1955 -- Tokyo factory ( formerly Kamata factory ) was separated .
Nippon Rika Kogyo Co. , Ltd. , changed factory 's 's name to Nippon factory 's factory 's its trade name .
1955 -- Tokyo factory ( formerly Kamata factory ) was separated , and Nippon Rika Kogyo Co. , Ltd. , changed its name to Nippon Sanso Corporation its trade name .