Patents by Inventor Leonardo C. Lopez

Leonardo C. Lopez 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).

  • Method for preparing preforms for molding processes
    Patent number: 5593758
    Abstract: Preforms for molding processes are prepared by applying an aqueous dispersion of a tackifier onto one or more reinforcement fibers, (2) drying the coated reinforcement fibers to remove the water present and (3) forming one or more of the coated reinforcement fibers into a predetermined shape. The preforms comprise reinforcement fibers having a substantially uniformly distributed tackifier on the surface thereof in the form of a discontinuous film coating.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: January 14, 1997
    Assignee: The Dow Chemical Company
    Inventors: Leonardo C. Lopez, Ronald R. Pelletier
  • Method for preparing preforms for molding processes
    Patent number: 5480603
    Abstract: Preforms for molding processes are prepared by applying an aqueous dispersion of a tackifier onto one or more reinforcement fibers, (2) drying the coated reinforcement fibers to remove the water present and (3) forming one or more of the coated reinforcement fibers into a predetermined shape. The preforms comprise reinforcement fibers having a substantially uniformly distributed tackifier on the surface thereof in the form of a discontinuous film coating.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: January 2, 1996
    Assignee: The Dow Chemical Company
    Inventors: Leonardo C. Lopez, Ronald R. Pelletier