Patents by Inventor Steven R. Givens

Steven R. Givens 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).

  • HIGH POROSITY HIGH BASIS WEIGHT FILTER MEDIA
    Publication number: 20120318752
    Abstract: A filter medium containing a nonwoven nanoweb made of aromatic polymer fibers, wherein the nanoweb has a porosity of 85% or greater, a basis weight of 5 grams per square meter or greater, a mean pore size of 0.1 to 10 ?m and a uniformity index of between 1.5 and 2.5.
    Type: Application
    Filed: December 19, 2011
    Publication date: December 20, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Yogeshwar K. Velu, Steven R. Givens, Joseph Robert Guckert
  • Method of solution preparation of polyolefin class polymers for electrospinning processing included
    Patent number: 8083983
    Abstract: A process to make a polyolefin fiber which has the following steps: mixing at least one polyolefin into a solution at room temperature or a slightly elevated temperature to form a polymer solution and electrospinning at room temperature said polymer solution to form a fiber.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: December 27, 2011
    Inventors: John F. Rabolt, Keun-Hyung Lee, Steven R. Givens
  • METHOD OF SOLUTION PREPARATION OF POLYOLEFIN CLASS POLYMERS FOR ELECTROSPINNING PROCESSING INCLUDING
    Publication number: 20100056007
    Abstract: A process to make a polyolefin fiber which has the following steps: mixing at least one polyolefin into a solution at room temperature or a slightly elevated temperature to form a polymer solution and electrospinning at room temperature said polymer solution to form a fiber.
    Type: Application
    Filed: November 22, 2006
    Publication date: March 4, 2010
    Inventors: John F. Rabolt, Keun-Hyung Lee, Steven R. Givens
  • Low modulus, high tensile strength optical fiber coating
    Publication number: 20030123839
    Abstract: A coating composition includes at least one oligomer including a polyol soft block having a number average molecular weight of more than about 4000, and at least one reactive monomer. The cured coating composition has a tensile strength of at least about 0.85 MPa and a Young's Modulus of less than about 1.3 MPa. The invention further includes an optical fiber having a primary coating layer with the aforementioned coating composition and a method for coating the optical fiber.
    Type: Application
    Filed: July 27, 2001
    Publication date: July 3, 2003
    Inventors: Kevin Y. Chou, Steven R. Givens, David N. Schissel