(19)
(11) EP 0 946 701 A1

(12)

(43) Date of publication:
06.10.1999 Bulletin 1999/40

(21) Application number: 96941351.0

(22) Date of filing: 15.11.1996
(51) International Patent Classification (IPC): 
B08B 9/ 08( . )
C11D 1/ 24( . )
C11D 3/ 02( . )
C11D 3/ 20( . )
C11D 3/ 36( . )
C11D 17/ 08( . )
 B08B 3/ 08( . )
C11D 1/ 66( . )
C11D 3/ 04( . )
C11D 3/ 34( . )
C11D 11/ 00( . )
(86) International application number:
PCT/US1996/018261
(87) International publication number:
WO 1998/022566 (28.05.1998 Gazette 1998/21)
(84) Designated Contracting States:
DE FR GB IT NL

(71) Applicant: ECOLAB INC.
St. Paul Minnesota 55102 (US)

(72) Inventors:
  • CORDS, Bruce, R.
    Eagan, MN 55123 (US)
  • WICHMANN, Gerald, K.
    Maple Grove, MN 55369 (US)
  • WEI, Guang-jong, Jason
    Mendota Heights, MN 55120 (US)
  • McSHERRY, David, D.
    Minneapolis, MN 55414 (US)
  • HERDT, Brendon, L.
    Farmington, MN 55024 (US)
  • VALENCIA, Arturo
    de jaurez, Edo de Mexico, 53240 (MX)

(74) Representative: Rambelli, Paolo, et al 
c/o JACOBACCI & PERANI S.p.A. Corso Regio Parco, 27
10152 Torino
10152 Torino (IT)

   


(54) CLEANING METHOD FOR POLYETHYLENE TEREPHTALATE CONTAINERS