16 Utility Patents
#9,526 in Tokyo
#49,123 in Japan
#228,510 in the World
Forward Citations = 370
Company Filing History:

Tokyo R & D Co., Ltd.
Nippon Sanso Corporation
4. 2 out of 24
Japan Oxygen, Co., Ltd.
5. 1 out of 52,711

where one patent can have more than one assignee
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