(19)

(11)

EP 0 112 344 A1

(12)

(43) Date of publication: 04.07.1984 Bulletin 1984/27 (21) Application number: 83901831.0 (22) Date of filing: 13.06.1983

(51) International Patent Classification (IPC):  A61K 9/ 127( . ) G03C 5/ 30( . ) C11D 1/ 52( . ) G03C 5/ 305( . ) (86) International application number: PCT/GB1983/000155 (87) International publication number: WO 1983/004412 (22.12.1983 Gazette 1983/29)

(84) Designated Contracting States: DE FR GB NL (30) Priority: 11.06.1982 GB 19820017078 (71) Applicant: NATIONAL RESEARCH DEVELOPMENT CORPORATION London SE1 6BU (GB)	(72) Inventor: HILDRETH, James Earl King Baltimore, MD 21205 (US)