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).
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Patent number: 8703028Abstract: 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: GrantFiled: April 28, 2011Date of Patent: April 22, 2014Assignee: Sabic Innovative Plastics IP B.V.Inventors: Manatesh Chakraborty, Hua Guo, Lakshmikant S. Powale
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Publication number: 20110198773Abstract: 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: ApplicationFiled: April 28, 2011Publication date: August 18, 2011Applicant: SABIC INNOVATIVE PLASTICS IP B.V.Inventors: Manatesh Chakraborty, Hua Guo, Lakshmikant S. Powale
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Patent number: 7947204Abstract: 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: GrantFiled: April 16, 2004Date of Patent: May 24, 2011Assignee: Sabic Innovative Plastics IP B.V.Inventors: Manatesh Chakraborty, Hua Guo, Lakshmikant S. Powale
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Patent number: 7608651Abstract: 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: GrantFiled: April 10, 2006Date of Patent: October 27, 2009Assignee: Sabic Innovative Plastics IP B.V.Inventors: Pravin Borade, Manatesh Chakraborty, Anantharaman Dhanabalan, Roshan Kumar Jha, Jaykisor Pal
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Patent number: 7435780Abstract: 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: GrantFiled: November 29, 2005Date of Patent: October 14, 2008Assignee: Sabic Innovavtive Plastics IP B.V.Inventors: Pravin Borade, Manatesh Chakraborty, Roshan Kumar Jha, Parnasree Maiti, Prochi Verma
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Patent number: 7345116Abstract: 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: GrantFiled: July 13, 2006Date of Patent: March 18, 2008Inventors: Abbas-Alli Ghudubhai Shaikh, Manatesh Chakraborty, Manickam Jayakannan, Ganesh Kannan, Vishvajit Chandrakant Juikar, Rajashekhar Shiddappa Totad
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Publication number: 20070235697Abstract: 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: ApplicationFiled: April 5, 2006Publication date: October 11, 2007Applicant: General Electric CompanyInventors: Pravin Borade, Manatesh Chakraborty, Parnasree Maiti
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Publication number: 20070235698Abstract: A vehicular body part comprises a compatibilized poly(arylene ether)/polyamide blend, two impact modifiers, electrically conductive carbon black and fibrous filler.Type: ApplicationFiled: April 5, 2006Publication date: October 11, 2007Applicant: General Electric CompanyInventors: Pravin Borade, Manatesh Chakraborty, Parnasree Maiti
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Publication number: 20070238832Abstract: 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: ApplicationFiled: April 5, 2006Publication date: October 11, 2007Applicant: General Electric CompanyInventors: Pravin Borade, Manatesh Chakraborty, Parnasree Maiti
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Publication number: 20070123625Abstract: 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: ApplicationFiled: November 29, 2005Publication date: May 31, 2007Inventors: Pravin Dorade, Manatesh Chakraborty, Roshan Jha, Parnasree Maiti, Prochi Verma
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Publication number: 20070049690Abstract: Disclosed herein is a polymer composition comprising: a poly(arylene ether) resin; a polyester resin; two impact modifiers; and a polymeric compatibilizer.Type: ApplicationFiled: August 29, 2005Publication date: March 1, 2007Inventors: Pravin Borade, Manatesh Chakraborty, Roshan Jha, Nisha Preschilla
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Publication number: 20060247389Abstract: 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: ApplicationFiled: July 13, 2006Publication date: November 2, 2006Applicant: GENERAL ELECTRIC COMPANYInventors: Abbas-Alli Shaikh, Manatesh Chakraborty, Manickam Jayakannan, Ganesh Kannan, Vishvajit Juikar, Rajashekhar Totad
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Publication number: 20060167143Abstract: 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: ApplicationFiled: April 10, 2006Publication date: July 27, 2006Applicant: General Electric CompanyInventors: Pravin Borade, Manatesh Chakraborty, Anantharaman Dhanabalan, Roshan Jha, Jaykisor Pal
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Publication number: 20060167144Abstract: 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: ApplicationFiled: April 10, 2006Publication date: July 27, 2006Applicant: General Electric CompanyInventors: Pravin Borade, Manatesh Chakraborty, Anantharaman Dhanabalan, Roshan Jha, Jaykisor Pal
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Publication number: 20050230869Abstract: 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: ApplicationFiled: April 16, 2004Publication date: October 20, 2005Inventors: Manatesh Chakraborty, Hua Guo, Lakshmikant Powale
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Publication number: 20050137360Abstract: 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: ApplicationFiled: December 19, 2003Publication date: June 23, 2005Inventors: Abbas-Alli Shaikh, Manatesh Chakraborty, Manickam Jayakannan, Ganesh Kannan, Vishvajit Juikar, Rajashekhar Totad