Research/Patents/US 5506054
US 5506054Tier 3 — General Defense

ULTRA HIGH FREQUENCY ABSORBING MATERIAL CAPABLE OF RESISTING A HIGH TEMPERATURE ENVIRONMENT AND METHOD FOR FABRICATING IT

Assignee

US Government

Filed as: UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE

Filed

Jan 13, 1982

Granted

Apr 9, 1996

Location

COLUMBUS OH US

Abstract

This invention involves a method of providing suitable electrical isolation for small metal particles (such as iron) from each other, agglomerating these particles into a larger size, and overcoating the agglomerates to provide environmental protection. A product of this type has attractive electromagnetic absorbing properties at ultra high frequencies even when used in a high temperature environment that would have oxidized uncoated iron particles with resultant deterioration of its absorbing properties.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Feb 7, 1983

Rescinded

Feb 22, 1994

Duration

11 years

Inventor

  • 1MELVIN F. BROWNING

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records