10 Utility Patents
#145 in Abiko
#85,432 in Japan
#406,146 in the World
Forward Citations = 239
Company Filing History:

Hitachi Tokyo Electronics Co., Ltd.
Nippon Telephone and Telegraph Corporation
4. 2 out of 6
Hitachi Service Engineering Co., Ltd.
5. 1 out of 5,289

where one patent can have more than one assignee
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