(19)
(11) EP 0 870 254 A1

(12)

(43) Date of publication:
14.10.1998 Bulletin 1998/42

(21) Application number: 96921596.0

(22) Date of filing: 12.06.1996
(51) International Patent Classification (IPC): 
H01L 21/ 82( . )
G06F 17/ 50( . )
(86) International application number:
PCT/US1996/010275
(87) International publication number:
WO 1996/042060 (27.12.1996 Gazette 1997/04)
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 12.06.1995 US 19950000159P

(71) Applicant: Cascade Design Automation Corporation
Bellevue, Washington 98006 (US)

(72) Inventors:
  • BUCHANAN, Marc, E.
    Graham, WA 98338 (US)
  • LIPPINCOTT, George, P.
    Kirkland, WA 98034 (US)

(74) Representative: Baillie, Iain Cameron, et al 
c/o Ladas & Parry 52-54 High Holborn
London WC1V 6RR
London WC1V 6RR (GB)

   


(54) METHOD AND APPARATUS FOR POINT LANDMARK DESIGN OF INTEGRATED CIRCUITS