(19)
(11) EP 1 181 156 A1

(12)

(43) Date of publication:
27.02.2002 Bulletin 2002/09

(21) Application number: 00929924.9

(22) Date of filing: 04.05.2000
(51) International Patent Classification (IPC)7B43L 21/00
(86) International application number:
PCT/KR0000/424
(87) International publication number:
WO 0068/025 (16.11.2000 Gazette 2000/46)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 07.05.1999 JP 12738999

(71) Applicant: Jang, Chang-Ho
Kangnam-gu, Seoul 135-280 (KR)

(72) Inventor:
  • Jang, Chang-Ho
    Kangnam-gu, Seoul 135-280 (KR)

(74) Representative: KOHLER SCHMID + PARTNER 
Patentanwälte Ruppmannstrasse 27
70565 Stuttgart
70565 Stuttgart (DE)

   


(54) AN APPARATUS AND A METHOD FOR AUTOMATICALLY ERASING A BLACKBOARD