A survey of 346 U.S. firms that were the top patent holders in selected sectors. Examines patent protection for U.S. products in Japan as compared with that in the U.S. & Europe. Also examines U.S. companies' views on whether harmonization would improve their patent experience in Japan, & progress in working toward greater international patent harmonization. Charts & tables. Survey instrument included, in addition to detailed responses. Charts & graphs.Intellectual Property Rights U. S. Companies' Patent Experiences in Japan, with ISBN 9780788101038 and ISBN 078810103X.