Patents by Inventor Gaurav Mediratta

Gaurav Mediratta 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).

  • Publication number: 20180251634
    Abstract: A composition comprises, based on the total weight of the composition, 25 wt % to 50 wt % of a polyetherimide; and 50 wt % to 75 wt % of a polyphthalamide; wherein the composition has a number of drops to tracking at 250 volts of greater than or equal to 50 drops determined according to ASTM D-3638-85.
    Type: Application
    Filed: February 22, 2016
    Publication date: September 6, 2018
    Inventors: Kapil Chandrakant Sheth, Hariharan Ramalingam, Gaurav Mediratta
  • Patent number: 10005884
    Abstract: Methods for synthesizing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds are provided. The method includes heating a reaction mixture including a phenolphthalein, a primary aryl amine, and an acid catalyst to form a phthalimidine; precipitating the phthalimidine from the reaction mixture to provide a crude phthalimidine; providing a solution including the crude phthalimidine, an additive, and at least one solvent; contacting the solution with one or more purification agents to provide a treated solution; precipitating and recovering a phthalimidine adduct from the treated solution; and recovering a purified phthalimidine compound from the adduct.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: June 26, 2018
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Anup Krishnnan Appukuttan Pillai, Shivakumar Konda, Gaurav Mediratta, Venkata Rama Narayanan Ganapathy Bhotla, Salkod Parameshwar Mallika, Pradeep Jeevaji Nadkarni
  • Publication number: 20180044522
    Abstract: A composition comprises, based on the total weight of the composition, 45 wt % to 75 wt % of a polyetherimide; and 20 wt % to 45 wt % of talc; and 5 wt % to 15 wt % of a fluorinated polymer; wherein the composition has a number of drops to tracking at 250 volts of greater than or equal to 50 drops according to ASTM D-3638-85.
    Type: Application
    Filed: February 22, 2016
    Publication date: February 15, 2018
    Inventors: Kapil Chandrakant SHETH, Hariharan RAMALINGAM, Gaurav MEDIRATTA
  • Publication number: 20180044521
    Abstract: A composition comprises, based on the total weight of the composition, 40 to 80 wt % of a polyetherimide; 10 to 50 wt % of talc; and 1 to 15 wt % of a polymer additive comprising a polyphthalamide, a poly(siloxane-etherimide) copolymer, aliphatic polyamide, or a combination comprising at least one of the foregoing; wherein the composition has a number of drops to tracking at 250 volts of greater than or equal to 50 drops determined according to ASTM D-3638-85.
    Type: Application
    Filed: February 22, 2016
    Publication date: February 15, 2018
    Inventors: Kapil Chandrakant Sheth, Hariharan Ramalingam, Gaurav Mediratta
  • Publication number: 20170029562
    Abstract: Methods for synthesizing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds are provided. The method includes heating a reaction mixture including a phenolphthalein, a primary aryl amine, and an acid catalyst to form a phthalimidine; precipitating the phthalimidine from the reaction mixture to provide a crude phthalimidine; providing a solution including the crude phthalimidine, an additive, and at least one solvent; contacting the solution with one or more purification agents to provide a treated solution; precipitating and recovering a phthalimidine adduct from the treated solution; and recovering a purified phthalimidine compound from the adduct.
    Type: Application
    Filed: April 22, 2015
    Publication date: February 2, 2017
    Inventors: Anup Krishnnan Appukuttan Pillai, Shivakumar Konda, Gaurav Mediratta, Venkata Rama Narayanan Ganapathy Bhotla, Salkod Parameshwar Mallika, Pradeep Jeevaji Nadkarni
  • Patent number: 9062196
    Abstract: Disclosed herein is a polymer blend comprising a first polycarbonate comprising a first structural unit derived from a 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine and a second structural unit derived from a dihydroxy aromatic compound, wherein the second structural unit is not identical to the first structural unit, and a second polycarbonate comprising a structural unit derived from a dihydroxy aromatic compound, wherein the polymer blend has a glass transition temperature of 155 to 200° C.; and wherein a test auricle having a thickness of 3.2 mm and molded from the blend has a haze of less than or equal to 3.0 measured in accordance with ASTM D1003-00. A method of making the polymer blend, and articles prepared from the blend, are also disclosed.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: June 23, 2015
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Gautam Chatterjee, Gheorghe Cojocariu, Chandrashekhar Lingannaiah, Gaurav Mediratta, Shantaram Suryakant Morye, Gary Francis Smith, Veeraraghavan Srinivasan
  • Patent number: 7893141
    Abstract: Novel polyester composition comprising a polyester, wherein said polyester comprises structural units derived from substituted or unsubstituted diacid or diester, a substituted or unsubstituted diol; a phosphorus containing compound and at least one selected from a stabilizer and an organic compound comprising at least one functional group is been disclosed. In addition methods for the preparation of the polyester composition and articles derived from said composition is disclosed.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: February 22, 2011
    Assignee: SABIC Innovative Plastics IP B.V.
