Patent Number: 8,815,382

Title: Method and use of organic and mineral admixtures for EMI and radioactive isotope shielding of building materials such as glass fiber wall coverings, gypsum wallboard and electrically conductive or resistive, high performance, high strength concrete

Abstract: A method is disclosed for the use of an organic admixture composed of a polysaccharide such as hydroxypropylcellulose and a monosaccharide such as ethoxylated methylglucoside and de-ionized water and minerals such as zeolites for electromagnetic; radio and microwave frequency and radioisotope shielding of building materials such as wall liners, gypsum wallboard and high performance, high strength concrete.

Inventors: Robinson, Jr.; William L. (Baltimore, MD)

Assignee: U.S. Harves Postal Protection Services Corporation

International Classification: B32B 13/02 (20060101); B05D 7/24 (20060101); B32B 17/08 (20060101); G21F 1/10 (20060101)

Expiration Date: 8/26/12018