(19)
(11) EP 1 828 736 A1

(12)

(43) Date of publication:
05.09.2007 Bulletin 2007/36

(21) Application number: 05740839.5

(22) Date of filing: 03.05.2005
(51) International Patent Classification (IPC): 
G01L 11/04(2006.01)
(86) International application number:
PCT/KR2005/001280
(87) International publication number:
WO 2006/059822 (08.06.2006 Gazette 2006/23)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

(30) Priority: 04.12.2004 KR 20040101500

(71) Applicant: Mdt Co., Ltd.
Gyeonnggi-do 467-854 (KR)

(72) Inventors:
  • KIM, Wang Sup 105-1402 Sinil Apt., 319 Yuljeon-do
    Gyeonggi-do 440-320 (KR)
  • CHOI, Bum Kyoo
    Hwagok-dong, Gangseo-gu Seoul 157-010 (KR)
  • OH, Jae Geun
    Gyeonggi-do 462-110 (KR)

(74) Representative: MacDougall, Alan John Shaw et al
Mathys & Squire 120 Holborn
London EC1N 2SQ
London EC1N 2SQ (GB)

   


(54) POWER-FREE/WIRELESS SENSOR BASED ON SURFACE ACOUSTIC WAVE WITH ENERGY COLLECTING TYPE