43 Utility Patents
#813 in Yokohama
#10,460 in Japan
#50,399 in the World
Forward Citations = 283
Company Filing History:

Mitsui Chemicals, Inc.
Yamamoto Chemicals, Inc.
4. 2 out of 621
Mitsubishi Paper Mills Limited
5. 2 out of 39,209

where one patent can have more than one assignee
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