20 Utility Patents
#6,993 in Tokyo
#35,815 in Japan
#164,346 in the World
Forward Citations = 223
Company Filing History:
Denka Seiken Co., Ltd.

The Director General of the National Institute of Health of Japan
4. 4 out of 4
Japan As Represented by Director-general National Institute of Infectious Diseases
5. 3 out of 830,757 patents
Other
where one patent can have more than one assignee
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