10 Utility and 1 Design Patents
#16,094 in Tokyo
#85,524 in Japan
#406,844 in the World
rank by utility patentsForward Citations = 14
Company Filing History:


Hitachi Industrial Equipment Systems Co., Ltd.
4. 2 out of 223
Toyo Ink Manufacturing Company
5. 1 out of 5
Nippon Otis Elevator Company
where one patent can have more than one assignee
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