6 Utility Patents
#239 in Funabashi
#139,312 in Japan
#693,896 in the World
Forward Citations = 594
Company Filing History:
Hitachi Keiyo Engineering Co., Ltd.

Other
4. 2 out of 87
Hitachi Ulsi Engineering Corp.
5. 1 out of 162
Hitachi Engineering Co., Ltd.
where one patent can have more than one assignee
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