Patents by Inventor Roland Sroussi

Roland Sroussi 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).

  • Dielectric and non-magnetic ceramic for high frequency applications
    Patent number: 4159961
    Abstract: Dielectrics without any residual magnetization, produced by the technique of ceramics sintered at high temperatures, usable in devices operating at very high frequencies, such as X band. They are obtained by sintering at lower temperatures than for known dielectrics suitable for those applications and correspond to two possible general formulae:Y.sub.3-x-z Ca.sub.x+z Zr.sub.x Fe.sub.5-x-y-z Al.sub.y Me.sub.z O.sub.12where:Me= Ge, Si or Ti;x is of the order of 20.ltoreq. y.ltoreq. 20.ltoreq. z.ltoreq. 1And (1+ Y)Li.sub. 2 O; 2xZnO; (2x+ 4y)TiO.sub.2 with: 1- 0.4x- 0.6y= 0.
    Type: Grant
    Filed: November 4, 1976
    Date of Patent: July 3, 1979
    Assignee: Thomson-CSF
    Inventors: Roland Sroussi, Jean Nicolas, Jacques Claudon
  • Polycrystalline ferrimagnetic garnet having a narrow gyromagnetic resonance line width and a low magnetic moment
    Patent number: 4125473
    Abstract: A garnet having a magnetic moment of less than 600 G and a resonance line width of less than 100 Oe for operation from 1 to 5 Gc/s. The garnet corresponds to the formula :Y.sub.3-x-y Ca.sub.x+y Fe.sub.5-x-y Ge.sub.x Zr.sub.y O.sub.12where x has a value of from 0.75 to 0.85 and y a value of from 0.05 to 0.35.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: November 14, 1978
    Assignee: Thomson-CSF
    Inventor: Roland Sroussi