Patents by Inventor Krishna Venkataswamy

Krishna Venkataswamy 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: 20230312898
    Abstract: A thermoplastic elastomer composition for overmolding a predominantly polyamide substrate, a method for the preparation of an overmolded article, and an overmolded article having a layer of thermoplastic elastomer is provided. The thermoplastic elastomer composition comprises a thermoplastic vulcanizate, an olefinic block copolymer, and a maleated functionalized polyolefin copolymer. The method for the preparation of the overmolded article comprises heating the thermoplastic elastomer composition followed by applying the heated composition to at least a portion of the predominantly polyamide substrate.
    Type: Application
    Filed: June 9, 2023
    Publication date: October 5, 2023
    Inventors: Prakash SANJEEVAIAH, Krishna VENKATASWAMY, Pei-Zhen JIAN
  • Patent number: 11713390
    Abstract: A thermoplastic elastomer composition for overmolding a predominantly polyamide substrate, a method for the preparation of an overmolded article, and an overmolded article having a layer of thermoplastic elastomer is provided. The thermoplastic elastomer composition comprises a thermoplastic vulcanizate, an olefinic block copolymer, and a maleated functionalized polyolefin copolymer. The method for the preparation of the overmolded article comprises heating the thermoplastic elastomer composition followed by applying the heated composition to at least a portion of the predominantly polyamide substrate.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: August 1, 2023
    Assignee: Star Thermoplastic Alloys & Rubbers, Inc.
    Inventors: Prakash Sanjeevaiah, Krishna Venkataswamy, Pei-Zhen Jian
  • Patent number: 11591468
    Abstract: A thermoplastic elastomer compound includes polyester-type thermoplastic polyurethane and no greater than about 30 weight percent of styrene-isobutylene-styrene block copolymer. The compound has good clarity, as exhibited by a haze of no greater than about 60%, or 50%, or 30%, according to ASTM D 1003. Additionally, the compound has good damping properties, as exhibited by a resilience or vertical rebound of less than about 25% according to ASTM D2632.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: February 28, 2023
    Assignee: Avient Corporation
    Inventors: Krishna Venkataswamy, Jiren Gu
  • Publication number: 20220089898
    Abstract: A thermoplastic elastomer composition for overmolding a plastic article or substrate, a method for the preparation of an overmolded article, and an overmolded article having a layer of thermoplastic elastomer is provided. The thermoplastic elastomer composition comprises a blend of hydrogenated styrene block copolymers and unsaturated styrene block copolymer. The method for the preparation of the overmolded article comprises applying a thermoplastic elastomer composition to at least a portion of the exterior surface of a rigid plastic substrate.
    Type: Application
    Filed: September 15, 2021
    Publication date: March 24, 2022
    Inventors: Prakash SANJEEVAIAH, Krishna VENKATASWAMY, Pei-Zhen JIAN
  • Patent number: 11187324
    Abstract: According to some embodiments, a multi-layer gasket with a non-compressible core, formed of any material that is relatively rigid and incompressible and can serve as a carrier for a gasket, and compressible layers, formed of any flowable or compressible sealing material with appropriate rheology for a particular sealing application, in the form of edge or surface coatings, is presented.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: November 30, 2021
    Assignee: Lydall Performance Materials (US), Inc.
    Inventors: Brian C. Lehr, Krishna Venkataswamy, Jeffery L. Barrall
  • Publication number: 20210198464
    Abstract: A thermoplastic elastomer composition for overmolding a predominantly polyamide substrate, a method for the preparation of an overmolded article, and an overmolded article having a layer of thermoplastic elastomer is provided. The thermoplastic elastomer composition comprises a thermoplastic vulcanizate, an olefinic block copolymer, and a maleated functionalized polyolefin copolymer. The method for the preparation of the overmolded article comprises heating the thermoplastic elastomer composition followed by applying the heated composition to at least a portion of the predominantly polyamide substrate.
