Patents by Inventor Helina Joshi

Helina Joshi 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).

  • Large diameter thermoplastic seal
    Patent number: 9702462
    Abstract: A seal ring includes a weld and a thermoplastic material. The thermoplastic material has a weld elongation-at-break of at least 3%. The thermoplastic material can have a glass transition temperature of at least 100° C. The thermoplastic material with the weld can have a weld elongation-at-break of at least 3%. The seal ring can have a circumference of at least 0.62 meters. The seal ring can have a coefficient of friction of not greater than 0.45.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: July 11, 2017
    Assignee: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventors: Ceyhan Celik, Sarah L. Clark, Gary Charles Hildreth, Jr., Helina Joshi, Karthik Vaideeswaran, Christophe Valdenaire, Jose R. Sousa, Hamid Reza Ghalambor
  • Method of forming large diameter thermoplastic seal
    Patent number: 8721823
    Abstract: A method of forming a seal ring includes heating an extruded rod to a temperature above a glass transition temperature. The extruded rod has first and second ends. The method further includes bending the extruded rod into a circular structure while the temperature is above the glass transition temperature, joining the first and second ends of the extruded rod to form a semi-finished ring, and annealing the semi-finished ring.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: May 13, 2014
    Assignee: Saint-Gobain Performance Plastics Corporation
    Inventors: Karthik Vaideeswaran, Jose R. Sousa, Hamid Reza Ghalambor, Sarah L. Clark, Ceyhan Celik, Gary Charles Hildreth, Jr., Helina Joshi
  • Large Diameter Thermoplastic Seal
    Publication number: 20140087115
    Abstract: A seal ring includes a weld and a thermoplastic material. The thermoplastic material has a weld elongation-at-break of at least 3%. The thermoplastic material can have a glass transition temperature of at least 100° C. The thermoplastic material with the weld can have a weld elongation-at-break of at least 3%. The seal ring can have a circumference of at least 0.62 meters. The seal ring can have a coefficient of friction of not greater than 0.45.
    Type: Application
    Filed: December 2, 2013
    Publication date: March 27, 2014
    Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventors: Ceyhan Celik, Sarah L. Clark, Gary Charles Hildreth, JR., Helina Joshi, Karthik Vaideeswaran, Christophe Valdenaire, Jose R. Sousa, Hamid Reza Ghalambor
  • METHOD OF FORMING LARGE DIAMETER THERMOPLASTIC SEAL
    Publication number: 20100116422
    Abstract: A method of forming a seal ring includes heating an extruded rod to a temperature above a glass transition temperature. The extruded rod has first and second ends. The method further includes bending the extruded rod into a circular structure while the temperature is above the glass transition temperature, joining the first and second ends of the extruded rod to form a semi-finished ring, and annealing the semi-finished ring.
    Type: Application
    Filed: November 6, 2009
    Publication date: May 13, 2010
    Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventors: Karthik Vaideeswaran, Jose R. Sousa, Hamid Reza Ghalambor, Sarah L. Clark, Ceyhan Celik, Gary Charles Hildreth, JR., Helina Joshi
  • LARGE DIAMETER THERMOPLASTIC SEAL
    Publication number: 20100117310
    Abstract: A seal ring includes a weld and a thermoplastic material. The thermoplastic material has a weld elongation-at-break of at least 3%. The thermoplastic material can have a glass transition temperature of at least 100° C. The thermoplastic material with the weld can have a weld elongation-at-break of at least 3%. The seal ring can have a circumference of at least 0.62 meters. The seal ring can have a coefficient of friction of not greater than 0.45.
    Type: Application
    Filed: November 6, 2009
    Publication date: May 13, 2010
    Applicant: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventors: Ceyhan Celik, Sarah L. Clark, Gary Charles Hildreth, Helina Joshi, Karthik Vaideeswaran, Christophe Valdenaire, Jose Sousa, Hamid Reza Ghalambor