NH2—, HO—, R2OC(O)—, R2C(O)O—, HSO3—, NH2CO—, halogens, alkyl or aryl, including substituted aryl; where R1 is hydrogen, alkyl or alkoxy, and R2 is hydrogen, alkyl or aryl, including substituted aryl. A process for preparing the composition is also provided.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: September 4, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventor: Govindasamy Paramasivam Rajendran
  • Patent number: 8163381
    Abstract: Provided, are multi-layer chip carriers comprising an asymmetric cross-linked polymeric dielectric film, and processes for making the chip carriers.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: April 24, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Pui-Yan Lin, Govindasamy Paramasivam Rajendran, George Elias Zahr
  • Publication number: 20100292508
    Abstract: Provided is a composition comprising hexagonal boron nitride particles having a surface and a substituted phenyl radical bonded to the surface, the substituted phenyl radical being represented by the structure: where X is a radical selected from NH2—, HO—, R2OC(O)—, R2C(O)O—, HSO3—, NH2CO—, halogens, alkyl or aryl, including substituted aryl; where R1 is hydrogen, alkyl or alkoxy, and R2 is hydrogen, alkyl or aryl, including substituted aryl. A process for preparing the composition is also provided.
    Type: Application
    Filed: May 13, 2009
    Publication date: November 18, 2010
    Applicant: E. I. DU POND DE NEMOURS AND COMPANY
    Inventor: Govindasamy Paramasivam Rajendran
  • Publication number: 20100291371
    Abstract: Provided is a multi-layer article comprising an electrically conductive metal layer adheringly contacting the surface of a polymeric composite film less than 500 ?m in thickness, having a surface, the polymeric composite film comprising a polymer and a plurality of surface-modified hexagonal boron nitride particles dispersed therewithin. A process of film casting onto a conductive metal layer is provided.
    Type: Application
    Filed: May 13, 2009
    Publication date: November 18, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Kuppusamy Kanakarajan, Govindasamy Paramasivam Rajendran
  • Patent number: 7829188
    Abstract: Epoxy compositions exhibiting low viscosity in the uncured state and low coefficient of thermal expansion in the cured state are provided. Also provided are processes for making the epoxy compositions. The low dielectric constant compositions are well-suited for use in multi-layer printed circuit boards. The desired properties are achieved by employment of a bimodal distribution of nano-scale fillers in the epoxy compositions.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: November 9, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Pui-Yan Lin, Govindasamy Paramasivam Rajendran, George Elias Zahr
  • Publication number: 20100065314
    Abstract: Provided, are multi-layer chip carriers comprising an asymmetric cross-linked polymeric dielectric film, and processes for making the chip carriers.
    Type: Application
    Filed: October 23, 2008
    Publication date: March 18, 2010
    Applicant: E. I. DuPont de Nemours and Company
    Inventors: Pui-Yan Lin, Govindasamy Paramasivam Rajendran, George Elias Zahr
  • Patent number: 7658988
    Abstract: Compositions and processes for the preparation of printed circuits from epoxy compositions are provided. The epoxy compositions exhibit low viscosity in the uncured state and low coefficient of thermal expansion in the cured state. The low dielectric constant compositions of the invention are well-suited for use in multi-layer printed circuit boards.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: February 9, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Pui-Yan Lin, Govindasamy Paramasivam Rajendran, George Elias Zahr
  • Publication number: 20090110909
    Abstract: Cross-linked polymeric films suitable for use as a dielectric build-up layer in multi-layer chip carriers are provided. The films are suitable for use in any application using films that are dimensionally stable to temperature changes.
    Type: Application
    Filed: October 23, 2008
    Publication date: April 30, 2009
    Applicant: E. I. DuPont de Nemours and Company
    Inventors: Jeffrey Glenn Innocenzo, Pui-Yan Lin, Richard C. Oliver, Govindasamy Paramasivam Rajendran, George Elias Zahr
  • Publication number: 20070232727
    Abstract: Epoxy compositions exhibiting low viscosity in the uncured state and low coefficient of thermal expansion in the cured state are provided. Also provided are processes for making the epoxy compositions. The low dielectric constant compositions are well-suited for use in multi-layer printed circuit boards. The desired properties are achieved by employment of a bimodal distribution of nano-scale fillers in the epoxy compositions.
    Type: Application
    Filed: April 3, 2007
    Publication date: October 4, 2007
    Inventors: Pui-Yan Lin, Govindasamy Paramasivam Rajendran, George Elias Zahr
  • Publication number: 20070231469
    Abstract: Compositions and processes for the preparation of printed circuits from epoxy compositions are provided. The epoxy compositions exhibit low viscosity in the uncured state and low coefficient of thermal expansion in the cured state. The low dielectric constant compositions of the invention are well-suited for use in multi-layer printed circuit boards.
    Type: Application
    Filed: April 3, 2007
    Publication date: October 4, 2007
    Inventors: Pui-Yan Lin, Govindasamy Paramasivam Rajendran, George Elias Zahr
  • Patent number: 7265181
    Abstract: Provided according to the invention are cross-linked polymers comprising an anhydride or partially hydrolyzed anhydride functionalized polymer having oligomeric polyimide cross-links, providing a polymeric composite on a molecular scale, and shaped articles made therefrom. In some embodiments the shaped articles are particularly well suited for electronics applications. The shaped articles are characterized by low CTE (coefficient of thermal expansion), low dielectric constant (Dk), low dissipation factor (Df), high strength, high modulus and high toughness.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: September 4, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Pui-Yan Lin, George Elias Zahr, Govindasamy Paramasivam Rajendran