Database WPIL, accession no. 88-334727 [47], Derwent Publications Ltd. London; & Patent Abstracts of Japan, vol. 13, No. 56 (C-566), Feb. 8, 1989; & JP-A-63 248 491 (Mitsubishi Genshi Nuclear Fuel). |
Database WPIL, accession No. 89-217413 [30], Derwent Publications Ltd., London GB; & Patent Abstracts of Japan, vol. 13, No. 417 (C-636), Sep. 14, 1989; & JP-A-1 155 947 (Koji Sakaguchi). |
Database WPIL, accession No. 90-079317 [11], Derwent Publications Ltd., London, GB; & Patent Abstracts of Japan, vol. 14, No. 185 (P-1036), Apr. 13, 1990; & JP-A-2 032 299 (Mitsubishi Genshi Nuclear Fuel). |
Chemical Abstracts, vol. 109, No. 16, Oct. 17, 1988, p. 540, left-hand col., Abstract No. 137281f, Columbus, Ohio, US; & JP-A-63 61 988 (K. Sakaguchi) Mar. 18, 1988. |