Patent Abstracts of Japan, vol. 003, No. 075, (C-050) 27 Jun. 1979, & JP-A-54 052 176 (Mitsuibishi Petroleum Co. Ltd.) 24 Apr. 1979. |
Database WPI-Derwent Publications Ltd., London, GB; AN 80-85431C[48] & JP-A-55 133 959 (Honshu Paper Mfg. KK.) 19 Oct. 1980. |
Patent Abstracts of Japan, vol. 008, No. 085, (C-219) 18 Apr. 1984, & JP-A-59 004 627 (Nihon Ita Glass KK.) 11 Jan. 1984. |
Patent Abstracts of Japan, vol. 010, No. 350, (C-387) 26 Nov. 1986 & JP-A-61 151 244 (Isuzu Motors Ltd.) 9 Jul. 1986. |
Derwent Publications Ltd., London, GB; AN 91-337160[46] & JP-A-3 227 619 (Toppan Printing KK.) 8 Oct. 1991. |