42 Utility Patents
#2,443 in Tokyo
#10,950 in Japan
#52,576 in the World
Forward Citations = 459
Company Filing History:

Seikagaku Corporation

4. 4 out of 376
Tomy Kogyo Co., Ltd.
5. 4 out of 629
Dainippon Ink and Chemicals, Incorporated
where one patent can have more than one assignee
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