3 Utility Patents
#174 in Kumagaya
#237,166 in Japan
Forward Citations = 18
Company Filing History:

Kabushiki Kaisha
Chichibu Cement Kabushiki Kaisha
4. 1 out of 4
Tokushu Shunsetsu Kabushiki Kaisha
5. 1 out of 3
Ishikawajima-harima Jukogyo Kaisha
where one patent can have more than one assignee
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