WO9012177-A  See also references of EPA 0417303;  See also references of EP 0417303A1EP417303-A  PATENT ABSTRACTS OF JAPAN vol. 4, no. 33 (M-003) 21 March 1980 & JP 55 006110 A (HIRAI GIKEN K.K.) 17 January 1980;  PATENT ABSTRACTS OF JAPAN vol. 5, no. 127 (M-083) 15 August 1981 & JP 56 064251 A (HIRAI GIKEN K.K.) 01 June 1981;  PATENT ABSTRACTS OF JAPAN vol. 5, no. 158 (M-091) 12 October 1981 & JP 56 085648 A (HIRAI GIKEN K.K.) 11 July 1981;  PATENT ABSTRACTS OF JAPAN vol. 6, no. 253 (M-178) 11 December 1982 & JP 57 147142 A (HIRAI GIKEN K.K.) 13 September 1982;  PATENT ABSTRACTS OF JAPAN, vol. 4, no. 33 (M-003), 21st March 1980; & JP-A-55 006 110 (HIRAI GIKEN K.K.) 17-01-1980;  PATENT ABSTRACTS OF JAPAN, vol. 5, no. 127 (M-083), 15th August 1981; & JP-A-56 064 251 (HIRAI GIKEN K.K.) 01-06-1981;  PATENT ABSTRACTS OF JAPAN vol. 14, no. 46 (M-926) 26 January 1990 & JP 01 275847 A (FUJISASH CO.) 06 November 1989;  PATENT ABSTRACTS OF JAPAN vol. 14, no. 172 (M-095) 04 April 1990 & JP 02 024444 A (FUJISASH CO.) 26 January 1990;  PATENT ABSTRACTS OF JAPAN vol. 4, no. 33 (M-3)21 March 1980;  See also references of WO 9012177A1;  PATENT ABSTRACTS OF JAPAN vol. 14, no. 172 (M-095) 04 April 1990&JP 02 024444 A (FUJISASH CO.) 26 January 1990;  PATENT ABSTRACTS OF JAPAN vol. 5, no. 158 (M-091) 12 October 1981&JP 56 085648 A (HIRAI GIKEN K.K.) 11 July 1981;  PATENT ABSTRACTS OF JAPAN vol. 6, no. 253 (M-178) 11 December 1982&JP 57 147142 A (HIRAI GIKEN K.K.) 13 September 1982;  PATENT ABSTRACTS OF JAPAN vol. 5, no. 127 (M-083) 15 August 1981&JP 56 064251 A (HIRAI GIKEN K.K.) 01 June 1981;  PATENT ABSTRACTS OF JAPAN vol. 4, no. 33 (M-003) 21 March 1980&JP 55 006110 A (HIRAI GIKEN K.K.) 17 January 1980;  PATENT ABSTRACTS OF JAPAN vol. 14, no. 46 (M-926) 26 January 1990&JP 01 275847 A (FUJISASH CO.) 06 November 1989AU635246-B  AU 34174/78 E04D 3/18;  AU 34583/78 E04D 11/00 3/18EP626486-A1  JP-A-57 148 142 (HIRAI GIKEN KK) & PATENT ABSTRACTS OF JAPAN vol. 6, no. 253 (M-178);  PATENT ABSTRACTS OF JAPAN vol. 5, no. 158 (M-91) 12 October 1981 & JP-A-56 085 648 (HIRAI GIKEN KK);  PATENT ABSTRACTS OF JAPAN vol. 5, no. 158 (M-91) 12 October 1981 & JP-A-56 085 648 (HIRAI GIKEN KK) 11 July 1981;  PATENT ABSTRACTS OF JAPAN vol. 5, no. 158 (M-91) 12 October 1981&JP-A-56 085 648 (HIRAI GIKEN KK) 11 July 1981EP417303-A4  JP56 085 648 (HIRAI GIKEN K.K.) (11071981) & PATENT ABSTRACTS OF JAPAN, vol. 5, no. 158 (M-091), 12101981;  JP57 148 142 (HIRAI GIKEN K.K.)(13091982) & PATENT ABSTRACTS OF JAPAN, vol. 6, no. 253 (M-178), 11121982;  PATENT ABSTRACTS OF JAPAN, vol. 4, no. 33 (M-003), 21031980; & JP55006110 (HIRAI GIKEN K.K.) 17011980;  PATENT ABSTRACTS OF JAPAN, vol. 5, no. 127 (M-083), 15081981; & JP56 064 251 (HIRAI GIKEN K.K.) 01061981;  JP01275847 (FUJISASH CO.) & PATENT ABSTRACTS OF JAPAN, vol. 14, no. 46 (M-926) 26011990;  JP02024444 (FUJISASH CO.) (260190) & PATENT ABSTRACTS OF JAPAN, vol. 14, no. 172 (M-095), 04041990EP417303-B1  PATENT ABSTRACTS OF JAPAN, vol. 4, no. 33 (M-003), 21/03/1980;& JP-A-55 006 110 (HIRAI GIKEN K.K.) 17/01/1980;  PATENT ABSTRACTS OF JAPAN, vol. 5, no. 127 (M-083), 15/08/1981;& JP-A-56 064 251 (HIRAI GIKEN K.K.) 01/06/1981