Patents by Inventor Manatesh Chakraborty

Manatesh Chakraborty 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: 8703028
    Abstract: A method for compression molding of poly(arylene ether) powder comprises introducing a powder comprising unheated poly(arylene ether) powder to compaction equipment comprising a compression mold and subjecting the powder in the compression mold to a pressure sufficient to produce an article having a density greater than the unheated poly(arylene ether) powder wherein the pressure is applied at a temperature less than the glass transition temperature of the poly(arylene ether) powder.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: April 22, 2014
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Manatesh Chakraborty, Hua Guo, Lakshmikant S. Powale
  • Publication number: 20110198773
    Abstract: A method for compression molding of poly(arylene ether) powder comprises introducing a powder comprising unheated poly(arylene ether) powder to compaction equipment comprising a compression mold and subjecting the powder in the compression mold to a pressure sufficient to produce an article having a density greater than the unheated poly(arylene ether) powder wherein the pressure is applied at a temperature less than the glass transition temperature of the poly(arylene ether) powder.
    Type: Application
    Filed: April 28, 2011
    Publication date: August 18, 2011
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V.
    Inventors: Manatesh Chakraborty, Hua Guo, Lakshmikant S. Powale
  • Patent number: 7947204
    Abstract: A method for compression molding of poly(arylene ether) powder comprises introducing a powder comprising unheated poly(arylene ether) powder to compaction equipment comprising a compression mold and subjecting the powder in the compression mold to a pressure sufficient to produce an article having a density greater than the unheated poly(arylene ether) powder wherein the pressure is applied at a temperature less than the glass transition temperature of the poly(arylene ether) powder.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: May 24, 2011
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Manatesh Chakraborty, Hua Guo, Lakshmikant S. Powale
  • Patent number: 7608651
    Abstract: An article comprises a compatibilized poly(arylene ether)/polyamide blend, an optional electrically conductive filler, a phosphinate, and flame retardant augment selected from the group consisting of melamine polyphosphate, zinc borate, low melting glass, talc, and combinations of two or more of the foregoing flame retardant augments.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: October 27, 2009
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Pravin Borade, Manatesh Chakraborty, Anantharaman Dhanabalan, Roshan Kumar Jha, Jaykisor Pal
  • Patent number: 7435780
    Abstract: A method of making a resin composition comprises melt mixing a first polymer comprising a polyamide powder or a polyester powder with a fluoropolymer at a temperature below a softening temperature of the fluoropolymer to form a first melt blend; fibrillating the fluoropolymer in the first melt blend to form a fibrillar network in the first melt blend; and melt mixing the first melt blend having the fibrillar network with i) a poly(arylene ether) and a compatibilizing agent or ii) a poly(arylene ether) and a reaction product of the poly(arylene) and a compatibilizing agent.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: October 14, 2008
    Assignee: Sabic Innovavtive Plastics IP B.V.
    Inventors: Pravin Borade, Manatesh Chakraborty, Roshan Kumar Jha, Parnasree Maiti, Prochi Verma
  • Patent number: 7345116
    Abstract: An optically clear thermoplastic resin composition is disclosed which comprises structural units derived from substituted or unsubstituted polycarbonate and substituted or unsubstituted polyester, wherein said polyester comprises structural units derived from terephthalic acid and a mixture of 1,4-cyclohexane dimethanol and ethylene glycol, wherein said ethylene glycol is greater than about 60 mole percent based on total moles of 1,4-cyclohexane dimethanol and ethylene glycol. In addition the composition disclosed possess good environmental stress cracking resistance, flow and thermal properties.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: March 18, 2008
    Inventors: Abbas-Alli Ghudubhai Shaikh, Manatesh Chakraborty, Manickam Jayakannan, Ganesh Kannan, Vishvajit Chandrakant Juikar, Rajashekhar Shiddappa Totad
  • Publication number: 20070235697
    Abstract: A composition comprises a poly(arylene ether), a polyamide, electrically conductive carbon black, a fibrous filler, a first impact modifier and a second impact modifier.
    Type: Application
    Filed: April 5, 2006
    Publication date: October 11, 2007
    Applicant: General Electric Company
    Inventors: Pravin Borade, Manatesh Chakraborty, Parnasree Maiti
  • Publication number: 20070235698
    Abstract: A vehicular body part comprises a compatibilized poly(arylene ether)/polyamide blend, two impact modifiers, electrically conductive carbon black and fibrous filler.
    Type: Application
    Filed: April 5, 2006
    Publication date: October 11, 2007
    Applicant: General Electric Company
    Inventors: Pravin Borade, Manatesh Chakraborty, Parnasree Maiti
  • Publication number: 20070238832
    Abstract: A method of making a thermoplastic composition comprises melt blending a poly(arylene ether), a compatibilizer and a second impact modifier to form a first mixture. The second impact modifier comprises aryl alkylene units. The first mixture is melt blended with polyamide, electrically conductive carbon black. A first impact modifier and fibrous filler.
