US 6,982,285 B2
Control of parasites attached to skin of fish
Hariolf Schmid, Heitersheim (Germany)
Assigned to Novartis Animal Health US, Inc., Greensboro, N.C. (US)
Filed on Jan. 22, 2003, as Appl. No. 10/348,717.
Application 10/348717 is a division of application No. 09/718120, filed on Nov. 20, 2000, granted, now 6,538,031.
Claims priority of application No. 998 11 084 (DE), filed on Nov. 25, 1999.
Prior Publication US 2003/0158260 A1, Aug. 21, 2003
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 31/17 (2006.01)
U.S. Cl. 514—595 6 Claims
 
1. A process for the preparation of a composition for controlling fish parasites, comprising 0.1 to 99% by weight of a compound of formula (I)
OG Complex Work Unit Drawing
or of one of its physiologically tolerable acid addition salts, wherein X is halogen; X1 is hydrogen or halogen X2, is hydrogen or halogen; —O—Y is in position 3, and Y represents the group
OG Complex Work Unit Drawing
Y1 is hydrogen or halogen; Y2 is hydrogen or halogen; Y3 is hydrogen or halogen; Z1 is hydrogen or C1-C3-alkyl; Z2 is hydrogen or C1-C3-alkyl and U is hydrogen or halogen; and 99.9 to 1% by weight of an excipient that is physiologically tolerated by fish.