14 Utility Patents
#11,185 in Tokyo
#58,089 in Japan
#270,322 in the World
Forward Citations = 244
Company Filing History:
Sumitomo Chemical Company, Limited
Hitachi Chemical Company, Ltd.
Research Development Corporation of Japan
4. 2 out of 109

5. 2 out of 25
Nippon Oil Seal Industry Co., Ltd.
where one patent can have more than one assignee
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