30 Utility Patents
#123 in Sagamihara
#19,794 in Japan
#92,585 in the World
Forward Citations = 436
Company Filing History:


Bunka Shutter Co., Ltd.
4. 2 out of 12
Japan Marine Science and Technology Center
5. 2 out of 4,979
Oki Electric Industry Co., Ltd.
where one patent can have more than one assignee
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