24 Utility Patents
#143 in Nagaokakyo
#27,957 in Japan
#129,648 in the World
Forward Citations = 509
Company Filing History:
Sumitomo Chemical Company, Limited
Sumitomo Metal Industries, Inc.

4. 1 out of 6
Research Institute for Production Development
5. 1 out of 30

where one patent can have more than one assignee
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