Patents by Inventor Kaushal Gandhi

Kaushal Gandhi 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: 20230183472
    Abstract: Thermoplastic compositions include from about 15 wt % to about 99 wt % of a polybutylene terephthalate (PBT) component; and from 0.01 wt % to about 85 wt % of at least one additional component, wherein: the PBT component comprises PBT derived from a post-consumer or post-industrial recycled (PCR) polyethylene terephthalate (PET) depolymerized to a high purity purified terephthalic acid (PTA) monomer and the thermoplastic composition exhibits an L* color value of at least about 74.
    Type: Application
    Filed: May 12, 2021
    Publication date: June 15, 2023
    Inventors: Peter Vollenberg, Kaushal Gandhi, Lohith Kenchaiah, Gaurav Mediratta, Ranjan DASH
  • Publication number: 20230174738
    Abstract: A method includes depolymerizing post-consumer or post-industrial recycled polyethylene terephthalate (rPET) to form bis(2-hydroxyethyl) terephthalate (BHET), and reacting at least a portion of the BHET with a catalyst to form an alcohol. The alcohol includes cyclohexanedimethanol (CHDM) or 1,4-phenylenedimethanol (PDM). Further steps of the method include polymerizing the alcohol in the presence of additional BHET to form a polyester. The polyester may include poly(cyclohexylenedimethylene terephthalate (PCT), polyethylene terephthalate glycol (PETG) copolyester, polycyclohexylene dimethylene terephthalate glycol (PCTG) copolyester, polycyclohexylene dimethylene terephthalate acid (PCTA), or a monomer having repeating units with the structure (I), wherein n is an integer having a value of at least 20.
    Type: Application
    Filed: May 11, 2021
    Publication date: June 8, 2023
    Inventors: Lohith Kenchaiah, Peter Vollenberg, Kaushal Gandhi, Ranjith CHOORIKKAT, Vinod KN
  • Publication number: 20220389216
    Abstract: A polycarbonate composition includes particular amounts of a virgin polycarbonate and a purified recycled polycarbonate. The polycarbonate composition can exhibit improved color. The polycarbonate composition can be useful for forming molded articles. A method of purifying a post-consumer or post-industrial recycle polycarbonate composition is also disclosed.
    Type: Application
    Filed: December 15, 2020
    Publication date: December 8, 2022
    Inventors: Viswanathan KALYANARAMAN, Kaushal GANDHI, Philip Wesley BELL, Gregory SHANKWITZ
  • Publication number: 20220056202
    Abstract: Thermoplastic compositions include from about 15 wt % to about 98 wt % of a polybutylene terephthalate (PBT) component, from about 2 wt % to about 10 wt % of at least one brightening agent and from 0 wt % to about 83 wt % of at least one additional component. The PBT component includes PBT derived from post-consumer or post-industrial recycled (PCR) polyethylene terephthalate (PET). In particular, the PBT may be derived from the PCR PET by first depolymerizing the PCR PET to form a high purity bis(2-hydroxyethyl) terephthalate (BHET) monomer (e.g., greater than 95% purity), and then polymerizing the high purity BHET monomer with butane diol (BDO) to form the PBT. The thermoplastic compositions have an L* color value of at least about 94.
    Type: Application
    Filed: January 10, 2020
    Publication date: February 24, 2022
    Inventors: Peter VOLLENBERG, Kaushal GANDHI, Lohith KENCHAIAH, Gaurav MEDIRATTA
  • Publication number: 20210252833
    Abstract: A composite material includes: a substrate layer; a first layer including a thermoplastic material applied to the substrate layer, the first layer having a refractive index greater than 1.2 resulting from application of at least one secondary process to the first layer; and a surface coating including a transparent polymer applied to the first layer. The surface coating has a refractive index of from 1 to 2. Methods for making the composite material and articles including the composite material are also described.
    Type: Application
    Filed: June 28, 2019
    Publication date: August 19, 2021
    Inventors: Bing ZHOU, Kaushal GANDHI, Charles Allen HIRSCH, Samuel BENTUM
  • Patent number: 10017622
    Abstract: Polymeric compositions having improved flame retardance properties are disclosed. The compositions comprise a cross-linkable polycarbonate resin having a photoactive group derived from a dihydroxybenzophenone, and also include a colorant. Certain colorant packages lead to an unexpected increase in crosslinking.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: July 10, 2018
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Amanda Marie Flores, Kaushal Gandhi
  • Publication number: 20170198113
    Abstract: Polymeric compositions having improved flame retardance properties are disclosed. The compositions comprise a cross-linkable polycarbonate resin having a photoactive group derived from a dihydroxybenzophenone, and also include a colorant. Certain colorant packages lead to an unexpected increase in crosslinking.
    Type: Application
    Filed: September 15, 2015
    Publication date: July 13, 2017
    Inventors: Amanda Marie Flores, Kaushal Gandhi
  • Patent number: 7550017
    Abstract: A nonwoven textile substrate formed from microfibers with a polyurethane matrix fully and/or partially impregnated therein, a nonazo disperse dye within microfibers, including the surface, and the matrix. The dyed fibers having an L value of about 35 or less, an ?E light fastness of about 6 or less when subjected to about 225 kilo-joules, and a long term crock of at least about 1.5.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: June 23, 2009
    Assignee: Milliken & Company
    Inventors: Kaushal Gandhi, Benjamin H. Glover
  • Patent number: 7371700
    Abstract: A nonwoven textile substrate formed from microfibers with a polyurethane matrix fully and/or partially impregnated therein, a non-azo disperse dye within microfibers, including the surface, and the matrix. The dyed fibers having an L value of about 35 or less, an ?E light fastness of about 6 or less when subjected to about 225 kilo-joules, and a long term crock of at least about 1.5.
