Research/Patents/US 5173367
US 5173367

CERAMIC COMPOSITES

Assignee

ETHYL CORPORATION

Filed

Jan 15, 1991

Granted

Dec 22, 1992

Location

BATON ROUGE LA US

Abstract

Fiber-reinforced ceramic composites are obtained by the use of a prepreg comprising sized carbon fibers bonded together with a matrix composition which comprises about 25-60% by weight of a polysilazane and about 75-40% by weight of at least two ceramic powders selected from silicon metal, silicon carbide and silicon boride powders.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

May 31, 1991

Rescinded

May 27, 1992

Duration

12 months

Inventor

  • 1ERIC W. LIIMATTA
Back to patent indexSource: USPTO 35 USC §181 secrecy order records