213 Utility and 4 Design Patents
#14 in Yokohama
#190 in Japan
#1,881 in the World
rank by utility patentsForward Citations = 3,239
Company Filing History:


Nhk Spring Co., Ltd.
4. 4 out of 5,119

5. 3 out of 832,812 patents
Other
where one patent can have more than one assignee
Get your Inventor Badge Today