Benjamin G Penn, 77313 Lena Cain Blvd, Madison, AL 35756

7855157, Dec 21, 2010

Jun 19, 2008

12/142220

Raj K. Kaul - Owens Cross Roads AL, US
Abdulnasser Fakhri Barghouty - Madison AL, US
Benjamin G. Penn - Madison AL, US
Anthony Bruce Hulcher - New Market AL, US

The United States of America as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC

B32B 5/26
B32B 5/28

442220, 442 64, 442 71, 442131, 442170, 442268, 442269, 442277, 442281, 442366, 442381, 442389, 442415

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.

4680897, Jul 21, 1987

Dec 3, 1985

6/804039

Julia G. Daniels - Madison AL
Frank E. Ledbetter - Huntsville AL
Johnny M. Clemons - Trinity AL
Benjamin G. Penn - Huntsville AL
William T. White - Huntsville AL

The United States of America as represented by the Administrator of the
National Aeronautics and Space Administration - Washington DC

B24C 108
B23B 3500

51281R

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.

4474975, Oct 2, 1984

May 9, 1983

6/492963

Johnny M. Clemons - Trinity AL
Benjamin G. Penn - Huntsville AL
Frank E. Ledbetter - Huntsville AL

The United States of America as represented by the Administrator of the
National Aeronautics and Space Administration - Washington DC

C07F 708
C07F 710

556410

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.