Research/Patents/US 5593612
US 5593612Tier 3 — General Defense

U, W, X, Y AND Z-TYPE FERRITES

Assignee

US Government

Filed as: UNITED STATES OF AMERICA, THE, AS REPRESENTED BY THE SECRETARY OF THE NAVY

Filed

Nov 30, 1990

Granted

Jan 14, 1997

Location

GREAT FALLS VA US

Abstract

A U, W, X, Y, or Z-type hexagonal ferrite and method for making such a fete are disclosed. The hexagonal ferrite has a formula as follows: N.sub.Q Zn.sub.2-z Fe.sub.H-2x Ti.sub.X M.sub.X O.sub.E A.sub.Z According to the method, the required weights of the oxides and carbonates are measured and then pulverized and mixed to form a material which is sintered in air. This material is then cooled to produce the U, W, X, Y, or Z-type hexagonal ferrite.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Apr 23, 1992

Rescinded

May 19, 1995

Duration

3 years

Inventor

  • 1PETER LUBITZ
Back to patent indexSource: USPTO 35 USC §181 secrecy order records