(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