EP620609-A1  PATENT ABSTRACTS OF JAPAN vol. 11, no. 95 (E-492) (2542) 25. M rz 1987 & JP-A-61 248 368 (MITSUBISHI ELECTRIC CORP) 5. November 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 95 (E-492) (2542) 25. Marz 1987 & JP-A-61 248 368 (MITSUBISHI ELECTRIC CORP);  PATENT ABSTRACTS OF JAPAN vol. 11, no. 95 (E-492) (2542) 25. M{rz 1987 & JP-A-61 248 368 (MITSUBISHI ELECTRIC CORP) 5. November 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 70 (E-485) (2517) 3. M rz 1987 & JP-A-61 225 779 (SHIN KOBE ELECTRIC MACH CO LTD) 7. Oktober 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 70 (E-485) (2517) 3. Marz 1987 & JP-A-61 225 779 (SHIN KOBE ELECTRIC MACH CO LTD);  PATENT ABSTRACTS OF JAPAN vol. 11, no. 70 (E-485) (2517) 3. M{rz 1987 & JP-A-61 225 779 (SHIN KOBE ELECTRIC MACH CO LTD) 7. Oktober 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 73 (E-486) (2520) 5. M rz 1987 & JP-A-61 230 273 (SANYO ELECTRIC CO LTD) 14. Oktober 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 73 (E-486) (2520) 5. Marz 1987 & JP-A-61 230 273 (SANYO ELECTRIC CO LTD);  PATENT ABSTRACTS OF JAPAN vol. 11, no. 73 (E-486) (2520) 5. M{rz 1987 & JP-A-61 230 273 (SANYO ELECTRIC CO LTD) 14. Oktober 1986;  SAE JOURNAL, Bd.70, Nr.1, Januar 1962 Seiten 82 - 86 R. H. BLACKMER ET AL 'Ion-exchange membrane';  SAE JOURNAL, Bd.70, Nr.1, Januar 1962 Seiten 82 - 86 R. H. BLACKMER ET AL "Ion-exchange membrane";  PATENT ABSTRACTS OF JAPAN vol. 11, no. 70 (E-485) (2517) 3. Maerz 1987 & JP-A-61 225 779 (SHIN KOBE ELECTRIC MACH CO LTD) 7. Oktober 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 73 (E-486) (2520) 5. Maerz 1987 & JP-A-61 230 273 (SANYO ELECTRIC CO LTD) 14. Oktober 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 95 (E-492) (2542) 25. Maerz 1987 & JP-A-61 248 368 (MITSUBISHI ELECTRIC CORP) 5. November 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 70 (E-485) (2517) 3. Maerz 1987&JP-A-61 225 779 (SHIN KOBE ELECTRIC MACH CO LTD) 7. Oktober 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 73 (E-486) (2520) 5. Maerz 1987&JP-A-61 230 273 (SANYO ELECTRIC CO LTD) 14. Oktober 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 95 (E-492) (2542) 25. Maerz 1987&JP-A-61 248 368 (MITSUBISHI ELECTRIC CORP) 5. November 1986EP620609-B1  PATENT ABSTRACTS OF JAPAN vol. 11, no. 70 (E-485) (2517) 3. Maerz 1987 and JP-A-61 225 779 (SHIN KOBE ELECTRIC MACH CO LTD) 7. Oktober 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 73 (E-486) (2520) 5. Maerz 1987 and JP-A-61 230 273 (SANYO ELECTRIC CO LTD) 14. Oktober 1986;  PATENT ABSTRACTS OF JAPAN vol. 11, no. 95 (E-492) (2542) 25. Maerz 1987 and JP-A-61 248 368 (MITSUBISHI ELECTRIC CORP) 5. November 1986;  SAE JOURNAL, Bd.70, Nr.1, Januar 1962 Seiten 82 - 86 R. H. BLACKMER ET AL 'Ion-exchange membrane'