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对已收集的日本１９９６年度硅钢专利２１５项分３部分即取向硅钢、无取向硅钢及高Ｓｉ材专利技术逐一作了简介。透视了日本硅钢研究开发状况，列出了截止１９９７年４月的产销、以及各主要钢铁公司的专利分布情况。
215 patents on Japan’s silicon steel have been collected in Japan in three parts that is oriented silicon steel, non-oriented silicon steel and high-Si patented technology one by one were introduced. Looking through the research and development status of Japanese silicon steel, it lists the production and sales as of April 1997 and the patent distribution of major steel companies.