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(11)

EP 0 522 140 A1

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(43) Date of publication: 13.01.1993 Bulletin 1993/02 (21) Application number: 92905614.0 (22) Date of filing: 24.01.1992

(51) International Patent Classification (IPC):  C25B 3/ 02( . ) C02F 1/ 467( . ) C25B 3/ 04( . ) A62D 101/ 45( . ) A62D 3/ 115( . ) C06B 25/ 00( . ) A62D 101/ 06( . ) C02F 1/ 461( . ) (86) International application number: PCT/US1992/000551 (87) International publication number: WO 1992/013117 (06.08.1992 Gazette 1992/21)

(84) Designated Contracting States: FR IT (30) Priority: 24.01.1991 US 19910645382 21.01.1992 US 19920821349 (71) Applicant: AEROJET-GENERAL CORPORATION Rancho Cordova, California 95741 (US)	(72) Inventors: CHIN, George Citrus Heights, CA 95621 (US) SMITH, Rex, M. Sacramento, CA 95816 (US) WONG, Michael, K. Sacramento, CA 95831 (US) WAGNER, Patrick, J. Citrus Heights, CA 95624 (US) (74) Representative: Reinhard - Skuhra - Weise & Partner  Postfach 44 01 51 D-80750 München D-80750 München (DE)