70 Utility and 2 Design Patents
#316 in Yokohama
#3,813 in Japan
#20,374 in the World
rank by utility patentsForward Citations = 1,483
Company Filing History:


Nippon Telegraph and Telephone Public Corporation
4. 2 out of 62

5. 1 out of 832,843 patents
Other
where one patent can have more than one assignee
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