(19)
(11) EP 1 504 193 A1

(12)

(43) Date of publication:
09.02.2005 Bulletin 2005/06

(21) Application number: 03719588.0

(22) Date of filing: 04.04.2003
(51) International Patent Classification (IPC)7F04F 9/08
(86) International application number:
PCT/US2003/010373
(87) International publication number:
WO 2003/093679 (13.11.2003 Gazette 2003/46)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 29.04.2002 US 134540

(71) Applicant: Varian, Inc.
Palo Alto, CA 94304 (US)

(72) Inventor:
  • HABLANIAN, Marsbed
    Wellesley, MA 02481 (US)

(74) Representative: Foster, Mark Charles et al
Mathisen & MacaraThe Coach House6-8 Swakeley's Road
Ickenham, Uxbridge Middlesex UB10 8BZ
Ickenham, Uxbridge Middlesex UB10 8BZ (GB)

   


(54) METHODS AND APPARATUS FOR CONTROLLING POWER IN VAPOR JET VACUUM PUMPS