voir par exemple le brevet "Missile warhead design" de 1997 qui propose un ballast au tungstène mais précise ensuite que "In addition, other ballast sizes and other materials such as lead or depleted uranium may be used without departing from the scope of the present invention", et le brevet "Guided kinetic penetrator" de 2005 qui protège l'invention de "9. The projectile guidance system of claim 1, wherein the kinetic penetrator body comprises at least one of tungsten, carbide steel, and depleted uranium". Voir aussi le "Improved missile warhead design" de 1998 qui protège "2. The invention of Claim 1 wherein the ballast mechanism (16) includes tungsten, lead and/or depleted uranium material(s)", le "Cluster explosively-formed penetrator warheads" de 2011 qui protège "The spherically-shaped explosive device of claim 1, wherein each of the plurality of liners comprises a material selected from a group consisting of copper, molybdenum, tungsten, aluminum, tantalum, depleted uranium, lead, tin, cadmium, cobalt, magnesium, titanium, zinc, zirconium, beryllium, nickel, silver, and combinations thereof", et la "Low-collateral damage directed fragmentation munition" de 2014 qui utilise un anneau en tungstène ou en uranium ("The ring 44 may be made of tungsten or depleted uranium, to give non-limiting examples") pour orienter l'énergie de l'arme. Il est possible d'en trouver d'autres grâce à un simple moteur de recherche (en regardant par exemple sur Google Patents).
