(19)

(11)

EP 0 988 144 A1

(12)

(43) Date of publication: 29.03.2000 Bulletin 2000/13 (21) Application number: 98937933.4 (22) Date of filing: 19.05.1998

(51) International Patent Classification (IPC)7: B32B 5/22, B32B 5/24, B32B 5/26, B32B 5/28, B32B 18/00, B32B 27/04, B32B 27/06, B32B 27/08, B32B 27/28, B32B 31/24, B32B 31/26, C09K 21/06, C09K 21/14 (86) International application number: PCT/US9810/211 (87) International publication number: WO 9856/574 (17.12.1998 Gazette 1998/50)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 12.06.1997 US 873570 (71) Applicant: NORTHROP GRUMMAN CORPORATION Los AngelesCalifornia 90067-2199 (US)	(72) Inventors: SORENSON, Eric, T. Long Beach, CA 90808 (US) HAHN, Michael, T. Torrance, CA 90505 (US) DAWS, David, E. Los Alamitos, CA 90720 (US) (74) Representative: Maury, Richard Philip et al Sommerville & Rushton,45 Grosvenor Road St. Albans, Herts AL1 3AW St. Albans, Herts AL1 3AW (GB)