    Type: Application
    Filed: December 23, 2020
    Publication date: July 1, 2021
    Inventors: Prakash SANJEEVAIAH, Krishna VENKATASWAMY
  • Patent number: 10814593
    Abstract: A thermoplastic elastomer compound includes hydrogenated styrenic block copolymer having a polyisoprene soft block, styrene-isobutylene-styrene block copolymer, tackifier having a softening point of at least about 80° C. according to ASTM 6493, and, optionally, one or more additional thermoplastic elastomers. The compound has a Compound Tan Delta Peak Temperature (at 10 Hz) of at least 10° C. and a Compound Tan Delta Peak Height (at 10 Hz) of at least 0.85 if no thermoplastic polyurethane is present and at least 0.60 if additional thermoplastic elastomer is present and includes thermoplastic polyurethane. The thermoplastic elastomer compound exhibits superior damping properties across a broad range of temperatures, including at or above room temperature, and across a broad range of vibrational frequencies. The compound in sheet form can be used as a layer in an article of a structure susceptible to forceful impact of any item.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: October 27, 2020
    Assignee: Avient Corporation
    Inventors: Russell Danielson, Jason D. Piunti, Zachary Muscato, Malar Shetty, Jiren Gu, Krishna Venkataswamy
  • Publication number: 20200207974
    Abstract: TPE compounds having at least 35 weight percent of bio-renewable content are disclosed as candidates for use as overmolding layers on to polypropylene substrates.
    Type: Application
    Filed: June 15, 2018
    Publication date: July 2, 2020
    Applicant: PolyOne Corporation
    Inventors: Liang XU, Krishna VENKATASWAMY
  • Publication number: 20200040182
    Abstract: A thermoplastic elastomer compound includes polyester-type thermoplastic polyurethane and no greater than about 30 weight percent of styrene-isobutylene-styrene block copolymer. The compound has good clarity, as exhibited by a haze of no greater than about 60%, or 50%, or 30%, according to ASTM D 1003. Additionally, the compound has good damping properties, as exhibited by a resilience or vertical rebound of less than about 25% according to ASTM D2632.
    Type: Application
    Filed: April 24, 2018
    Publication date: February 6, 2020
    Applicant: PolyOne Corporation
    Inventors: Krishna VENKATASWAMY, Jiren GU
  • Publication number: 20190376601
    Abstract: According to some embodiments, a multi-layer gasket with a non-compressible core, formed of any material that is relatively rigid and incompressible and can serve as a carrier for a gasket, and compressible layers, formed of any flowable or compressible sealing material with appropriate rheology for a particular sealing application, in the form of edge or surface coatings, is presented.
    Type: Application
    Filed: June 6, 2019
    Publication date: December 12, 2019
    Applicant: Lydall Performance Materials (US), Inc.
    Inventors: Brian C. Lehr, Krishna Venkataswamy, Jeffery L. Barrall
  • Publication number: 20190283368
    Abstract: A thermoplastic elastomer compound includes hydrogenated styrenic block copolymer having a polyisoprene soft block, styrene-isobutylene-styrene block copolymer, tackifier having a softening point of at least about 80° C. according to ASTM 6493, and, optionally, one or more additional thermoplastic elastomers. The compound has a Compound Tan Delta Peak Temperature (at 10 Hz) of at least 10° C. and a Compound Tan Delta Peak Height (at 10 Hz) of at least 0.85 if no thermoplastic polyurethane is present and at least 0.60 if additional thermoplastic elastomer is present and includes thermoplastic polyurethane. The thermoplastic elastomer compound exhibits superior damping properties across a broad range of temperatures, including at or above room temperature, and across a broad range of vibrational frequencies. The compound in sheet form can be used as a layer in an article of a structure susceptible to forceful impact of any item.
    Type: Application
    Filed: July 24, 2017
    Publication date: September 19, 2019
    Applicant: PolyOne Corporation
    Inventors: Russell DANIELSON, Jason D. PIUNTI, Zachary MUSCATO, Malar SHETTY, Jiren GU, Krishna VENKATASWAMY
  • Publication number: 20180215910
    Abstract: A thermoplastic elastomer compound includes hydrogenated styrenic block copolymer having a polyisoprene soft block, styrene-isobutylene-styrene block copolymer, tackifier having a softening point of at least about 80° C. according to ASTM 6493, and, optionally, one or more additional thermoplastic elastomers. The compound has a Compound Tan Delta Peak Temperature (at 10 Hz) of at least 10° C. and a Compound Tan Delta Peak Height (at 10 Hz) of at least 0.85 if no thermoplastic polyurethane is present and at least 0.60 if additional thermoplastic elastomer is present and includes thermoplastic polyurethane. The thermoplastic elastomer compound exhibits superior damping properties across a broad range of temperatures, including at or above room temperature, and across a broad range of vibrational frequencies.
