37 Utility Patents
#1,039 in Yokohama
#13,738 in Japan
#65,028 in the World
Forward Citations = 1,373
Company Filing History:

Hitachi Keiyo Engineering Co., Ltd.
Other
4. 2 out of 13
Hitachi Chubu Software, Ltd.
5. 2 out of 87
Hitachi Ulsi Engineering Corp.
where one patent can have more than one assignee
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