21 Utility Patents
#6,827 in Tokyo
#34,126 in Japan
#157,806 in the World
Forward Citations = 61
Company Filing History:

The University of Electro-communications
Kumiai Chemical Industry Co., Ltd.
4. 3 out of 6,883
Sumitomo Chemical Company, Limited
5. 1 out of 5,289

where one patent can have more than one assignee
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