Home › Authors › Kawaguchi, Hiroya 👤 Kawaguchi, Hiroya b. 1933 · 3 books Books by Kawaguchi, Hiroya The Essentials of Japanese Patent Law 2006 Gaisetsu tokkyohō chiteki zais Gaisetsu tokkyohō chiteki zaisanken jōyaku 2004 Tokkyohō no kōzō to kadai Tokkyohō no kōzō to kadai 1983