(19)
(11) EP 0 755 469 A1

(12)

(43) Date of publication:
29.01.1997 Bulletin 1997/05

(21) Application number: 95916891.0

(22) Date of filing: 12.04.1995
(51) International Patent Classification (IPC): 
B01J 19/ 10( . )
D21F 1/ 02( . )
D21H 23/ 00( . )
D21F 1/ 00( . )
D21F 1/ 32( . )
(86) International application number:
PCT/SE1995/000398
(87) International publication number:
WO 1995/028521 (26.10.1995 Gazette 1995/46)
(84) Designated Contracting States:
AT DE ES FR GB IT NL SE

(30) Priority: 14.04.1994 SE 19940001272

(71) Applicant: NILSSON, Bo
S-740 71 Öregrund (SE)

(72) Inventor:
  • NILSSON, Bo
    S-740 71 Öregrund (SE)

(74) Representative: Bjellman, Lennart Olov Henrik, et al 
DR. LUDWIG BRANN PATENTBYRA AB, Box 1344, Drottninggatan 7
751 43 Uppsala
751 43 Uppsala (SE)

   


(54) USE OF ULTRASONICS IN CONNECTION WITH PAPER MAKING