8 Utility Patents
#19,791 in Tokyo
#107,131 in Japan
#518,894 in the World
Forward Citations = 32
Company Filing History:

Marubun Corporation

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