(19)

(11)

EP 1 051 633 A1

(12)

(43) Date of publication: 15.11.2000 Bulletin 2000/46 (21) Application number: 99903329.3 (22) Date of filing: 22.01.1999

(51) International Patent Classification (IPC)7: G01R 31/11 (86) International application number: PCT/US9901/432 (87) International publication number: WO 9938/023 (29.07.1999 Gazette 1999/30)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 23.01.1998 US 72409 P (71) Applicant: Trilithic, Inc. Indianapolis, IN 46236 (US)	(72) Inventor: RITTMAN, Daniel, E. Fishers, IN 46038 (US) (74) Representative: Croston, David et al Withers & Rogers,Goldings House,2 Hays Lane London SE1 2HW London SE1 2HW (GB)