    Type: Application
    Filed: February 10, 2016
    Publication date: August 2, 2018
    Applicant: PolyOne Corporation
    Inventors: Krishna VENKATASWAMY, Jiren GU
  • Patent number: 9249291
    Abstract: A thermoplastic elastomer compound is blended from styrenic block copolymer, thermoplastic vulcanizate, thermoplastic polyurethane, a compatibilizer, and a masterbatch containing silicone, which is added to provide a qualitative silky feel on surfaces of plastic articles made from the compound.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: February 2, 2016
    Assignee: PolyOne Corporation
    Inventors: Guoqiang Qian, Krishna Venkataswamy, Malar Shetty
  • Patent number: 8981003
    Abstract: A thermoplastic elastomer compound is disclosed having copolyester elastomer, epoxidized soybean oil, and vulcanized vegetable oil. The compound has a biorenewable content of at least about 50 weight percent of the compound. The compound can be used to make a plastic article needing a Shore A hardness of from about 40 to about 70. The compound is a sustainable solution for extruded or molded articles.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: March 17, 2015
    Assignee: PolyOne Corporation
    Inventors: Guoqiang Qian, Krishna Venkataswamy
  • Patent number: 8912266
    Abstract: A blend of styrene-isobutylene-styrene based thermoplastic elastomer and organoclay-filled polyamide is disclosed which has good processability and more effective barrier properties for oxygen than the blend using amorphous or crystalline polyamide without organoclay.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: December 16, 2014
    Assignee: PolyOne Corporation
    Inventors: Guoqiang Qian, Liang Xu, Krishna Venkataswamy
  • Publication number: 20140107269
    Abstract: A blend of styrene-isobutylene-styrene based thermoplastic elastomer and organoclay-filled polyamide is disclosed which has good processability and more effective barrier properties for oxygen than the blend using amorphous or crystalline polyamide without organoclay.
    Type: Application
    Filed: December 20, 2013
    Publication date: April 17, 2014
    Applicant: POLYONE CORPORATION
    Inventors: Guoqiang QIAN, Liang XU, Krishna VENKATASWAMY
  • Publication number: 20140011898
    Abstract: A thermoplastic elastomer compound is blended from styrenic block copolymer, thermoplastic vulcanizate, thermoplastic polyurethane, a compatibilizer, and a masterbatch containing silicone, which is added to provide a qualitative silky feel on surfaces of plastic articles made from the compound.
    Type: Application
    Filed: March 11, 2013
    Publication date: January 9, 2014
    Applicant: POLYONE CORPORATION
    Inventors: Guoqiang QIAN, Krishna VENKATASWAMY, Malar SHETTY
  • Patent number: 8497313
    Abstract: A thermoplastic elastomer compound is disclosed having polyether-polyamide copolymer, epoxidized soybean oil, and vulcanized vegetable oil. The compound has a biorenewable content of the compound of at least about 70 weight percent. The compound can be used to make a plastic article needing a Shore A hardness of from about 22 to about 72. The compound is a sustainable solution for extruded or molded articles.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: July 30, 2013
    Assignee: PolyOne Corporation
    Inventors: Guoqiang Qian, Krishna Venkataswamy
  • Publication number: 20130005901
    Abstract: A thermoplastic elastomer compound is disclosed having copolyester elastomer, epoxidized soybean oil, and vulcanized vegetable oil. The compound has a biorenewable content of at least about 50 weight percent of the compound. The compound can be used to make a plastic article needing a Shore A hardness of from about 40 to about 70. The compound is a sustainable solution for extruded or molded articles.
    Type: Application
    Filed: March 16, 2011
    Publication date: January 3, 2013
    Applicant: PolyOne Corporation
    Inventors: Guoqiang Qian, Krishna Venkataswamy
  • Publication number: 20120070601
    Abstract: A blend of any of three specific olefin polymers and ethylene/alpha-olefin interpolymer is disclosed. Optionally, the blend also includes styrene-isobutylene-styrene thermoplastic vulcanizate and calcium carbonate filler. The blend has good processability and passes Olive Oil Extraction Test EU82/711/EEC and the FDA Food Contact Test required at 21 CFR §177.2600, enabling plastic articles of the blend to be used as thermoplastic elastomers in food handling and storage articles.
    Type: Application
    Filed: May 17, 2010
    Publication date: March 22, 2012
    Applicant: POLYONE CORPORATION
    Inventors: Guoqiang Qian, Krishna Venkataswamy