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(11)

EP 0 598 122 A1

(12)

(43) Date of publication: 25.05.1994 Bulletin 1994/21 (21) Application number: 92913259.0 (22) Date of filing: 22.06.1992

(51) International Patent Classification (IPC):  A01N 25/ 00( . ) A01N 33/ 06( . ) A01N 33/ 04( . ) (86) International application number: PCT/JP1992/000795 (87) International publication number: WO 1993/002554 (18.02.1993 Gazette 1993/05)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 09.08.1991 JP 19910200822 (71) Applicant: TAISHO PHARMACEUTICAL CO. LTD Tokyo 171 (JP)

(72) Inventors: OGINO, Kazumasa, 2-2-304, Haraichi-danchi Saitama 362 (JP) SHIMAMURA, Haruo, 1-5-15, Sakuragaoka Saitama 338 (JP) TOMISAWA, Kazuyuki, 4-191-3, Sakae Ina-machi Saitama 362 (JP) URUSHIZAKI, Fumio, A1110, Sofia-ageo 2-1-1, Yatsu Saitama 362 (JP) NEMOTO, Masami, 1214-75, Sakata Saitama 363 (JP) (74) Representative: Kraus, Walter, Dr., et al  Patentanwälte Kraus, Weisert & Partner Thomas-Wimmer-Ring 15 D-80539 München D-80539 München (DE)