5 Utility and 3 Design Patents
#29,025 in Tokyo
#162,610 in Japan
#827,581 in the World
rank by utility patentsForward Citations = 37
Company Filing History:
Sumitomo Forestry Co., Ltd.
Kanai Co., Ltd.

4. 1 out of 4,979
Oki Electric Industry Co., Ltd.
where one patent can have more than one assignee
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