1. Chiroshield: a Salisbury/Dallenbach shield alternative
2. and Novel shielding, reflection and scattering control using chiral materials, U.S. patent 5,099,242, 1990.
3. and Chiral absorber, G.B. patent 2257302, 1991.
4. and Absorbing polarisator shield having planar chiral patterns, E.P. patent 526269, 1991.