7 Utility and 5 Design Patents
#22,225 in Tokyo
#121,533 in Japan
#596,497 in the World
rank by utility patentsForward Citations = 8
Company Filing History:

Nhk Technologies, Inc.

4. 2 out of 4,608

5. 1 out of 7
Nippon Welding Rod Co., Ltd.
where one patent can have more than one assignee
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