    Inventors: Gerrit De Wit, Gaurav Mediratta
  • Publication number: 20090088504
    Abstract: Disclosed herein is a polymer blend comprising a first polycarbonate comprising a first structural unit derived from a 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine and a second structural unit derived from a dihydroxy aromatic compound, wherein the second structural unit is not identical to the first structural unit, and a second polycarbonate comprising a structural unit derived from a dihydroxy aromatic compound, wherein the polymer blend has a glass transition temperature of 155 to 200° C.; and wherein a test auricle having a thickness of 3.2 mm and molded from the blend has a haze of less than or equal to 3.0 measured in accordance with ASTM D1003-00. A method of making the polymer blend, and articles prepared from the blend, are also disclosed.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Inventors: Gautam Chatterjee, Gheorghe Cojocariu, Chandrashekhar Lingannaiah, Gaurav Mediratta, Shantaram Suryakant Morye, Gary Francis Smith, Veeraraghavan Srinivasan
  • Publication number: 20080125518
    Abstract: A polyester resin composition comprising structural units derived from (i) a polyester having end groups and at least about 20 percent of acid end groups relative to a total number of the end groups;” and (ii) at least one bis epoxy compound having two epoxy groups, and wherein the bis epoxy compound does not have an ester or carbonate groups; and, wherein the polyester has a gel content in a range from about 0 to about 10 percent is disclosed. Also disclosed is a process to prepare these compositions and articles therefrom.
    Type: Application
    Filed: November 28, 2006
    Publication date: May 29, 2008
    Inventors: Gaurav Mediratta, Govind Subbanna Wagle
  • Publication number: 20080125567
    Abstract: A composition of matter comprising an acid terminated polyester composition containing: (a) a polyester derived from at least one diol selected from the group consisting of ethylene glycol; propylene glycol, butanediol, xylene glycol, and a first diacid component; and (b) a second diacid component; and wherein the composition contains a residual of the second diacid component that is at least less than about 1000 parts per million is disclosed. Also disclosed is a process to prepare these compositions and articles therefrom.
    Type: Application
    Filed: November 28, 2006
    Publication date: May 29, 2008
    Inventors: Deepak Ramaraju, Gomatam Raghavan Ravi, Gaurav Mediratta, Govind Subbanna Wagle
  • Publication number: 20070197696
    Abstract: A flame retardant resin composition comprising a polyester; wherein the polyester comprises from about 1 to about 15 mole percent of an unsaturated diol; a flame retardant compound, an organic compound comprising of at least one carboxyl reactive group. The composition possesses good stability and mechanical property. Also disclosed is a process to prepare these compositions and articles therefrom.
    Type: Application
    Filed: February 21, 2006
    Publication date: August 23, 2007
    Inventors: Gaurav Mediratta, Subodh Pal, Reema Sinha, Deepak Ramaraju, Gomatam Ravi
  • Publication number: 20070173572
    Abstract: A flame retardant resin composition comprising a polyester, a flame retardant compound, wherein said flame retardant compound comprises at least one P—H bond; an organic compound wherein said organic compound comprises of at least one carboxyl reactive group; and a phosphine suppressing additive compound. The composition possesses good stability and mechanical property. Also disclosed is a process to prepare these compositions and articles therefrom.
    Type: Application
    Filed: January 20, 2006
    Publication date: July 26, 2007
    Inventors: Gaurav Mediratta, Subodh Pal, Reema Sinha, Srinivason Krishnaswami, Gomatam Ravi, Chris Weele, Rama Konduri, Kenneth Miller
  • Publication number: 20060074155
    Abstract: Novel polyester composition comprising a polyester, wherein said polyester comprises structural units derived from substituted or unsubstituted diacid or diester, a substituted or unsubstituted diol; a phosphorus containing compound and at least one selected from a stabilizer and an organic compound comprising at least one functional group is been disclosed. In addition methods for the preparation of the polyester composition and articles derived from said composition is disclosed.
    Type: Application
    Filed: September 30, 2004
    Publication date: April 6, 2006
    Inventors: Gerrit Wit, Gaurav Mediratta
  • Patent number: 6822025
    Abstract: A flame retardant thermoplastic resin composition comprises a thermoplastic resin comprising a polyphenylene ether resin, a high impact polystyrene resin or an acrylontrile-butadiene-styrene resin; an organo phosphate compound in an amount less than or equal to about 20 parts by weight for every 100 parts by weight of the thermoplastic resin; and a polyhydric alcohol compound in an amount of about 0.5 to about 5.0 parts for every 100 parts by weight of the thermoplastic resin. A method for the manufacture of the thermoplastic resin composition is also disclosed. The thermoplastic resin composition exhibits high flow characteristics and improved impact strength while providing effective flame retardance.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: November 23, 2004
    Assignee: General Electric Company
    Inventors: Chandra S. Bajgur, Sumi dummyname, Gaurav Mediratta, Radhakrishna Arakali
  • Publication number: 20040102549
    Abstract: A flame retardant thermoplastic resin composition comprises a thermoplastic resin comprising a polyphenylene ether resin, a high impact polstyrene resin or an acrylonitrile-butadiene-styrene resin; an organo phosphate compound in an amount less than or equal to about 20 parts by weight for every 100 parts by weight of the thermoplastic resin; and a polyhydric alcohol compound in an amount of about 0.5 to about 5.0 parts for every 100 parts by weight of the thermoplastic resin. A method for the manufacture of the thermoplastic resin composition is also disclosed. The thermoplastic resin composition exhibits high flow characteristics and improved impact strength while providing effective flame retardance.
    Type: Application
    Filed: November 27, 2002
    Publication date: May 27, 2004
    Applicant: General Electric Company
    Inventors: Chandra S. Bajgur, Sumi, Gaurav Mediratta, Radhakrishna Arakali