Patents by Inventor Victor N. Warden

Victor N. Warden 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).

  • Gradient index glasses and sol-gel method for their preparation
    Patent number: 5182236
    Abstract: A gradient index glass comprised of (SiO.sub.2).sub.m (R.sub.2 O).sub.n X.sub.p, wherein R is Li, Na, K, Rb, or Cs, and X=TiO.sub.2, ZrO.sub.2 and/or HfO.sub.2, m is 44 to 99, n is 0.25 to 20, p is at least 0.1, and m+n+p=100.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: January 26, 1993
    Assignees: Enichem S.p.A., Istituto Guido Donegani S.p.A.
    Inventors: J. Brian Caldwell, Mark A. Banash, Tessie M. Che, Robert M. Mininni, Victor N. Warden