(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