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: May 13, 2008
    Assignee: Milliken & Company
    Inventors: Kaushal Gandhi, Benjamin H. Glover
  • Publication number: 20080060143
    Abstract: A nonwoven textile substrate formed from microfibers with a polyurethane matrix fully and/or partially impregnated therein, a nonazo disperse dye within microfibers, including the surface, and the matrix. The dyed fibers having an L value of about 35 or less, an ?E light fastness of about 6 or less when subjected to about 225 kilo-joules, and a long term crock of at least about 1.5.
    Type: Application
    Filed: November 8, 2007
    Publication date: March 13, 2008
    Inventors: Kaushal Gandhi, Benjamin Glover
  • Publication number: 20050194708
    Abstract: A nonwoven textile substrate formed from microfibers with a polyurethane matrix fully and/or partially impregnated therein, a nonazo disperse dye within microfibers, including the surface, and the matrix. The dyed fibers having an L value of about 35 or less, an ? E light fastness of about 6 or less when subjected to about 225 kilo-joules, and a long term crock of at least about 1.5.
    Type: Application
    Filed: December 14, 2004
    Publication date: September 8, 2005
    Inventors: Kaushal Gandhi, Benjamin Glover
  • Patent number: 6844276
    Abstract: A nonwoven textile substrate formed from microfibers with a polyuerthane matrix fully and/or partially impregnated therein, a nonazo disperse dye within microfibers, including the surface, and the matrix. The dyed fibers having an L value of about 35 or less, an ?E light fastness of about 6 or less when subjected to about 225 kilo-joules, and a long term crock of at least about 1.5.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: January 18, 2005
    Assignee: Milliken & Company
    Inventors: Kaushal Gandhi, Benjamin H. Glover
  • Patent number: 6812172
    Abstract: In a preferred embodiment, the present process involves subjecting a fabric comprised of conjugate yarns to an acidic treatment, which degrades a portion of one component of the conjugate yarns and to dyeing. The acid treatment, given certain reaction kinetics, removes a portion of the polyamide element of the conjugate filament. The at least partial removal of the polyamide component results in a fabric has enhanced dyed appearance, especially when dyed a dark shade. In an alternate embodiment, the fabric may also be treated with a basic solution to improve its moisture transport properties.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: November 2, 2004
    Assignee: Milliken & Company
    Inventors: Heather J. Hayes, Crystal A. Garner, Kirkland W. Vogt, Kaushal Gandhi
  • Patent number: 6689175
    Abstract: In a preferred embodiment, the present process involves subjecting a fabric comprised of conjugate yarns to an acidic treatment, which degrades a portion of one component of the conjugate yarns and to dyeing. The acid treatment, given certain reaction kinetics, removes a portion of the polyamide element of the conjugate filament. The at least partial removal of the polyamide component results in a fabric has enhanced dyed appearance, especially when dyed a dark shade. In an alternate embodiment, the fabric may also be treated with a basic solution to improve its moisture transport properties.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: February 10, 2004
    Assignee: Milliken & Company
    Inventors: Heather J. Hayes, Crystal A. Garner, Kirkland W. Vogt, Kaushal Gandhi
  • Publication number: 20030157860
    Abstract: In a preferred embodiment, the present process involves subjecting a fabric comprised of conjugate yarns to an acidic treatment, which degrades a portion of one component of the conjugate yarns and to dyeing. The acid treatment, given certain reaction kinetics, removes a portion of the polyamide element of the conjugate filament. The at least partial removal of the polyamide component results in a fabric has enhanced dyed appearance, especially when dyed a dark shade. In an alternate embodiment, the fabric may also be treated with a basic solution to improve its moisture transport properties.
    Type: Application
    Filed: February 12, 2002
    Publication date: August 21, 2003
    Inventors: Heather J. Hayes, Crystal A. Garner, Kirkland W. Vogt, Kaushal Gandhi
  • Publication number: 20030154554
    Abstract: In a preferred embodiment, the present process involves subjecting a fabric comprised of conjugate yarns to an acidic treatment, which degrades a portion of one component of the conjugate yarns and to dyeing. The acid treatment, given certain reaction kinetics, removes a portion of the polyamide element of the conjugate filament. The at least partial removal of the polyamide component results in a fabric has enhanced dyed appearance, especially when dyed a dark shade. In an alternate embodiment, the fabric may also be treated with a basic solution to improve its moisture transport properties.
    Type: Application
    Filed: February 12, 2002
    Publication date: August 21, 2003
    Inventors: Heather J. Hayes, Crystal A. Garner, Kirkland W. Vogt, Kaushal Gandhi
  • Publication number: 20020137419
    Abstract: A nonwoven textile substrate formed from microfibers with a polyuerthane matrix fully and/or partially impregnated therein, a nonazo disperse dye within microfibers, including the surface, and the matrix. The dyed fibers having an L value of about 35 or less, an &Dgr;E light fastness of about 6 or less when subjected to about 225 kilo-joules, and a long term crock of at least about 1.5.
    Type: Application
    Filed: March 21, 2002
    Publication date: September 26, 2002
    Inventors: Kaushal Gandhi, Benjamin H. Glovar