Patents by Inventor Amrit Parhar

Amrit Parhar 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: 11976222
    Abstract: Disclosed are solvent cement formulations having beneficial stability and performance characteristics that include a thermoplastic resin, one or more organic solvents, an inhibitor of an oxidation-reduction reaction, and a heat stabilizer.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: May 7, 2024
    Assignee: Oatey Co.
    Inventor: Amrit Parhar
  • Patent number: 11951689
    Abstract: Provided are primer formulations for solvent cement bonding comprising cyclopentanone and, optionally, at least one additional organic solvent. The primer formulations are effective for solvent cement bonding plastic components together, wherein the plastic components may include ABS, PVC, or CPVC pipes and/or fittings.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: April 9, 2024
    Assignee: OATEY CO.
    Inventor: Amrit Parhar
  • Publication number: 20240034919
    Abstract: Provided are solvent cement formulations comprising some or all of tetrahydrofuran, cyclohexanone, methyl ethyl ketone, acetone, a thermoplastic resin, silica, and, a solvent soluble acrylic copolymer associative thickener. The disclosed formulations contain a reduced complement of volatile organic compounds (VOCs) relative to conventional cement formulations, yet are capable of meeting the requirements for regular-, medium-, and heavy-duty applications. The use of specialized associative thickener components confers a required degree of viscosity while enabling a reduction in the concentration of VOCs, such as tetrahydrofuran.
    Type: Application
    Filed: May 1, 2023
    Publication date: February 1, 2024
    Inventors: Amrit PARHAR, Willie PEREZ
  • Publication number: 20230203352
    Abstract: Disclosed are solvent cement formulations having beneficial stability and performance characteristics that include a thermoplastic resin, one or more organic solvents, an inhibitor of an oxidation-reduction reaction, and a heat stabilizer.
    Type: Application
    Filed: February 22, 2023
    Publication date: June 29, 2023
    Inventor: Amrit Parhar
  • Patent number: 11674060
    Abstract: Provided are solvent cement formulations comprising some or all of tetrahydrofuran, cyclohexanone, methyl ethyl ketone, acetone, a thermoplastic resin, silica, and, a solvent soluble acrylic copolymer associative thickener. The disclosed formulations contain a reduced complement of volatile organic compounds (VOCs) relative to conventional cement formulations, yet are capable of meeting the requirements for regular-, medium-, and heavy-duty applications. The use of specialized associative thickener components confers a required degree of viscosity while enabling a reduction in the concentration of VOCs, such as tetrahydrofuran.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: June 13, 2023
    Assignee: Oatey Co.
    Inventors: Amrit Parhar, Willie Perez
  • Patent number: 11597859
    Abstract: Disclosed are solvent cement formulations having beneficial stability and performance characteristics that include a thermoplastic resin, one or more organic solvents, an inhibitor of an oxidation-reduction reaction, and a heat stabilizer.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: March 7, 2023
    Assignee: OATEY CO.
    Inventor: Amrit Parhar
  • Publication number: 20220288868
    Abstract: Provided are primer formulations for solvent cement bonding comprising cyclopentanone and, optionally, at least one additional organic solvent. The primer formulations are effective for solvent cement bonding plastic components together, wherein the plastic components may include ABS, PVC, or CPVC pipes and/or fittings.
    Type: Application
    Filed: June 2, 2022
    Publication date: September 15, 2022
    Inventor: Amrit Parhar
  • Publication number: 20220267645
    Abstract: Provided are THF-free primer formulations for solvent cement bonding comprising cyclopentanone and at least one additional organic solvent. The primer formulations are effective for solvent cement bonding plastic components together, wherein the plastic components may include ABS, PVC, or CPVC pipes and/or fittings.
    Type: Application
    Filed: May 12, 2022
    Publication date: August 25, 2022
    Inventor: Amrit Parhar
  • Patent number: 11351741
    Abstract: Provided are primer formulations for solvent cement bonding comprising cyclopentanone and, optionally, at least one additional organic solvent. The primer formulations are effective for solvent cement bonding plastic components together, wherein the plastic components may include ABS, PVC, or CPVC pipes and/or fittings.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: June 7, 2022
    Assignee: OATEY CO.
    Inventor: Amrit Parhar
  • Publication number: 20220161507
    Abstract: Provided are primer formulations for solvent cement bonding comprising cyclopentanone and, optionally, at least one additional organic solvent. The primer formulations are effective for solvent cement bonding plastic components together, wherein the plastic components may include ABS, PVC, or CPVC pipes and/or fittings.
    Type: Application
    Filed: November 23, 2020
    Publication date: May 26, 2022
    Inventor: Amrit Parhar
  • Publication number: 20220089493
    Abstract: Provided are solvent cement formulations that include cyclopentanone, one or more additional solvents, and at least one resin. The formulations can contain a high concentration of dissolved resin, which confers beneficial properties and enables the use of the formulations for bonding large diameter piping components.
    Type: Application
    Filed: September 23, 2020
    Publication date: March 24, 2022
    Inventors: Amrit Parhar, Willie J. Perez
  • Publication number: 20210230462
    Abstract: Disclosed are solvent cement formulations having beneficial stability and performance characteristics that include a thermoplastic resin, one or more organic solvents, an inhibitor of an oxidation-reduction reaction, and a heat stabilizer.
