22 Utility and 1 Design Patents
#6,396 in Tokyo
#31,893 in Japan
#147,832 in the World
rank by utility patentsForward Citations = 114
Company Filing History:



4. 2 out of 52
Nippon Steel & Sumikin Engineering Co., Ltd.
5. 1 out of 15,798

where one patent can have more than one assignee
Get your Inventor Badge Today