(19)
(11) EP 0 480 996 A1

(12)

(43) Date of publication:
22.04.1992 Bulletin 1992/17

(21) Application number: 90910994.0

(22) Date of filing: 22.06.1990
(51) International Patent Classification (IPC): 
A61K 31/ 47( . )
A61K 47/ 14( . )
A61K 47/ 20( . )
A61K 47/ 12( . )
A61K 47/ 18( . )
A61K 47/ 22( . )
(86) International application number:
PCT/US1990/003571
(87) International publication number:
WO 1991/000728 (24.01.1991 Gazette 1991/03)
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB IT LI LU NL SE

(30) Priority: 07.07.1989 US 19890377184

(71) Applicant: ATRIX LABORATORIES, INC.
Fort Collins, CO 80525 (US)

(72) Inventors:
  • GODOWSKI, Kenneth, C.
    Fort Collins, CO 80526 (US)
  • WOLFF, Elyse, D.
    Fort Collins, CO 80521 (US)
  • HARKARADER, Ronald, J.
    Louisville, CO 80027 (US)
  • DUNN, Richard, L.
    Fort Collins, CO 80525 (US)

(74) Representative: Hoffmeister, Helmut, Dr. Dipl.-Phys. 
Patentanwalt, Postbox 38 28
48021 Münster
48021 Münster (DE)

   


(54) BENZOPHENANTHRIDINE ALKALOIDS FOR TOPICAL ACNE TREATMENT