Patents by Inventor Roelof de Rooy

Roelof de Rooy 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).

  • Sn alloy bullet therefor
    Patent number: 5500183
    Abstract: The invention relates to a bullet based on an Sn alloy, wherein the Sn alloy comprises Cu, Sb, Bi and/or Zn as an alloying element, wherein the Sn alloy preferably contains 0.2-10% by weight Cu, preferably 0.2-6% by weight Cu, or 0.2-10% by weight Cu and 0.5-20% by weight Sb, preferably 0.2-5% by weight Cu and 0.5-10% by weight Sb, or 1-15% by weight Sb, preferably 1-10% by weight Sb, or 0.5-30% by weight Bi, preferably 5-20% by weight Bi, or 0.005-10% by weight Zn, preferably 0.01-1% by weight Zn. The invention further relates to the use of an Sn alloy for manufacturing a bullet.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: March 19, 1996
    Assignee: Billiton Witmetaal B.V.
    Inventors: Jan Noordegraaf, Martinus A. Oud, Harry Behm, Roelof de Rooy