(19)

(11)

EP 0 095 490 A1

(12)

(43) Date of publication: 07.12.1983 Bulletin 1983/49 (21) Application number: 83900157.0 (22) Date of filing: 30.11.1982

(51) International Patent Classification (IPC):  B28B 1/ 52( . ) C03C 13/ 00( . ) (86) International application number: PCT/US1982/001670 (87) International publication number: WO 1983/001947 (09.06.1983 Gazette 1983/14)

(84) Designated Contracting States: BE DE FR GB NL SE (30) Priority: 04.12.1981 US 19810327538 (71) Applicant: THE UNITED STATES OF AMERICA represented by the Secretary U.S. Department of Commerce Springfield, Virginia 22161 (US)	(72) Inventors: MACKENZIE, John D. Los Angeles, CA 90049 (US) HORIUCHI, Tetsuro Los Angeles, CA 90066 (US) (74) Representative: De Minvielle-Devaux, Ian Benedict Peter, et al  CARPMAELS & RANSFORD 43, Bloomsbury Square London WC1A 2RA London WC1A 2RA (GB)