9 Utility Patents
#17,794 in Tokyo
#95,363 in Japan
#456,432 in the World
Forward Citations = 33
Company Filing History:

Marubun Corporation

4. 8 out of 746
Toshiba Kikai Kabushiki Kaisha
5. 7 out of 1,221
Tokyo Ohka Kogyo Co., Ltd.
where one patent can have more than one assignee
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