Patents by Inventor Benjamin G. Penn

Benjamin G. Penn 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).

  • Multi-functional layered structure having structural and radiation shielding attributes
    Patent number: 7855157
    Abstract: A cosmic and solar radiation shielding structure that also has structural attributes is comprised of three layers. The first layer is 30-42 percent by volume of ultra-high molecular weight (UHMW) polyethylene fibers, 18-30 percent by volume of graphite fibers, and a remaining percent by volume of an epoxy resin matrix. The second layer is approximately 68 percent by volume of UHMW polyethylene fibers and a remaining percent by volume of a polyethylene matrix. The third layer is a ceramic material.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: December 21, 2010
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Raj K. Kaul, Abdulnasser Fakhri Barghouty, Benjamin G. Penn, Anthony Bruce Hulcher
  • Method for machining holes in composite materials
    Patent number: 4680897
    Abstract: A method for boring well-defined holes in a composite material such as graphite/epoxy. A slurry of silicon carbide powder and water is projected onto a work area of the composite material in which a hole is to be bored with a conventional drill bit. The silicon carbide powder and water slurry allow the drill bit, while experiencing only normal wear, to bore smooth, cylindrical holes in the composite material.
    Type: Grant
    Filed: December 3, 1985
    Date of Patent: July 21, 1987
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Julia G. Daniels, Frank E. Ledbetter, III, Johnny M. Clemons, Benjamin G. Penn, William T. White
  • Process for producing tris (N-methylamino) methylsilane
    Patent number: 4474975
    Abstract: A method of producing tris (N-methylamine) methylsilane, including the steps of forming and cooling a liquid solution of methylamine in an inert solvent and under an inert atmosphere at a temperature of about -30.degree. C. and slowly adding a quantity of methyltrichlorosilane while maintaining said temperature. The reaction mixture is then heated for about 60 minutes at a temperature of about 40.degree. C., followed by filtering the solid portion from the liquid portion. The liquid is distilled to remove the solvent, resulting in a high yield of tris (N-methylamine) methylsilane.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: October 2, 1984
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Johnny M. Clemons, Benjamin G. Penn, Frank E. Ledbetter, III