    Type: Application
    Filed: January 22, 2021
    Publication date: July 29, 2021
    Inventor: Amrit Parhar
  • Publication number: 20210009866
    Abstract: Provided are solvent cement formulations comprising some or all of tetrahydrofuran, cyclohexanone, methyl ethyl ketone, acetone, a thermoplastic resin, silica, and, a solvent soluble acrylic copolymer associative thickener. The disclosed formulations contain a reduced complement of volatile organic compounds (VOCs) relative to conventional cement formulations, yet are capable of meeting the requirements for regular-, medium-, and heavy-duty applications. The use of specialized associative thickener components confers a required degree of viscosity while enabling a reduction in the concentration of VOCs, such as tetrahydrofuran.
    Type: Application
    Filed: September 24, 2020
    Publication date: January 14, 2021
    Inventors: Amrit Parhar, Willie Perez
  • Patent number: 10865331
    Abstract: Provided are solvent cement formulations comprising some or all of tetrahydrofuran, cyclohexanone, methyl ethyl ketone, acetone, a thermoplastic resin, silica, and, a solvent soluble acrylic copolymer associative thickener. The disclosed formulations contain a reduced complement of volatile organic compounds (VOCs) relative to conventional cement formulations, yet are capable of meeting the requirements for regular-, medium-, and heavy-duty applications. The use of specialized associative thickener components confers a required degree of viscosity while enabling a reduction in the concentration of VOCs, such as tetrahydrofuran.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: December 15, 2020
    Assignee: OATEY CO.
    Inventors: Amrit Parhar, Willie Perez
  • Publication number: 20190085220
    Abstract: Provided are solvent cement formulations comprising some or all of tetrahydrofuran, cyclohexanone, methyl ethyl ketone, acetone, a thermoplastic resin, silica, and, a solvent soluble acrylic copolymer associative thickener. The disclosed formulations contain a reduced complement of volatile organic compounds (VOCs) relative to conventional cement formulations, yet are capable of meeting the requirements for regular-, medium-, and heavy-duty applications. The use of specialized associative thickener components confers a required degree of viscosity while enabling a reduction in the concentration of VOCs, such as tetrahydrofuran.
    Type: Application
    Filed: February 3, 2017
    Publication date: March 21, 2019
    Inventors: Amrit PARHAR, Willie PEREZ
  • Publication number: 20180142131
    Abstract: A high viscosity primer and a process for preparing a polymer surface for solvent cement bonding are disclosed. The high viscosity primer has at least one solvent capable of at least partially dissolving or softening the surface and comprising a thickener ethylcellulose, PVC resin, polyvinylpyrrolidone (PVP) resin, acrylic resin, acrylonitrile butadiene styrene (ABS), pentaerythritol ethoxylate, or a combination thereof and present at a concentration in a range of from about 0.5 wt % to about 10 wt %, relative to the total weight of the primer. The high viscosity primer has a viscosity in a range of from about 10 to about 100 centipoise.
    Type: Application
    Filed: May 27, 2016
    Publication date: May 24, 2018
    Inventors: Amrit PARHAR, Willie PEREZ
  • Patent number: 9163389
    Abstract: A toilet sealing ring for sealing the outlet of a floor mounted toilet to a mating drain pipe comprises an annular mass of a wax based composition comprising a wax component and at least 20 wt. % of a non-wax filler component.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: October 20, 2015
    Assignee: OATEY COMPANY
    Inventors: Raymond Toby Rael, Hayat El-Khoury, Amrit Parhar, Forest Hampton, III
  • Publication number: 20120280459
    Abstract: A stainfree plumber's putty comprises at least one particulate filler and an organic binder comprising a liquid polyester and a low density wax, the putty being formulated to pass ASTM-D-2203—Staining of Oil and Resin-Base Caulking Compounds.
    Type: Application
    Filed: May 4, 2012
    Publication date: November 8, 2012
    Applicant: OATEY CO.
    Inventors: Amrit Parhar, Raymond Toby Rael, Hayat El-Khoury
  • Publication number: 20120174305
    Abstract: A toilet sealing ring for sealing the outlet of a floor mounted toilet to a mating drain pipe comprises an annular mass of a wax based composition comprising a wax component and at least 20 wt. % of a non-wax filler component.
    Type: Application
    Filed: December 20, 2011
    Publication date: July 12, 2012
    Applicant: OATEY COMPANY
    Inventors: Amrit Parhar, Forest Hampton, III, Raymond Toby Rael, Hayat El-Khoury
  • Patent number: 7838585
    Abstract: Macrocyclic compounds, e.g., ketones, crown ethers, methicones etc., have been found to be effective co-solvents in solvent based adhesives for pipe joining applications. Because of their enhanced solubility with VOC exempt solvents (40 C.F.R. 51.100), the calculated VOC content of the adhesive can be lowered to at least 75% of those established by SCAQMD Rule 116A.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: November 23, 2010
    Assignee: Oatey Company
    Inventors: Amrit Parhar, Forest Hamptom, III, Robert J. Duff