    Type: Application
    Filed: April 5, 2006
    Publication date: October 11, 2007
    Applicant: General Electric Company
    Inventors: Pravin Borade, Manatesh Chakraborty, Parnasree Maiti
  • Publication number: 20070123625
    Abstract: A method of making a resin composition comprises melt mixing a first polymer comprising a polyamide powder or a polyester powder with a fluoropolymer at a temperature below a softening temperature of the fluoropolymer to form a first melt blend; fibrillating the fluoropolymer in the first melt blend to form a fibrillar network in the first melt blend; and melt mixing the first melt blend having the fibrillar network with i) a poly(arylene ether) and a compatibilizing agent or ii) a poly(arylene ether) and a reaction product of the poly(arylene) and a compatibilizing agent.
    Type: Application
    Filed: November 29, 2005
    Publication date: May 31, 2007
    Inventors: Pravin Dorade, Manatesh Chakraborty, Roshan Jha, Parnasree Maiti, Prochi Verma
  • Publication number: 20070049690
    Abstract: Disclosed herein is a polymer composition comprising: a poly(arylene ether) resin; a polyester resin; two impact modifiers; and a polymeric compatibilizer.
    Type: Application
    Filed: August 29, 2005
    Publication date: March 1, 2007
    Inventors: Pravin Borade, Manatesh Chakraborty, Roshan Jha, Nisha Preschilla
  • Publication number: 20060247389
    Abstract: An optically clear thermoplastic resin composition is disclosed which comprises structural units derived from substituted or unsubstituted polycarbonate and substituted or unsubstituted polyester, wherein said polyester comprises structural units derived from terephthalic acid and a mixture of 1,4-cyclohexane dimethanol and ethylene glycol, wherein said ethylene glycol is greater than about 60 mole percent based on total moles of 1,4-cyclohexane dimethanol and ethylene glycol. In addition the composition disclosed possess good environmental stress cracking resistance, flow and thermal properties.
    Type: Application
    Filed: July 13, 2006
    Publication date: November 2, 2006
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Abbas-Alli Shaikh, Manatesh Chakraborty, Manickam Jayakannan, Ganesh Kannan, Vishvajit Juikar, Rajashekhar Totad
  • Publication number: 20060167143
    Abstract: A composition comprises a compatibilized poly(arylene ether)/polyamide blend, an optional electrically conductive filler, a phosphinate, and flame retardant augment selected from the group consisting of melamine polyphosphate, zinc borate, low melting glass, talc, and combinations of two or more of the foregoing flame retardant augments.
    Type: Application
    Filed: April 10, 2006
    Publication date: July 27, 2006
    Applicant: General Electric Company
    Inventors: Pravin Borade, Manatesh Chakraborty, Anantharaman Dhanabalan, Roshan Jha, Jaykisor Pal
  • Publication number: 20060167144
    Abstract: An article comprises a compatibilized poly(arylene ether)/polyamide blend, an optional electrically conductive filler, a phosphinate, and flame retardant augment selected from the group consisting of melamine polyphosphate, zinc borate, low melting glass, talc, and combinations of two or more of the foregoing flame retardant augments.
    Type: Application
    Filed: April 10, 2006
    Publication date: July 27, 2006
    Applicant: General Electric Company
    Inventors: Pravin Borade, Manatesh Chakraborty, Anantharaman Dhanabalan, Roshan Jha, Jaykisor Pal
  • Publication number: 20050230869
    Abstract: A method for compression molding of poly(arylene ether) powder comprises introducing a powder comprising unheated poly(arylene ether) powder to compaction equipment comprising a compression mold and subjecting the powder in the compression mold to a pressure sufficient to produce an article having a density greater than the unheated poly(arylene ether) powder wherein the pressure is applied at a temperature less than the glass transition temperature of the poly(arylene ether) powder.
    Type: Application
    Filed: April 16, 2004
    Publication date: October 20, 2005
    Inventors: Manatesh Chakraborty, Hua Guo, Lakshmikant Powale
  • Publication number: 20050137360
    Abstract: An optically clear thermoplastic resin composition is disclosed which comprises structural units derived from substituted or unsubstituted polycarbonate and substituted or unsubstituted polyester, wherein said polyester comprises structural units derived from terephthalic acid and a mixture of 1,4-cyclohexane dimethanol and ethylene glycol, wherein said ethylene glycol is greater than about 60 mole percent based on total moles of 1,4-cyclohexane dimethanol and ethylene glycol. In addition the composition disclosed possess good environmental stress cracking resistance, flow and thermal properties.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 23, 2005
    Inventors: Abbas-Alli Shaikh, Manatesh Chakraborty, Manickam Jayakannan, Ganesh Kannan, Vishvajit Juikar, Rajashekhar Totad