Patents by Inventor Nyrissa S. Rogado

Nyrissa S. Rogado 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).

  • Composition of polyimide and sterically-hindered hydrophobic epoxy
    Patent number: 7745516
    Abstract: Water absorption resistant polyimide/epoxy-based compositions, like pastes (or solutions), are particularly useful to make electronic screen-printable materials and electronic components. A group of hydrophobic epoxies (and soluble polyimides) was discovered to be particularly resistant to moisture absorption. The polyimide/epoxy pastes made with these epoxies (and these polyimides) may optionally contain thermal crosslinking agents, adhesion promoting agents, blocked isocyanates, and other inorganic fillers. The polyimide/epoxy pastes of the present invention can have a glass transition temperature greater than 250° C., a water absorption factor of less than 2%, and a positive solubility measurement.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: June 29, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Thomas Eugene Dueber, John D. Summers, Brian C. Auman, Munirpallam Appadorai Subramanian, Nyrissa S. Rogado
  • Compositions comprising polyimide and hydrophobic epoxy and phenolic resins, and methods relating thereto
    Publication number: 20090111948
    Abstract: Water absorption resistant compositions of the present disclosure, e.g., pastes (or solutions), are well suited for electronic screen-printable materials and electronic components. The composition of the present disclosure may optionally contain thermal crosslinking agents, adhesion promoters, and other inorganic fillers. The composition of the present disclosure can have a glass transition temperature greater than 250° C. and a water absorption factor of less than 2%, and a positive solubility measurement.
    Type: Application
    Filed: October 25, 2007
    Publication date: April 30, 2009
    Inventors: Thomas Eugene Dueber, Nyrissa S. Rogado
  • Low temperature coefficient of resistivity polymeric resistors based on metal carbides and nitrides
    Patent number: 7477131
    Abstract: Provided are compositions containing 20 to 50% by volume of a nitride or carbide of a group IV metal, a polymer, and 1 to 9% by volume of an allotrope of carbon. The compositions are useful in manufacturing resistors with low temperature coefficients of resistivity.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: January 13, 2009
    Assignee: E.I. Du Pont De Nemours
    Inventors: Nyrissa S. Rogado, Munirpallam Appadorai Subramanian
  • Low temperature coefficient of resistivity polymeric resistors based on metal carbides and nitrides
    Publication number: 20080061273
    Abstract: Provided are compositions containing 20 to 50% by volume of a nitride or carbide of a group IV metal, a polymer, and 1 to 9% by volume of an allotrope of carbon. The compositions are useful in manufacturing resistors with low temperature coefficients of resistivity.
    Type: Application
    Filed: September 7, 2006
    Publication date: March 13, 2008
    Inventors: Nyrissa S. Rogado, Munirpallam Appadorai Subramanian