37 Utility Patents
#103 in Hitachi
#13,377 in Japan
#62,750 in the World
Forward Citations = 154
Company Filing History:


4. 3 out of 371

5. 3 out of 264

where one patent can have more than one assignee
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#103 in Hitachi
#13,377 in Japan
#62,750 in the World
Company Filing History:




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