13 Utility Patents
#3,321 in Osaka
#63,450 in Japan
#297,024 in the World
Forward Citations = 86
Company Filing History:
Hisaka Works, Ltd.
Sumitomo Mitsubishi Silicon Corporation
Kashiwara Machine Mfg. Co., Ltd.
4. 1 out of 595
Sumco Corporation
where one patent can have more than one assignee
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