Patents by Inventor Rafael J. Zaldivar

Rafael J. Zaldivar 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).

  • CARBONACEOUS NANO-SCALED MATERIALS HAVING HIGHLY FUNCTIONALIZED SURFACE
    Publication number: 20130099170
    Abstract: A method and composition wherein carbonaceous nano-scaled filler material is subjected to atmospheric plasma treatment using carbon monoxide as the active gas. The treatment with carbon monoxide plasma has been found to significantly increase the incorporation of oxygen groups on the surface of the filler material without degrading the surface and thus serves to increase wettability and dispersion throughout the matrix. The composite that incorporates the treated filler material has enhanced mechanical and electrical properties.
    Type: Application
    Filed: October 19, 2011
    Publication date: April 25, 2013
    Applicant: THE AEROSPACE CORPORATION
    Inventors: RAFAEL J. ZALDIVAR, James P. Nokes, Hyun I. Kim
  • SYSTEM AND MEHTOD FOR MEASURING GLASS TRANSITION TEMPERATURE
    Publication number: 20120307860
    Abstract: A system and method for measuring a glass transition temperature of a hydrophobic polymer having a surface tagged with an atmospheric plasma.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 6, 2012
    Inventors: Rafael J. Zaldivar, James P. Nokes
  • HYBRID ADHESIVE
    Publication number: 20120082851
    Abstract: A hybrid adhesive incorporating cyanate ester and/or epoxy materials and utilizing atmospheric plasma treatment provides stronger, more reliable joints in structural composite parts.
    Type: Application
    Filed: October 3, 2010
    Publication date: April 5, 2012
    Inventors: Rafael J. Zaldivar, James P. Nokes
  • Needle probe glass transition temperature measurement system
    Publication number: 20020196834
    Abstract: A glass transition temperature Tg measurement system includes a probe point penetrating into a sample under test that has been heated by a heater to a temperature where the sample undergoes a phase change from a solid to a semisolid. A thermocouple is used to measure the temperature while a motion transducer is used to measure the amount of penetration. The penetration amount sharply increases at the glass transition temperature. A portable unit can be used in the field to test the Tg properties of various composite materials used, for example, in structures including buildings and bridges.
    Type: Application
    Filed: June 22, 2001
    Publication date: December 26, 2002
    Inventors: Rafael J. Zaldivar, James P. Nokes, Gary F. Hawkins
  • Glass transition temperature measurement system
    Patent number: 6425686
    Abstract: A glass transition temperature Tg measurement system includes a probe point penetrating into a sample under test that has been heated by a heater to a temperature where the sample undergoes a phase change from a solid to a semisolid. A thermocouple is used to measure the temperature while a motion transducer is used to measure the amount of penetration. The penetration amount sharply increases at the glass transition temperature. A portable unit can be used in the field to test the Tg properties of various composite materials used, for example, in structures including buildings and bridges.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: July 30, 2002
    Assignee: The Aerospace Corporation
    Inventors: Rafael J. Zaldivar, James P. Nokes, Gary F. Hawkins