16 Utility and 2 Design Patents
#9,509 in Tokyo
#49,065 in Japan
#227,887 in the World
rank by utility patentsForward Citations = 145
Company Filing History:

Yamada Iryo Shomei Kabushiki Kaisha

4. 2 out of 47
Metawater Co., Ltd.
5. 2 out of 21,351

where one patent can have more than one assignee
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